Abstract
Accelerating process of urbanization has brought about a series of ecological and environmental problems. In this paper, vegetation index, humidity index, surface temperature, and building-bare soil index are used to quantitatively characterize the four ecological element indexes of greenness, humidity, heat and dryness. Through principal component analysis, a remote sensing ecological index model is established, and this article comparatively analyzes the remote sensing ecological index in 2014 and 2019 from the two dimensions of time and space. The results show that the ecological environment of Qingdao is partially optimized and improved but the overall trend is decreasing.
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