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Ecological priority and green development have become the main theme of the times in China. The policy performance evaluation of ecological protection needs to quantitatively identify the changes of ecosystem quality and services firstly. This paper constructed the analytical framework driven by ecological protection policy of “Goal-oriented—Policy...
Citations
... Ecological source patches mainly select objects with good habitat quality and high value of ecological services as targets, such as ecological wetland parks, forest reserves, nature reserves, scenic spots, and other green patches . Elevation and slope affect the spatial distribution and utilization of land resources Tang et al., 2022). Land use type will affect the material energy and information exchange within and between ecological source nodes. ...
As a primary concern in the ecosystem, understanding the impact of spatial heterogeneity of ecological networks on the development of environmental sustainability has overarching significance. The Tibetan Plateau’s edge is a vital contribution to the study of the plateau’s ecological network. However, there are few studies and explorations on the county-level ecological network in the arid region. This study aimed to evaluate ecological network spatial patterns in Tianzhu County and establish an ecological security evaluation index system. We used the minimum cumulative resistance (MCR) model and built an ecological resistance surface model from the exploratory spatial data analysis (ESDA) method. Then, by identifying ecological corridors and ecological nodes from the gravity model, we analyzed the ecological security pattern and proposed specific plans for optimizing the situation. The results showed that 1) county ecological security overall has been lower, and its values showed spatial heterogeneity in each direction, and 2) the Z-Score of the ecological security evaluation index was 70.1893, which shows ecological vulnerability in the arid region has significant spatial autocorrelation. The study identified 156 ecological corridors and 112 ecological nodes, which formed an ecological spatial pattern of “one belt and three zones.” Our analytical framework offers a valuable tool for constructing ecological security patterns in Tianzhu County and selecting “sources” at the regional scale, which can be applied to landscapes and geographical contexts for sustainable development in arid regions.
Ecosystem services value (ESV) can assess the level of basin ecological restoration and provide a basis for ecological management decision-making. This study object selects Liaohe River Basin (LHB), a typical basin in Northeast China. The ecosystem service value variation caused by changes in land use cover and the spatial distribution characteristics was evaluated by employing the benefit transfer method, which is based on data sets for land use over 2000–2020. Meanwhile, geographical detector was employed to investigate the impacts and interactions of various factors driving the ESV, and predicted future changes in land and ESV by PLUS model. The results showed the following: (1) LHB land transformations mainly concentrated in the transformation between grassland, farmland and forestland. ESV in LHB decreased and then increased between 2000 and 2020 (1224 billion-928 billion-1238 billion), (2) Ecosystem service value exhibited a strong positive spatial autocorrelation, high ESV was mainly distributed in the eastern and western regions of LHB, and low ESV in the central region. (3) The variation in ecosystem service value mainly arose from the human activity intensity index of human factors. (4) In the future, the ecological protection priority scenario could improve the ESV in LHB, and the natural development priority and economic development priority scenario was not conducive to the improvement of ESV. The results showed that the ecological restoration effect of the LHB was obvious with the ecosystem service value is significantly improved. In the future, attention should be paid to control human activities and strengthen ecological protection in ESV hotspots.
