RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2023, Vol. 32 >> Issue (10): 2184-2195.doi: 10.11870/cjlyzyyhj202310016

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Evolution and Prediction of Habitat Quality in the Three Gorges  Reservoir (Chongqing section) Based on the InVEST-PLUS Model

LIANG Tian1,2, HUANG Xi2, YANG Fei3, MAO Yi-ran2,LUO Yin-chen4,  WEN Chuan-hao5, REN Xiao-hong1   

  1. (1.College of Economics and Management, Chongqing Jiaotong University, Chongqing 400074 China; 2.College of Public Management, Chongqing Finance and Economics College,Chongqing 401320, China; 3.Research Center for Economy of Upper Reaches of the Yangtze River, Chongqing Technology and Business University, Chongqing 400067, China;4.College of Economics, Chongqing Finance and Economics College, Chongqing 401320, China; 5.College of Economics, Yunnan University, Kunming 650091, China）
  • Online:2023-10-20 Published:2023-10-26

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Abstract: Habitat quality is an important representation of biodiversity maintenance capacity.The study of land use change can provide a scientific basis for the assessment of spatiotemporal dynamic evolution characteristics of regional habitat quality. Based on the land use data in 2000, 2010, and 2020.The bubble map method, InVEST model, and PLUS model were integrated to evaluate and predict the land use transformation and associated habitat quality evolution in the Three Gorges Reservoir Area (Chongqing section) from 2000 to 2030.Ecological contribution rates were used to explore the types of land use transfers that ledto the improvement and deterioration of habitat quality. The results showed that: (1) From 2000 to 2020, the center of gravity of various types of land use changed significantly, the area of cultivated land and grassland showed a trend of continuous decline, and the area of construction land continued to increase.The trend of land use change from 2020 to 2030 was basically the same as that from 2000 to 2020, and the cultivated land was mainly transformed into construction land. (2) Habitat quality was greatly affected by the intensity of human activities. The habitat quality in the study area was mainly “medium” and “excellent”.From 2000 to 2020, the habitat quality showed a trend of an increase, followed bya decrease. From 2020 to 2030, habitat quality showed a trend of continuous decline. (3) There are two trends of habitat quality: improvement and deterioration. The conversion of cultivated land to woodland and grassland from 2000 to 2020 was the main reason for the improvement of habitat quality.The conversion of grassland and woodland to cultivated land was the main reason for the deterioration of habitat quality. The conversion of cultivated land and grassland to construction land was predicted to be the main cause of habitat quality deterioration during 2020-2030. The results provided important theoretical support and scientific reference for the improvement of habitat quality, optimization of territorial spatial layout, and sustainable utilization of land resources in the Three Gorges Reservoir area (Chongqing section).

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