Changes in Ecosystem Service Value in the 1 km Lakeshore Zone of Poyang Lake from 1980 to 2020

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.

Assessment and Estimation of the Spatial and Temporal Evolution of Landscape Patterns and Their Impact on Habitat Quality in Nanchang, China

“…(3) From the perspective of habitat degradation, habitat degradation is especially obvious near the city and around the watershed. On the basis of controlling the scale of construction land, it is also crucial to strengthen watershed protection to achieve the goal of ecological security [53]. The above measures are of practical significance for territorial development plans and the construction of ecological security.…”

Study on the Spatial and Temporal Evolution of Regional Green Space Morphology Outside Built-Up Areas based on the Google Earth Engine and Biophysical Component Modeling

“…The regional environmental coverage of ecological resources has become much larger than the built-up area [1]. The existing research is mostly focused on the scope of the built-up area, but the green space within the built-up area and the regional green space outside the built-up area are very different [40,41]. The collection of regional green space dynamic data and their spatial evolution characteristics need to be further strengthened to fill the gap in the relevant This study analyzed the spatial pattern of the regional green space landscape outside the built-up area of Shanghai using remote sensing data from 2000 to 2020, effectively making up for the lack of research on regional green spaces outside built-up areas, to help ensure the healthy and stable development of the regional environmental system.…”

Multitemporal Spatial Analysis of Land Use and Land Cover Changes in the Lower Jaguaribe Hydrographic Sub-Basin, Ceará, Northeast Brazil

“…Understanding the dynamics between human beings and the environment is already considered a priority for research and investment by the entire community that studies global environmental changes [1]. Consequently, understanding the integration between complex human-environmental systems, analyzing their causes, consequences, and effects is essential to organize land use and obtain information that improves the management of river basins and environments [2,3].…”

“…The increase in agricultural areas is one of the most significant and essential changes in land use, affecting environmental sustainability [4] and causing deforestation [5]. Therefore, it is considered one of the main ways of analyzing the social-environmental interaction and is being recognized in several regions of the globe, such as Lake Poyang, China [2], Msimbazi basin, Tanzania [6], Ethiopian basins [7], and the Brazilian Cerrado [8].…”