首页 > , Vol. , Issue () : -
Ecosystem is the basis for human survival and sustainable economic and social development. Carrying out ecological quality evaluation provides a scientific basis for formulating ecological protection and restoration policies and serving the construction of ecological civilization. Starting from the national-scale annual operational evaluation requirements for ecological quality, this paper constructs a remote sensing evaluation framework for ecological quality that characterizes the three dimensions of "function-stability-stress" based on land use and vegetation parameter data. The ecological quality was monitored and evaluated, and the results showed that,in 2018, the overall ecological quality of the country was in good condition, with 36.98% of the ecological quality above average, and only 4.33% of poor ecological quality. Fujian, Hainan, Guangxi and other places have the best ecological quality; From 2000 to 2018, 53.97% of the regional ecological quality showed an improvement trend, and the improvement trend was more obvious after 2011. The ecological quality situation in some regions of the country is still not severe, the ecosystem function is low, the ecosystem stability is poor, and the ecosystem stress is at a high level. Summarizing from the application results of the national ecological quality assessment, we can see ecological quality assessment system is scientific, simple, fast, and economically feasible, and can meet the needs of rapid assessment of regional or national ecosystem quality.