The in-depth implementation of the Development Strategy of the Yangtze River Economic Belt cannot be separated from the coordinated development and common progress of scientific and technological innovation and green development. Based on the perspective of urban agglomeration, taken 85 cities in the three major urban agglomerations of the Yangtze River Economic Belt from 2010 to 2019 as the research object, employed the entropy weight method, the super-efficiency SBM model, the coupling coordination degree model and the Tobit model, discussed the coupling coordination relationship and spatial-temporal evolution characteristics between scientific and technological innovation and ecological efficiency, and analyzed the key impact factors of coupling coordination degree. The results showed that: (1) From 2010 to 2019, the overall scientific and technological innovation level of the Yangtze River Economic Belt presented a steady rising trend, while the variation trend of the ecological efficiency level exhibited a W-shaped with a “descending - ascending - descending - ascending” feature. The coupling coordination degree of scientific and technological innovation and ecological efficiency showed a fluctuating upward trend with an inverted U-shaped pattern. The spatial heterogeneity between the three major urban agglomerations were significant, which exhibited that the Yangtze River Delta urban agglomeration > the middle reaches of the Yangtze River urban agglomeration > the Chengdu-Chongqing urban agglomeration. (2) There was a significant spatial autocorrelation feature between the overall coupling and coordinated development level, and most cities showed low and low agglomeration. The Yangtze River Delta urban agglomeration showed a significant “high in the east and low in the west” spatial agglomeration , while the middle reaches of the Yangtze River urban agglomeration and Chengdu-Chongqing urban agglomeration had no significant spatial agglomeration characteristics.(3) The level of economic development , the agglomeration of the labor force , the opening-up degree and the industrial structure had a significant positive impact on the overall coupling coordination level of the Yangtze River Economic Belt. Based on the above conclusions, this study puts forward suggestions for strengthening the ecological environment protection of the Yangtze River Economic Belt, emphasizing the heterogeneity of regional development, introducing and cultivating innovative talents, and actively carrying out open exchanges with the outside world.

The purpose of this paper was to probe into spatio-temporal evolution characteristics and influencing factors of production-living-ecological functions(PLEFs) of urban space to improve urban high-quality development. A coupled coordination degree model, spatial analysis method and geographic detection model were employed. The study area was the Yangtze River Economic Belt. The results showed that: (1) On the whole, the coupling and coordination level of urban space PLEFs showed a trend of “inverted U”,implying agradual development in to fluctuations and stability; (2) There was obvious spatial differentiation in the coupling and coordination level of the PLEFs, showing a pattern of “high in the east and low in the west”, and the areas with high coupling and coordination levels were mainly concentrated in the Yangtze River Delta, the middle reaches of the Yangtze River and the Chengdu-Chongqing urban agglomeration, with a gradient of decreasing towards the surrounding areas centered atprovincial capitals; (3) The dominant factors affecting the coupling and coordinated development of PLEFs were the level of economic development, urbanization and environmental governance.This study suggested that the advantages of the “polarization effect” of central cities and their spatial spillover effects be given full attention to promote the coupling and coordinated development. The results can provid a basis for urban space optimization and regional high-quality coordinated development.

Scientific diagnosis of the multi-dimensional adaptation relationship between new-type urbanization and ecological resilience is a key part of promoting high-quality regional development and the construction of ecological civilization. Taking the urban agglomeration in the Middle Reaches of the Yangtze River as the study area, a new-type urbanization and ecological resilience assessment system was constructed, based on the conceptof evolutionary resilience.The spatiotemporal adaptation characteristics of the two were outlined from three aspectsof time, space and spatiotemporal interaction. The interaction relationship between the two systems was identified with the help of panel vector autoregressive model. The results showed that: ① From 2005 to 2020, the new-type urbanization and ecological resilience adaptation index changed from extremely unsuitable (0.397) in 2005 to moderate adaptation (0.736) in 2020, with an average annual growth rate of 3.926%. The cities of Wuhan, Changsha, Nanchang and other central oneswere identified as high-value areas, and the unbalanced characteristics of coordinated adaptation within urban agglomerations were significant. ② The spatial correlation pattern of new urbanization and ecological resilience adaptation level showed a certain shift inertness, with strong path dependence and spatial locking characteristics, and the intensity of intercity spatial cooperation was higher than that of spatial competition. ③ In the short term, the relationship between new-type urbanization and ecological resilience was significant.The promotion of ecological resilience by new-type urbanization was stronger than the promotion of ecological resilience on new-type urbanization. The inertia of self-development of each system was stronger in a longer period of time.

