珠江三角洲环境地质分区及其特征

The geological environment zoning and character in Pearl River delta

本文依据珠江三角洲的地质环境及气候条件,结合地质环境质量及已知的主要地质灾害类型的组合和灾害的发育程度,建立数学模型,综合考虑环境质量及地质灾害分布的共同影响,对珠江三角洲的环境地质进行分区评价,把珠江三角洲划分为Ⅰ.西部山地丘陵中灾害、地质环境质量良好区、Ⅱ.东北部平原丘陵中灾害、地质环境质量中等区、Ⅲ.中部三角洲平原弱灾害、地质环境质量差区和Ⅳ.南部丘陵重灾害、地质环境质量中等区四个区,并对每个分区的环境地质特征进行了阐述,为珠江三角洲的环境地质问题的预测和治理、合理开发和利用资源,对地质灾害的预报和预防以及社会经济发展提供服务。

This paper discusses the problems of geological environments and climate conditions in Pearl River delta. The quality of environments and distribution of the geological calamities are andalyzed detailed and synthetically. According to that, the paper builds up a mathematical model. The geological environment zones are established with the aid of the model. Pearl River delta is divided into four zones. Then the paper elaborates all the divided zones'geological environment character. Basing on that, it can provide service for forecasting problems of geological environment and bringing the problem under control in Pearl River delta.