TITLE:
Spatial Identification of Urban Ecological Function on the North Slope of Qinling Mountains Based on Ecological Sensitivity—A Case Study in Baoji, China
AUTHORS:
Pei Wang, Langong Hou, Xiaoqin He
KEYWORDS:
Baoji City, Coefficient of Variation Method, Ecological Sensitivity, Urban Ecological Function Space
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.9 No.5,
May
28,
2021
ABSTRACT: Since
the 17th National Congress of the Communist Party of China, ecological
civilization has been the key construction goal in China, which has a profound
impact on the process of urbanization. In recent years, with the rapid
development of urbanization and unreasonable land development and utilization,
the ecological environment has deteriorated sharply, and the stability of
ecological environment has always been a difficult problem in the process of
regional development. The spatial division of urban ecological function can be
divided into different types of spatial utilization according to the fragile state
of ecological environment, which not only guarantees urban construction but
also maintains the ecological environment health, and has great economic
benefits and ecological value in formulating regional development strategies
and ecological protection. In this paper, from four perspectives of “land,
water, human and forest”, eight factors affecting ecological sensitivity were
selected, and GIS spatial superposition method was used to conduct qualitative
and quantitative analysis on the ecological sensitivity of Baoji City, and the
evaluation results of single factor ecological sensitivity and comprehensive
ecological sensitivity were obtained. The areas with different ecological
sensitivity are divided into extremely sensitive areas, highly sensitive areas,
moderately sensitive areas, slightly sensitive areas and non-sensitive areas.
The research shows that the proportion of extreme, high, moderate, mild and
insensitive areas in Baoji City is 7.32%, 10.57%, 22.25%, 42.91% and 16.95%
respectively. Finally, the areas with different sensitivity grades are
identified as three types of urban ecological function areas: ecological
conservation area, ecological coordinated moderate utilization area and
ecological suitable construction area, so as to provide scientific theoretical
basis for urban construction and land use optimization in Baoji City.