Decline in regional groundwater level and related environment problems in the head water area of the Yellow River
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摘要: 为研究黄河源区区域地下水位下降与生态环境恶化之间的关系,本文基于野外实测的泉口下移、扇前缘泄出带下移与泄出带低位沼泽湿地萎缩以及局地历次地下水位统测资料,认为引起区域地下水位下降的原因以自然因素为主;人为因素为次,且表现为间接干扰。存在的主要生态环境地质问题主要是加剧了荒漠化和引起黄河源区黄河断流。Abstract: This paper mainly focuses on the relationship between the groundwater head decline and the ecologic environmental deterioration in the head water area of the Yellow River.Field survey of downward shift of the spring vents,discharge belts,shrink of the marsh and monitoring data of regional groundwater level suggest that regional groundwater level decline was mainly attributed to natural factors and human activities.Moreover,human impacts on the groundwater level behave as indirect disturbance.The environmental problems resulted from decline of groundwater level include two aspects: the first one is intensification of regional desertification and the other is the occurrence of zero-flow of the Yellow River in its head water area.
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