人类活动胁迫下岩溶含水层脆弱性分析

VULNERABILITY OF KARST AQUIFERS UNDER THE PRESSURE OF HUMAN ACTIVITIES

从水文地质本身的内部要素分析岩溶含水层高度脆弱的原因,详细论述了农业活动、工业和城市化以及矿山开采等对岩溶含水层脆弱性的影响,认为人类活动的叠加无疑加剧了岩溶含水层的脆弱性,并在很大程度上影响着地下水的水质、水量。因此,合理规范人类活动,减少人类活动对环境的污染,是岩溶地下水资源可持续利用的保证。

The fissures and conduits are well developed and interconnected in Karst aquifers due to intensive corrosion. Thus forms 'double-layer structure' in Karst areas. The groundwater moves and stores in subterranean fissures or conduits. Aquifers of Karst areas are more sensitive and vulnerable to imposed stress than those of non-Karst areas. They are easily affected by the conditions of the land surfaces, because limestone soils are typically thin and there are so many fissures, conduits, swallow holes and shafts in Karst areas. The effects of agricultural activities, industrialization, urbanization, and mining activities on the vulnerability of Karst aquifers are analyzed. Karst aquifer usually lacks resilience in the face of such stresses. It is shown that the groundwater has been deteriorating under the pressure of human activities. Therefore, it is necessary and important to reduce the pollution and unreasonable human activities for the sustainable use of karst groundwater.