Spatial-temporal dynamic changes of land use and ecological effects in Songliao Basin
At present,China attaches great importance to the construction of ecological civilization based on the river basin.Timely and effective assessment of the temporal and spatial changes of the ecological environment quality of the river basin and analyzing its driving factors are very important for formulating the cooperative pro-tection and the construction of ecological civilization based on the river basin.This paper uses principal compo-nent analysis to establish the ecological environment assessment model of the Songliao River basin based on the four indicators of greenness index,humidity index,dryness index and heat index obtained by remote sensing products with data as the key element,and explores the changes and causes of ecological environment quality.The results show that:(1)The ecological environment quality of the Songliao River basin is excellent overall,showing the spatial distribution of"being excellent in the northeast and poor in the southwest".(2)From 2000 to 2020,the ecological quality of the Songliao River basin has generally improved.The ecological quality has been greatly improved in the first decade,and the second decade is in the stage of ecological protection and ma-intenance.(3)From the perspective of spatial distribution,the area with poor ecological grade and below sig-nificantly shrank,and the area with excellent grade expanded outward.(4)Human socio-economic production activities play a crucial role in the quality assessment of ecological environment.How to balance the relationship between socio-economic production and ecological environmental protection is the key to helping ecological en-vironment restoration.
ecological environment assessmentremote sensing ecological indexPCAremote sensing dataSongliao River Basinland use and land cover change
万方数据
维普