Based on the idea of ‘protectors benefit and polluters pay’ and the mechanism of rewards and punishment compensation, the policy of ecological compensation for air quality improvement aims to guide urban emission entities. Sofar, the research on the impact of air ecological compensation policy on green innovation is still at the infancystage. In view of the hysteresis, complexity and heterogeneity of the influencing mechanism, this paper selected 284 prefecture-level cities in Chinaas samples, and conducted empirical studies usingthe methods of Quantile Regression, mediating effect and moderating effect models, for the periodof 2006 to 2020. The results showed that: Firstly, the elasticity of green innovation efficiency on air ecological compensation policies was significantly positive. This positive effect would enhance with the increase of green innovation efficiency. Besides, most of the controlled variables (except for industrial structure and education level), including foreign direct investment, government expenditure, economic growth and moderate environmental regulations, promoted green innovation to certainextents. Secondly, regional competition played a partial mediating role in promoting green innovation by ecological compensation policies, while the growth of urban scale in cities with higher levels of aging actually suppressed the driving effect of ecological compensation on green innovation. Thirdly, there existed a ‘U’-shaped moderating effect of technological progress towards the driving mechanism of compensation policies on green innovation. Currently, the moderating effect of technological progress in the sampling cities was located in the left half of the ‘U’-shaped (i.e., the negative moderating of technological progress), indicating that with the continuous improvement of technological level, the positive effect of ecological compensation policies was decreasing. This research provided important empirical evidence for improving the effect of ecological compensation forair quality,controlling regional competition and city size, optimizing the allocation of green innovation resources.

As a market-based environmental regulation tool, the effectiveness of environmental protection tax in promoting green competitiveness relies on market mechanisms. This study examined the heterogeneous effects of environmental protection tax on regional green competitiveness in the context of market integration. The results indicated that: (1) Threshold regression analysis revealed that the impact of environmental protection tax on regional green competitiveness depended on the level of local market development. When the market integration process reached a certain stage, environmental protection tax had a greater promoting effect on green competitiveness. However, as the market reached a highly integrated stage, the promoting effect of environmental protection tax diminished. (2) Mediation analysis showed that industrial structure upgrading played a significant mediating role between environmental protection tax and green competitiveness, while the factor of market development had a masking effect on the impact of environmental protection tax. (3) Further spatial econometric tests revealed that both environmental protection tax and market integration had significant effects on enhancing regional green competitiveness and generating positive spatial spillover effects, however, they exhibited a certain degree of substitutability. Finally, in order to maximize the enhancement effect of environmental protection tax on green competitiveness, policy recommendations were proposed towards an imporved coordination and reasonability of environmental protection tax policies.

Intensive land use and efficiency improvement are of great significance to the high-quality development of regional economy.Theoretical analysis of the coupling and coordination mechanism of intensiveland use and green economic efficiencywas performed. The methods of global principal components, super-efficiency SBM, coupling coordination degree model and geographic detector were used to analyze the spatial-temporal evolution characteristics and the coupling coordination relationship between the two systems in the Yangtze River Economic Belt. The driving factorsand the green economic efficiency showed a relatively strong spatial-temporal coupling correlation. The gradient decreased towards the middle and upper reaches. The areas in a state of coordinated development was continuingto expand to inland areas of Jiangsu and Anhui with Shanghai as the core. The coupling and coordination of the two systems was characterized by the complexity of multiple drives. The comprehensive explanatory power at the macro level was the overall pattern of economic development > natural endowments > social civilization. Industrial structure and population density werethe leading factors driving the high-quality coordinated development of the two systems. Civilization progress was the basic guarantee for the optimal allocation of regional resources and sustainable development. It is necessary to optimize resource allocation according to local conditions, strengthen inter-regional coordination and linkage, and jointly promote the balanced and high-quality development of the region as a whole.

