Study on the Evolution Law of Vegetation Coverage Along Typical Highway Section in Horqin Region
In this paper,Landsat8 images of Jilin section of Tieli-Horqin Right Wing Middle Banner Expressway(G1015)in 2003(before construction),2015(under construction)and 2021(after construction)were selected as data sources.Based on the buffer normalized Vegetation index(NDVI)and vegetation coverage(FVC),the temporal and spatial variation characteristics of vegetation in the G105 route segment were studied and analyzed.The conclusion showed that before the highway construction,the vegetation coverage in the study area was mainly medium,while during and after the highway construction,the vegetation coverage in the study area was mainly low.Compared with before highway construction,the area proportion of low vegetation coverage increased by 54.28％,the low vegetation coverage decreased by 10.64％,and the middle vegetation coverage decreased by 16.48％.It can be seen that highway construction had a serious impact on the surrounding environmental vegetation along the highway.After the completion of the construction,the medium vegetation coverage increased by 1.7％,and the vegetation coverage improved,gradually tending to a new ecological balance.Through the temporal evolution law of vegetation cover along Tieke Highway,the influencing factors of highway construction on ecological environment were clarified,and on this basis,the green sustainable development path was proposed.
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万方数据
