Ecosystem quality assessment and its spatial-temporal pattern evolution in Wuling Mountain Area,Guizhou
Ecosystem quality is an important indicator for measuring the health of regional ecosystems.Scientific assessment of ecosystem quality is of great scientific significance for rapidly promoting natural environment protection and restoration,as well as evaluating the benefits of ecological restoration.In this study,the evaluation model of ecosystem quality index(EQI)was constructed based on three eco-system remote sensing parameters:Fractional vegetation coverage(FVC),leaf area index(LAI),and gross primary productivity(GPP).The ecological quality status of Wuling Mountain area in Guizhou Province from 2015 to 2020 was calculated,and the spatiotemporal evolution and fluctuation character-istics were revealed The results showed that:1)From 2015 to 2020,FVC,LAI,and GPP in Wuling Mountainous Area of Guizhou showed an increasing trend,with growth rates of 3.40％,2.00％,and 0.61％,respectively.2)FVC,LAI,and GPP were mainly in lower and low fluctuation states,with area proportions of 83.14％,83.93％,and 93.56％,respectively.3)The EQI of Wuling Mountain Area in Guizhou Province increased by 2.30％,with 98.74％of the area in a lower and low fluctua-tion state.4)The overall ecological quality of Wuling Mountain Area in Guizhou was in an excellent and good state,and the proportion of these areas in each year exceeded 95％.The improved areas were mainly in counties of Dejiang,Sinann,and Shiqian,while the degraded areas were mainly coun-ties of Yuping,Jiangkou,and Wanshan District.This study can provide theoretical support for ecosys-tem management and restoration benefit evaluation in Wuling Mountain Area of Guizhou.
万方数据
维普