Health tourism, which aims to enhance people’s health and recover physical and mental health, has become increasingly popular due to the ongoing improvement of people’s living standards as well as the increasingly severetrend of aging and sub-health. This paper developed an evaluation model and an indicator system for the attraction of health tourism based on the environmental, social, and symbolic dimensions of therapeutic landscapes. Taking the Yangtze River Economic Belt as a representative area, this paper quantitatively assessed the attractiveness level of health tourism in various provinces and cities from 2011 to 2020. In order to thoroughly explore the spatio-temporal differentiation, migration of gravity center and factor explanatory ability,the Thiel index, center of gravity model and geographic detector wereapplied. The results showedan increasing trendof the overall attractiveness level of health tourism.however, there was a significant regional gap, indicatinga progressively decreasing spatial pattern from east to west. The Theil index of attractiveness gradually decreased, indicating a decline in the regional gaps. However,the descent range was limited, and the impact of regional gaps on overall gaps was increasing. The trajectory of the gravity center of health tourism attraction showed a trend of reciprocal east-west return, with the center of gravity notably migrating towards the southwest from 2018. The attraction of health tourism wastheconsequence of the combination of anumber of factors. The development environment, cultural symbols, and social security of health tourism demonstrated the greatest explanatory ability, and factors hadsynergistic enhancement impact. Finally, this paper put forward targeted countermeasures and suggestions,in an attemptto provide decision-making reference for the coordinated development and overall layout of health tourism in the Yangtze River Economic Belt.

This study analyzed the spatial distribution pattern and internal differentiation characteristics of 992 national forest villages in the Yangtze River Delta.Mathematical statistics and spatial analysis were usedto reveal the influencing factors of the differentiation characteristics.This studyprovidedreferences fordecision-making on optimizing the zoning of forest villages. The findings were as follows: (1)The overall distribution of forest villages in the Yangtze River Delta region was relatively balanced, but there existed significant internal heterogeneity patternwithin the region. (2)The spatial distribution of forest villages exhibited a typical pattern of “large agglomeration and small dispersion”, with a multi-core “core-edge” structure in terms of aggregation form. (3)The spatial differentiation of forest villages was the result of the interaction of multiple factors, including industrial economy, social culture, and natural environment. Natural environmental factors werethe factors that influence the spatial differentiation of forest villages, exerting long-term influence on the spatial distribution pattern; while thehuman and social factors were the fundamental drivers of the evolution of the spatial patternof forest villages, which further amplified the spatial differentiation. (4)Based on comprehensive analysis of natural environment and socio-economic conditions, this study classifiedthe area intofour types of zones: agglomeration promotion zone, key development zone, moderate guidance zone, and urban fringe zone.Outcomes of this study provided a scientific basis for optimizing the zoning and implementing strategies for forest villages in the Yangtze River Delta at the county level.

