摘要
以永定河和北运河流域生态涵养区为研究区,从水、土、矿产开采和灾害情况4个方面,选取地下水环境污染敏感性、土壤肥力、矿产开采对地质环境的影响等5项一级评价指标和包气带厚度、岩性、年降雨量等23个二级评价指标,采用相应评价方法分别进行单指标和综合质量评价。结果表明,研究区地质环境质量以良好为主,良好区面积占研究区总面积的60.8%,从北向南均有分布,总体呈现北部优、南部差的特征。良好区主要特征是地下水污染敏感性较高,土壤养分水平中等,矿产开采对地质环境质量基本无影响。
Taking the ecological conservation area of Yongding River and Beihe River basins as the research area,five first-level evaluation indexes such as groundwater environmental pollution sensitivity,soil fertility and impact of mineral exploitation on geological environment and 23 second-level evaluation indexes such as thickness,lithology and annual rainfall were selected from four aspects:water,soil,mineral exploitation and disaster situation.Single-index and comprehensive quality evaluation were conducted using corresponding evaluation methods.Results show that the geological environment quality of the study area is generally good,with good-quality regions distributed in a north-south pattern,accounting for 60.8%of the total area(showing a spatial differentiation pattern of"better in the north and worse in the south").Good-quality regions are characterized by high sensitivity to groundwater pollution,moderate soil nutrient levels,and minimal to no impact of mineral exploitation on geological environment quality.
作者
李启云
王秋月
张群
郑直
安永龙
关伟
程亮
LI Qiyun;WANG Qiuyue;ZHANG Qun;ZHENG Zhi;AN Yonglong;GUAN Wei;CHENG Liang(Beijing Institute of Ecological Geology,Beijing 100120,China;Beijing Institute of Geology,Beijing 100195,China)
出处
《城市地质》
2025年第4期535-542,共8页
Urban Geology
基金
北京政府公益性项目“北京生态涵养区地质环境综合调查”(PXM2020_158307_000005)资助。
关键词
生态涵养区
地质环境质量综合评价
永定河和北运河流域
ecological conservation area
comprehensive evaluation of geological environment quality
Yongding River and North Canal basins
