Comprehensive assessment of geological environment in the Beijing- Tianjin-Hebei region based on multiple index system

doi:10.13474/j.cnki.11-2246.2022.0016

Abstract

Abstract: Geological environment quality is an important factor affecting regional planning and construction. At present, the single evaluation index system is unable to evaluate the geological environment quality in the multi-geomorphic area reasonably and effectively. In order to study the evaluation method of regional geological environment quality suitable for multiple geomorphologic types, a multi-geological environment quality evaluation system based on two geomorphological types is established. The weight of evaluation indexes are obtained and the evaluation model of geological environment quality is established by using AHP and comprehensive index method. The evaluation of geological environment quality of the Beijing-Tianjin-Hebei urban agglomeration is carried out by means of spatial analysis technology. The results show that the spatial distribution of geological environment quality in Beijing-Tianjin-Hebei region is quite different. The distribution of geological environment quality in plain area is significantly affected by land subsidence, groundwater overexploitation and groundwater pollution. The distribution of geological environment quality in mountainous areas is obviously affected by active faults, topographic conditions and geological hazards. It is concluded that the evaluation of geological environment quality based on the multi-index evaluation system can reduce the interaction between the main evaluation indexes of geological environment quality of different geomorphological types, and the evaluation results can reflect the distribution characteristics of regional geological environment quality more reasonably and accurately.

Key words: Beijing-Tianjin-Hebei urban agglomeration, quality of geo-environment, assessment index system, analytic hierarchy process, comprehensive index method, spatial analysis

CLC Number:

P208

WANG Zhiyi, GUO Xuefei, YU Yang, WANG Na. Comprehensive assessment of geological environment in the Beijing- Tianjin-Hebei region based on multiple index system[J]. Bulletin of Surveying and Mapping, 2022, 0(1): 89-95,104.

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