山地高速公路建设期对生态质量的影响——以莆炎高速YA12标段为例

Influence of Construction Period of Mountain Expressway on Ecological Quality

近年来中国公路基建发展迅速,成为经济民生发展的重要连接点,然而公路建设需要付出一定的环境成本,进行公路生态质量监测评估有着重要的辅助决策意义。选取莆炎高速中仙—里心段YA12标段为对象,基于Sentinel-2和Landsat-8卫星影像数据,利用遥感生态指数(RSEI)进行缓冲区路域生态质量及其变化的综合评价,认为RSEI方法对路域的生态质量评价有一定的科学性和适用性。生态退化核心区处于高速公路建设缓冲区300 m范围内,尤其是隧道口施工与堆土占地;研究区地形起伏对生态质量变化存在梯度影响。

The construction of freeway in China has developed rapidly and become an important link in the development of China's economy and people's livelihood recently.However,the freeway construction needs to pay a certain environmental cost,so it is important to carry out the freeway ecological quality monitoring and evaluation.Based on sentinel-2 and Landsat-8 satellite image data,this study used RSEI to comprehensively evaluate the ecological environment quality changes in YA12 section of Zhongxian-Lixin section of Puyan Highway area of buffer zone.This researches show that the index method of remote sensing information(RSEI)is scientific and applicable for evaluating the ecological environment impact of road area.The environmental degradation area is concentrated within 300 m of the highway construction core area,especially the area occupied by tunnel opening construction and soil stacking.In addition,topographic relief has a gradient effect on ecological quality.