Abstract
Poyang Lake is a typical lake in the middle and lower reaches of the Yangtze River and is the largest freshwater lake in China. The habitat quality of Poyang Lake has been declining in recent years, leading to a series of ecological problems. An ecological risk evaluation, based on land use, is important in order to promote a coordinated development of land use and the ecological environment. In this paper, land use data from the Poyang Lake basin in the corresponding years are interpreted based on the images from the Landsat satellite mission in seven periods from 1980 to 2020. The lake surface and the 1 km lakeshore zone of Poyang Lake are extracted based on the interpreted land use data. Finally, the ecological service value per unit area of the area is measured by combining it with the Chinese terrestrial ecosystem service value equivalent table, and then with the value of each ecological factor and the value of the changes to land use type. The research results show that: (1) from 1980 to 2000, the lake area of Poyang Lake had an overall decreasing trend (the area slightly increased from 1980 to 1990); from 2000 to 2020, the lake area of Poyang Lake gradually increased (the area slightly decreased from 2015 to 2020). (2) The farmland, forest, grassland and desert areas gradually increased and the wetlands gradually decreased over 40 years; the area of the water body gradually increased from 1980 to 2010, and gradually decreased from 2010 to 2020. (3) The ecosystem service value of the lakeshore zone of Poyang Lake fluctuated around 15,000 × 106 Yuan from year to year.
Highlights
How to use land use/cover changes to understand changes in complex human–environment systems in an integrated manner—i.e., causes, consequences, and effects—is one of the focal issues in the land use discipline [1]
Estimation and the various ecosystem service values proposed by Costanza et al [8], scholars in various countries have determined the appropriate Ecosystem Service Value (ESV) for different study areas
The groundwater flow direction in the lakeshore zone of Poyang Lake is mainly from the surrounding hilly flow direction in the lakeshore zone of Poyang Lake is mainly from the surrounding hilly area areato tothe thedownstream downstreamlake lakearea areawhere wherethe theterrain terrainisisrelatively relativelyflat, flat,and andthe thegroundwater groundwater flows towards the river and lake area in general flows towards the river and lake area in general [32]
Summary
How to use land use/cover changes to understand changes in complex human–environment systems in an integrated manner—i.e., causes, consequences, and effects—is one of the focal issues in the land use discipline [1]. Many scholars are beginning to focus on changes in land use landscape patterns from different perspectives and scales [2,3]. With the correction and refinement of the principles and methods of Ecosystem Service Value (ESV). Estimation and the various ecosystem service values proposed by Costanza et al [8], scholars in various countries have determined the appropriate ESVs for different study areas. After the MA, the United Nations organized and implemented The Economics of Ecosystems and Biodiversity (TEEB) project (2007–2010), and the UNEP supported the establishment of the Intergovernmental Science-Policy in 2012. In 2012, the UNEP supported the establishment of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES). Scholars have started to use machine learning in order to construct ecosystem service frameworks [11]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
