小流域尺度生态地质环境评价方法探讨  

Discussion on Evaluation Methods of Eco-geological Environment at Small Watershed Scale

作　　者：翟延亮 ZHAI Yan-liang(The 4th Geological Team of Hebei Geology and Mining Bureau(Water Source Conservation Research Center of Hebei Province),Chengde 067000,China)

机构地区：[1]河北省地质矿产勘查开发局第四地质大队(河北省水源涵养研究中心),河北承德067000

出　　处：《河北地质大学学报》2023年第6期80-85,共6页Journal of Hebei Geo University

基　　金：河北省重点研发计划资源与环境专项(20374207D)。

摘　　要：为了科学评价小流域生态地质环境,掌握区域生态地质环境现状,以河北省承德市围场县如意河流域为例,通过构建评价指标体系、量化方法和评价模型,基于层次分析法(AHP)和ArcGIS平台对生态地质环境质量进行了评价。结果表明:本次提出针对小流域尺度的评价方法可以较为准确的反映流域内不同区域的生态地质环境状况,评价结果显示如意河流域生态地质环境质量良好区面积175.832 km2,占比84.69%;一般区29.258 km2,占比14.14%,生态地质环境较差区面积2.415 km2,仅占1.17%,生态地质环境状况总体较好。通过本次研究,可为小流域尺度的生态地质环境质量评价提供参考,并可为小流域生态地质环境保护与修复提供科学依据。In order to scientifically evaluate the eco-geological environment of small watersheds and grasp the current situation of regional eco-geological environment,the Ruyi River Basin in Weichang County,Chengde City,Hebei Province was taken as an example.By constructing an evaluation index system,quantitative methods,and evaluation models,the quality of eco-geological environment was evaluated based on Analytic Hierarchy Process(AHP)and ArcGIS platform.The results indicate that the proposed evaluation method for small watershed scales can accurately reflect the eco-geological environment conditions of different regions within the watershed.The evaluation results show that the area of the Ruyi River Basin with good eco-geological environment quality is 175.832 km2,accounting for 84.69%;The general area is 29.258 km2,accounting for 14.14%,while the area with poor eco-geological environment is 2.415 km2,accounting for only 1.17%.The overall eco-geological environment is in good condition.Through this study,reference can be provided for the evaluation of eco-geological environment quality at the scale of small watersheds,and scientific basis can be provided for the protection and restoration of eco-geological environment in small watersheds.

关 键 词：生态地质环境 小流域 评价方法 

分 类 号：X141[环境科学与工程—环境科学]