首页|Ecological impact assessment method of highways in Tibetan Plateau: A Case study of Gonghe-Yushu Expressway

Ecological impact assessment method of highways in Tibetan Plateau: A Case study of Gonghe-Yushu Expressway

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In recent years,the ecological environment along highways in Tibetan Plateau has been severely affected due to the rapid construction of highways.In order to solve the problems of multiple indicators and inconsistent criteria in the ecological impact assessment of highways,and to scientifically screen assessment indicators,the paper proposes a multi-round indicator screening method,which combines literature analysis,expert rating,and statistical analysis.Based on this screening method,normalized difference vegetation index,land surface temperature,elevation,and normalized difference soil index are screened out.Combined with multiple linear regression,an ecological impact assessment model is established and applied to ecological impact assessment of Gonghe-Yushu Expressway.The results show that the expressway construction is the first driving force for the deterioration of the ecological environment along the roadside,and its interference range on the desert grassland ecosystem is greater than that on the agroforestry system.The ecological environment within 150 m on both sides of the expressway should be protected.

HighwayTibetan PlateauEcological impact assessmentMulti-round indicator screening methodContribution index cyclic analysisMultiple linear regression

YANG Hong-zhi、WANG Zhen-feng、DAI Qing-miao

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School of Highway, Chang'an University, Xi'an 710064, China

China Design Group Co., Ltd., Nanjing 210000, China

This work was supported by the National Natural Science Foundation of China (NSFC)

41801387

2020

山地科学学报(英文版)
中国科学院水利部成都山地灾害与环境研究所

山地科学学报(英文版)

CSTPCDCSCDSCI
影响因子：0.228
ISSN：1672-6316
年,卷(期)：2020.17(8)
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