科研之友
微信
新浪微博
Facebook
分享链接
摘要
Spatial and temporal variations in ecosystem services (ESs) are driven by two dimensions, environmental factors and trade-off/synergy between services. In the ecological conservation red line area that can guarantee regional and national ecological security and sustainable economic and social development, it is particularly important to clarify the driving mechanism of ESs for the management and optimization of ecosystem. Taking Beijing's ecological conservation red line area as an example, this study considers soil conservation, water yield and vegetation carbon sequestration, and uses Geodetector to identify the influencing factors of the relationship between the three ESs. Then, based on the partial correlation method, the impact of the net relationship between services and environmental variables on ESs is quantitatively separated and compared. Results show that trade-offs and environmental variables have varying degrees of influence on the spatial heterogeneity of ESs, and their interactions can enhance the decisive power of the corresponding individual variable. The differences in the formation process of various services make the factors that affect the relationship between services different, but the land use intensity is the most important factor for the spatial relationship between the three services, indicating that the rational planning of land use is crucial to the coordinated optimization of ESs in the Beijing's ecological conservation red line area. After removing the extremely important factors, the net relationship between services and the impact of environmental variables on ESs were compared. It is found that environmental variables (slope and precipitation) had stronger driving force on the spatio-temporal change of soil conservation. Precipitation and vegetation carbon sequestration have similar effects on water yield. Spatial and temporal changes in vegetation carbon sequestration, with relatively small effects from environmental variables, were closely related to the other two services.
-
单位中国科学院; 中国科学院大学
