海南岛东北部地质环境评价  

The Geological Environment Evaluation in Northeastern Hainan Island

作　　者：廖香俊[1] 冯亚生[2] 丁式江[2] 张本仁[1] 徐忠胜[2] 吴丹[2] 

机构地区：[1]中国地质大学地球科学学院,湖北武汉430074 [2]海南省地质矿产勘查开发局,海南海口570206

出　　处：《吉林大学学报（地球科学版）》2005年第5期646-652,共7页Journal of Jilin University：Earth Science Edition

基　　金：中国地质调查局资助项目(20001230006271)

摘　　要：为评价海南岛东北部地区地质环境质量,重点总结了影响地质环境的区域地质、水文地质环境、土壤环境质量及主要地质灾害等主要因素;选取气候、区域地质条件、地质灾害、土壤环境、地下水资源、人类活动、植被条件等7个评价要素和相应的11个评价因子,建立了评价体系和数学模型;采用权重加权平均,对区内地质环境质量进行分区评价。评价结果表明,海南岛东北部地区地质环境质量较好:优级区4 075 km2,占22.3%,分布于火山岩台地、丘陵、剥蚀堆积台地区;良好区9 700 km2,占69.3%,不间断分布于各个地质地貌区;中级区1 225 km2,占8.4%,主要分布于水土流失、土地沙化等地质灾害较严重区。Regional geological, hydrogeological, and soil environment quality ana geologic nazaru and so on are the primary influential factors that affect the geological environment quality in northeastern Hainan island. Seven evaluating key elements and eleven evaluating factors,including the regional climate, geological setting, geologic hazard, soil environment quality, groundwater resource, human activity and vegetation condition, are selected to constitute an evaluating system and a mathematical model on the basis of the weighted average method is employed to valuate the regional geological environment quality in the northeastern Hainan. The evaluating result indicates that the geological environment quality in the northeastern Hainan is statistically good quality. 22.3% of the studied area, up to 4 075 square kilometers, belongs to the high class of quality, including the volcanic mesas, hills, and erosion deposits; and 69.3% of the studied area, up to 9 700 square kilometers, belongs to the good class of quality, continuously distributed at different geological reliefs; while the remaining 8.4 % of the studied area, 1 225 square kilometers, belongs to the middle class quality, mainly distributed in serious geologic hazard area including soil water loss, land desertification etc.

关 键 词：地质环境 评价 权重加权平均法 海南岛 

分 类 号：X141[环境科学与工程—环境科学]