Exploring the spatio-temporal transition and driving mechanism of the ecological efficiency of cultivated land use is of great significance for sustainableregional agriculturaldevelopment.Itcan also helpoptimize the policy system, and promotethe coordinated development of economy, resources and environment.In this paper, SuperSBM-Undesirable model, barycenter shift, ESTDA model, quantile model and spatio-temporal transition nesting were used to explore the spatio-temporal dynamics and driving mechanisms of cultivated land use eco-efficiency in 77 counties of Jiangsu province.The results showed that:(1) the center of gravity of eco-efficiency of cultivated land use shifted slightly to southeast and then to northwest.The high value area were mostly distributed in the “northwest - southeast” direction, while the low value area were mostly distributed in the “northeast - southwest” direction.(2)The eco-efficiency of cultivated land use showed a positive spatial correlation, with a significant spatial agglomeration of “high-high-low-low”.(3)The eco-efficiency of cultivated land use was characterized by both spatial synergy and competition, with spatial synergy leading the evolution of local spatial pattern.The path dependence of spatio-temporal evolution was obvious. There was a certain transfer inertia and path lock.(4)There were differences in the effects of various factors on different levels of eco-efficiency.Behind the four driving/restricting modes of spatio-temporal transition,there were different driving mechanismsincluding high quantile of planting structure-operating scale-industrial structure, low quantile of planting structure-operating scale, restricted by the high quantile of urban-rural gap - infrastructure, and restricted by the low quantile of agricultural infrastructure.In the future, it is urgent to build a collaborative mechanism for regional cultivated land use at the county level.It is also important to consider the comprehensive influence of multiple factors, and to formulate optimization strategies for collaborative linkage of multiple factors.In addition, differentiated efficiency optimization schemes should be formulated according to local conditions to provide targeted suggestions and guidance for the improvement of different levels of ecological efficiency.

Rapid urbanization has led to an decline in ecosystem servicest a hot topic on how to promote the coordination and sustainable development between urban expansion and ecological protection. studies use correlation indicators to measure the synergistic trade-offs between ecosystem services in a single period, less attention to the identification of dynamic relationships and the determination of the impact intensity. Taking Hubei Province as an example, this study measure four ecosystem services, namely water yield, food supply, maintain biodiversity and soil conservation, for the 2010 and 2020he dynamic trade-off synergy index (DESTI) to quantify the strength and direction of trade-offs and synergistic relationships among ecosystem services between 2010 and 2020he optimal parameter geo-detector to identify the driving mechanisms of the natural socio-economic factors. The results showed that: (1) from 2010 to 2020, except for habitat quality, the food supply, soil conservation, and water yield all show an increasing trend; (2) there significant spatial differences in the strength and direction of the dynamic trade-offs among the four ecosystem services; (3) the dynamic synergistic trade-offs were significantly by natural factors (sunshine hours, rainfall) and land use types, while the natural-economic interactions also the synergistic relationships. Natural-economic interactions also enhanced the spatial differences in synergistic trade-offs. This study comprehensively clarifie the spatial characteristics, intensity and driving mechanism of regional dynamic synergistic trade-offs, and propose control measures that contribute to synergistic development of regional ecology and economy.

The matching of ecosystem services supply and demand reflect the degree of coordination between regional ecological and socio-economic development. It is significant to reveal its spatial heterogeneity and dominant drivers for the synergistic development of ecology and agriculture in agricultural production areas. Taking the Four Lakes Basin in Hubei Province as the research object, ArcGIS、InVEST model and geographic probe to quantitatively measure the supply and demand matching status. The results show that: (1) The spatial distribution patterns of the ecosystem services in low-value supply areas and high-value demand areas mainly located in the highly urbanized areas in the western part of the basin. (2) Except for carbon sequestration services, other ecosystem services cmeet the internal demand of the basin, and the comprehensive supply-demand ratio of the basin is 0.28, which is in surplus. (3) The supply-demand ratio for each ecosystem service show spatial variability, the cold spots of water purification services was not significant, while the cold spots of other services concentrated in the highly urbanized western areas. The hot spots of services distributed in the dense areas of wetland and cultivated land. (4) Construction land and cultivated land the dominant factors affecting the balance of supply and demand between hotspot and coldspot of ecosystem services in the Sihu Lake Basin, respectively. It is significant to balance the area of cultivated land and construction land, increase the area of wetlands to achieve the balance of supply and demand in the basin. The results can provide scientific support for ecosystem conservation and sustainable use of land resource in Sihu Lake Basin and other similar agricultural basins.

