长江流域资源与环境 >> 2018, Vol. 27 >> Issue (06): 1397-.doi: 10.11870/cjlyzyyhj201806024

• 生态环境 • 上一篇    下一篇

LUCC影响下湖南省生态系统服务价值时空演变

熊   鹰1,2,张方明1,2,龚长安3,罗   朋1   

  1. (1.长沙理工大学建筑学院, 湖南 长沙 410114; 2. 长沙理工大学资源环境与城乡规划研究中心, 湖南 长沙 410114; 3.湖南省经济地理研究所, 湖南 长沙 410004)
  • 出版日期:2018-06-20

 Spatial-temporal Evolvement of Ecosystem Service Value in Hunan Province Based on LUCC

XIONG Ying1,2,ZHANG Fang-ming1,2,GONG Chang-an3, LUO Peng1   

  1. (1.College of Architecture, Changsha University of Science and Technology, Changsha 410114, China; 2. Research Center of Resource Environment and Urban Planning, Changsha 410114, China;3.Hunan Institute of Economic Geography, Changsha 410004, China)
  • Online:2018-06-20

摘要:  基于土地利用/覆被变化(LUCC)遥感解译数据,利用生态系统服务价值评估模型及GIS空间统计方法,探讨了湖南省1990~2015年间生态系统服务价值(ESV)时空格局及其动态演化。结果表明:湖南省生态系统服务价值总体呈下降趋势,其中减少最明显的是耕地、林地和草地系统价值。生态系统服务价值空间格局的等级差异明显,ESV 高值区与低值区相互溶解渗透,总体上高值区与较高值区对低值区呈包围态势。高值和较高值区分布较均匀、低值与较低值区分布较集中,中等值区分布较为散乱,呈随机镶嵌结构分布格局。生态系统服务价值及其动态演化的空间自相关与高低值聚集现象明显,但其相关性与聚集程度趋于弱化。“退田还湖”、“退耕还林”、“绿色湖南”等政策的实施,促使研究区域的ESV增加并形成若干增值热点区,城镇化、城市扩张与土地开发导致生态系统服务价值损失,并形成城镇密集区、水土资源富集区分布的价值损失冷点区。
关键词: 土地利用/覆被变化(LUCC);生态系统服务价值(ESV);空间格局;时空演变;湖南省

Abstract:

Based on the data of LUCC (Land Use/Cover Change) extracted from remote sensing interpretation in the Hunan Province from 1990 to 2015, spatial and temporal patterns and dynamic evolution of ecosystem service values (ESV) has been analyzed using ecological value assessment model and GIS spatial statistics method. The results showed that the ESV in Hunan Province was decreasing generally, of which the most obvious reduction was the ESV of cultivated land, forest land and grassland system. Significant differences in spatial patterns of ESV existed in different analysis units, in which high value units and low value units were infiltrated into each other, while high value units and sub-high value units embraced low value units. In general, high value units and sub-high value units were distributed homogeneously, while low value units and sub-low value units concentratedly and medium value units randomly. Significant spatial autocorrelation and high/low clustering were identified for ESV and its dynamic changes, but the trend level has weakened, which may be consistent with the disorder and complexity of ecosystem change. We conclude that a series of policies of Returning Farmland to Lakes, Returning Farmland to Forest and Green Hunan, have brought about increment of ESV and aggregation of high values (hot spots). In the meantime, urbanization, urban sprawl and farmland development resulted in a loss of ESV and led to the distribution of low values (cold spots) in the densely urban areas and the area of abundant water and land resources.
Key words:land use and land cover change (LUCC); ecosystem service values (ESV); spatial pattern; spatial and temporal evolvement; Hunan Province

 

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