摘要
简要介绍了人类工程活动；人工开垦水田、建造水坝和超采地下水为大连市供水。导致生态环境一系列演变，从自然生态系统变为人工生态系统，同时导致了次生地质灾害；海水倒灌入侵，污染地下水源。引起了Cl^-浓度从50mg／L上升到250-500mg／L。最高可达1000mg／L．超过国家标准；土地沙化和产生的流动沙丘。它们危害农业生产和农舍。
The paper takes Qidingshan area of Jinzhou district, DaLian City for example. The facts that the engineering activities and paddy fields, building reservoir on old Sanshilipu river, and excessive extracting the groundwater for Dalian City, lead to a series of eco-environment evolutions; natural humid ecosystem→man-made paddy field ecosystem→man-made dry farmland ecosystem→man-made vegetable garden ecosystem. These initiated secondary geological disasters： The sea water flooding back to the lands caused the groundwater polluted; Cl^- concentration from 50 mg/L rises to 250-500 mg/L with the highest 1 000mg/ L, much higher than the national standard. Built reservoir incurs downstream and delta area to dry up, the land desertification, and dunes to move with the strong wind blowing from the sea. They are endangered agricultural produces and safety of the farmhouses.
出处
《地质灾害与环境保护》
2006年第1期21-25,共5页
Journal of Geological Hazards and Environment Preservation
关键词
大连金州区
人类工程活动
生态环境演变
次生地质灾害
Jinzhou district
engineering activities
ecoenvironmental evolution
geological calamities