Understanding the water and soil resource balance in China's critical grain-producing regions is essential for optimizing grain production structure national food . This study focuse on the Dongting Lake Basin in the southern and utilize multiple sets of land use data, conventional meteorological station data, and DEM data to systematically identify changes in cultivated land use land addition, type conversion, persistence, and loss. Additionally, the Penman-Monteith equation and the effective precipitation model employed to reveal the climate water balance characteristics and the impact of cultivated land use on water and soil resources. The results indicate : 1) Over the past 40 years, paddy fields in the Dongting Lake Basin maintained a relatively stable spatial distribution, while dryland shifted northwestward by 17.36 km2. The relative proportion of persistent cultivated land reached 70.63%, and areas with lost cultivated land primarily distributed in regions Huaihua and Xiangxi Prefecture. The newly added cultivated land s converted from forest land, conversions concentrated in areas Hengyang, Shaoyang, and Loudi; 2) The southern and Dongting Lake regions exhibit higher evapotranspiration capacity, while the western to northwestern regions lower capacity. Effective precipitation gradually increase from northwest to southeast; 3) The proportion of water-deficient areas was only 1.79% in 1980 but increased to 32.84% by 2020. The Dongting Lake region and Yongzhou face a higher risk of water deficit; 4) The climate water balance of cultivated land shifted from a surplus to a coexistence of deficit and surplus. Water-deficient areas mainly distributed in the Dongting Lake region, the northwestern part of the Xiangjiang River Basin, and Yongzhou. The expansion of water-deficient areas s mainly concentrated around changes in cultivated land use, with paddy fields as the core.Thfindings provide valuable insights for making informed decisions on the sustainable development and utilization of cultivated land in the studied basin.

Regional total water pollutant allocation is the key to inter-regional equitable coordination and efficient economic development. In order to balance efficiency and equity, the optimal efficiency solution with the smallest distance from the ideal equity solution s taken as the final solution, thus the total emissions allocation model s constructed and the total COD allocation scheme s calculated for each prefecture-level city for the "14th Five-Year Plan". Results show that: (1) Yancheng and Xuzhou, which halarger historical COD emissions, allocated 14.2% and 12.1% of Jiangsu Province's emissions, which manifest historical and developmental equity, and they b18.5% and 10.8% of the province's emissions reduction quota, evidencing the principle of equity of "whoever pollutes governs"; (2) Wuxi and Changzhou, higher economical level and unit emission output, in line with the requirement of efficiency prioritization, as the final scheme of emission allocation s larger than the equity scheme. Based on this, Jiangsu Province prefecture-level cities divided into four categories based on COD emission reduction rate and per capita GDP, so as to separately explore and discuss the path of sustainable development.

Based on the published and recent measurement of microcystins (MCs) in Lake Taihu from 1999 to 2021, the long-term variation and health risks of MCs were analyzed by Mann-Kendall trend test and hazard quotient index to provide support for further strengthening of MCs monitoring and risk assessment. The results showed that the total MC (TMC), intracellular MC (TIMC) and extracellular soluble MC (TEMC) concentrations have been increasing slowly since 1999, and the monthly mean concentrations of TMC and TEMC ranged from 0.01-19.50 μg/L and 0.001-6.44 μg/L, respectively. For seasonal variation, the three kinds of MC in spring showed an upward trend year by year, while summer and autumnTEMC showed an upward trend in winter. In different lake areas, TMC and TIMC also showed an increasing trend, especially in the central and southern lake area, and the Eastern Lake. The TEMC concentration increased in Gonghu Bay, and the average annual TEMC concentration was the highest in Zhushan Bay (0.53 μg/L), the TEMC concentration was the highest in Meiliang Bay in summer and autumn. Health risk assessment showed that there were three TEMC exposure risk peaks in Lake Taihu, and the risk value was the highest during 2013-2015. The risk value of TEMC in Zhushan Bay was the highest, followed by Meiliang Bay. This study can provide the scientific basis for health risk assessment and control of harmful cyanobacterial blooms in shallow lakes.

