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Ecological Background Evaluation for Highway Alignment Design
in Yellow River Delta Area
Niu Dongyu , Xu Jinliang , Jia Xingli
2013, 32(6):
1203-1209.
DOI: 10.3969/j.issn.1674-0696.2013.06.24
With ETM images photographed by Landset 7 Satellite as the basic information , the technica1 method of RS was utilized
to extract eva1uation indices of vegetation cover , soil degradation , and land use type , which reflected the conditions of ecologica1
background environments. And with geologica1 information and other statistica1 materia1s as auxiliary information , the ArcGIS software
was utilized to extract eva1uation indices of terrain slope and biodiversity. Based on the above indices , ana1ytica1 technique
of GIS was adopted to ana1yze the ecologica1 background of Yellow River Delta. The results show that the ecologica1 background
environments of the Yellow River Delta can be divided into excellent area , good area , middle area， poor area and very poor area ,
occupying 6% , 33%，41. 4% ，12.3% and 7.3% respectively in the overa11 of Yellow River Delta. Genera11y , the ecologica1
background environment of Yellow River Delta is worsened gradua1ly a10ng the Yellow River to inland areas.
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