Abstract
Quantitative assessment can scientifically determine the health status of a regional ecosystem, identify regional eco-environmental problems, and assist in promoting regional sustainable development and environmental management. Taking China’s important ecological function region, the Yellow River affected area as an example, this study constructed an extended evaluation index system based on the pressure-state-response framework, and remote sensing and GIS techniques were used to dynamically evaluate the spatial and temporal characteristics of ecosystem health in the study area. Furthermore, influencing factors on ecosystem health in the study area were extensively analyzed using the GeoDetector model. The results show that the ecosystem health level in the study area shows significant spatial heterogeneity from 1995–2015, and showed a fluctuating change process. Areas with large fluctuations in health level were mainly distributed in extreme climate areas, ecologically fragile areas, on plains and in hilly areas. Spatial differences of ecosystem health were well explained by using the biological abundance index, relief degree of land surface, soil type, annual average precipitation, elevation, annual average temperature, and population density. Influencing factors have significant interactive effects on ecosystem health.
Highlights
Damage to the ecological environment is a major global issue that needs to be studied and resolved [1,2]
The study of ecosystem health is helpful in understanding the health status of regional ecosystems and identifying eco-environmental problems and plays an important role in promoting regional sustainable development and environmental management
From 1995 to 2015, low value areas of ecosystem health were mainly distributed in the Wulanbuhe
Summary
Damage to the ecological environment is a major global issue that needs to be studied and resolved [1,2]. With an increase in the scope and intensity of human social and economic activities, human disturbance has produced a series of significant negative problems on different regional scales related to land cover, biodiversity, hydrological systems and local climate [1,3,4], such as ecosystem degradation, environmental pollution and global warming [5,6,7]. The ecological environment limits human social and economic development to a certain extent, resulting in a gradual realization that the maintenance of ecosystem health is very important. The study of ecosystem health is helpful in understanding the health status of regional ecosystems and identifying eco-environmental problems and plays an important role in promoting regional sustainable development and environmental management
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