Normalized and systemic eDNA (environmental DNA) monitoring is very helpful for aquatic biodiversity monitoring, assessment and conservation. The lack of quantified spatial resolution of eDNA monitoring hinders the implement of normalized and systemic eDNA monitoring. To quantify the spatial resolution of eDNA monitoring, we explored a quantification method based on black-box model, simplified ecological processes and the statistical representation of spatial resolution. e took a case study of quantifying the spatial resolution of eDNA monitoring in the middle reach of Yangtze River. Th30 sampling transections with an approximate 30 km  ccording to eDNA sampling in mean-flow period, next generation sequencing and watershed biological information flow (WBIF) analyzing, the characteristics of eDNA monitoring spatial resolution. Here, two taxa (eukaryotes and prokaryotes, respectively indicated by mitochondrial COI gene and 16S rRNA gene) were identified and analyzed. Results showed that , the prokaryotic WBIF transport capacity was 99.91%/km, the WBIF labeling nonliving prokaryotic materials accounted for 23.83% of the total prokaryotic WBIF and had a half-life distance of 48.45 km; the eukaryotic WBIF transport capacity was 99.85%/km, the WBIF labeling nonliving eukaryotic materials accounted for 67.93% of the total eukaryotic WBIF and had a half-life distance of 30.00 km. There was tradeoff between the reliability and coverage of eDNA monitoring spatial resolution. The reliability and coverage of prokaryotic eDNA monitoring spatial resolution got their balance point at 39 km with the value approximate 86%. The reliability and coverage of eukaryotic eDNA monitoring spatial resolution got their balance point at 28 km with the value approximate 65%. To adapt different monitoring aims, one could select different eDNA monitoring spatial resolutions based on a suitable reliability or coverage. To identify the species composition of a unit reach, one should give priority to the coverage of eDNA monitoring spatial resolution. 90% prokaryotic coverage need a spatial resolution of 27 km (reliability, 84.18%); 90% eukaryotic coverage need a spatial resolution of 6 km (reliability, 41.38%); 80% eukaryotic coverage need a spatial resolution of 13 km (reliability, 50.64%). To identify the species spatial heterogeneity of a set of adjacent reaches, one should give priority to the reliability of eDNA monitoring spatial resolution. 90% prokaryotic reliability need a spatial resolution of 58 km (coverage, 82.30%); 90% eukaryotic reliability need a spatial resolution of 78 km (coverage, 38V61%); 80% eukaryotic reliability need a spatial resolution of 50 km (coverage, 49.70%). As a pilot study of eDNA monitoring spatial resolution in middle Yangtze River, thresults were not accuracy enough, because of the spatial and temporal heterogeneous WBIF along the river, and the systemic errors of random sample. Thwork could provide a quantitative reference for the eDNA monitoring sampling setting in the middle reach of Yangtze River and a methodology reference for the eDNA monitoring spatial resolution estimating in other free flowing rivers and reaches.

Under the background of "green waters and green mountains are golden mountains and silver mountains", ecological risk assessment is an important way to protect and monitor the ecological environment. In order to balance the contradiction between ecological environment and socio-economic development, regional ecological risk assessment is a necessary measure a scientific basis for formulating sustainable development policies. his paperarea of "Xiangyang-Shiyan-Suizhou-Shenlongjia" as the research object, based on the classic "risk=probability × loss degree "evaluation model and the 6km × 6km grid scale, the spatio-temporal evolution characteristics of ecological risks diagnosed over the past 20 years. The results indicate that: 1) Considering external multiple source stress and internal system losses, this paper establishe an indicator system of 14 factors from three dimensions of nature, culture, and landscape to reflect the sources of urban ecological risks and ecosystem losses; 2) The probability of ecological risk increased by 8.65%. The probability of ecological risk s relatively low, and mainly at levels I and II, showing an upward trend; 3) The research area s mainly composed of low level ecosystem loss areas, with an increase of 6.66% in ecosystem loss, especially in the central and eastern regions where the proportion of IV, V level ecosystem loss continue to increase and the distribution area gradually increase; 4) From the perspective of comprehensive ecological risks, the research area s mainly characterized by low ecological risk, and the comprehensive ecological risk decreased by 1.90%. The spatial pattern of level change show a "constant zone as the main area, with an increase in the periphery of the core urban area and a decrease in the peripheral mountainous areas". The area of level change reache 10006.36 km2, and the areas with increased risk levels continue to expand. This research can provide theoretical and methodological references for the evaluation and restoration of ecological risk , which is in line with the new perspective of regional ecological risk evaluation in other similar areas.

carbon status of cultivated land is not only of great significance for sustainable agriculture development and achieving carbon peaking and carbon neutrality goals of our country, but also reflects the degree of agricultural influence on ecology. Based on the agricultural data and cultivated land data from the districts in the Three Gorges Reservoir area (Chongqing Section), the spatio-temporal evolution of the carbon status of cultivated land utilization was studied. The results showed that: (1) From the perspective of time, the carbon absorption of cultivated land in the reservoir area increased by 8.1815 million tons from 2000 to 2020, an increase of 62.68%he carbon absorption ratio of vegetables and grain crops was the largest; In the past 21 years, carbon emissions increased by 84,900 tons, 15.23%. Fertilizer was the main contributor to carbon emissions, with an average annual carbon emission ratio of 57.22%. There a carbon ecological surplus in the cultivated land utilization in the reservoir area for 21 years, and the carbon footprint and the carbon footprint per unit area continuously decreas, and the carbon footprint ecreased by 44.72%. (2) From spatial perspective the carbon emissions and carbon absorption of cultivated land utilizatin in the reservoir area were the southwest and low in the northeast, while the carbon footprint showed a pattern of high in the north and south and low in the middle, but the spatial differences and the range of change of the three were .  The carbon sink function of cultivated land utilization in reservoir area generally increas. 

In the context of China's carbon neutrality strategy, formulating a low-carbon development strategy that adapt to the territorial space functions is of great significance to realizing green development in Chinese counties. The study took Yulong County, a rocky desertification mountainous area in northwest Yunnan, as the study area. he carbon emission coefficient, life cycle, and net ecosystem productivity estimation methods to calculate the carbon source/sink of the territorial space and analyze spatiotemporal characteristics; by analyzing the carbon source/ sink benefits, the carbon imbalance space and constructed at grid scale. Results: (1) From 2010 to 2020, Yulong County was dominated by ecological space, and living space expanded rapidly. (2) The carbon source and sink of the production-living-ecological space increased. The carbon source increased dramatically, showing the spatial distribution characteristics of "High in the west and low in the east" and high values concentrated in the southeast. (3) From 2010 to 2020, the carbon source/sink efficiency dramatically improved, and there were  obvious spatial difference; the carbon imbalance space accounted for 47.30%, with the carbon source imbalance dominating. (4) Carbon imbalance at grid scale was divided into five zones: ecological carbon sink functional zone, low-carbon priority development zone, ecological carbon sink enhancement zone, production high-carbon optimization zone, and living high-carbon control zonedifferentiated countermeasures for collaborative emission reduction within the county.  At grid scale, the territorial space in northwest Yunnan dominated by ecological space in the past ten years,  the expansion of living space accelerated. Carbon source and sink in production-living-ecological space increased, but sources were much greater than sink; the growth of carbon emissions in industrial and mining production space and living space far exceeded the carbon absorption in ecological space; the carbon source and sink efficiency was on the rise and was higher in the east and west and lower in the southeast. The carbon imbalance space accounted for 47.30%; based on low-carbon development, emission reduction, and sink increaseive carbon imbalance comprehensive zones were divided, and low-carbon development countermeasures were proposed to provide a reference for China's county low-carbon territorial space planning.