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文摘
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利用不同时期出山地表水资源和相应的地下水均衡计算结果，分析对比了近5年来河西走廊地下水资源变化特征，结果表明，自20世纪50年代以来，出山地表水资源年际变化相对比较稳定，与此同时，随着中游地区工农业生产的持续发展和水利化程度的日臻完善，地下水补给量逐步减少，由1955年的62．413×10^8m^3减少到1999年的55．514×10^8m^3，减少了6．899×10^8m^3.由此引起了区域性地下水位持续下降，泉水资源大幅度削减，地下水开采规模和开采量逐年扩大，进入下游的地表水不断减少，水质恶化等水文地质问题，伴随着水资源利用分布格局的改变，河西走廊生态环境体系不断学并趋于恶化。 |
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其他语种文摘
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The changing features of groundwater resources in recent 50 years have been analysed and compared by using calculated results based on surface water from mountain areas and their corresponding groundwater balance during different peirod of time in Hexi Corridor. The result shows that the annual surface water resources from mountains are relative stable, meanwhile the recharges of groundwater are decreasing successively because of industrial and agricultural development and irrigation system in the middle reaches becoming better and approaching perfection day by day since the 1950s. The groundwater recharge decreased from 62.413*10~8 m~3 in 1955 to 55.514*10~8 m~3 in 1999. As a result, a series of hydrogeological problems, such as constant decline of regional groundwater level, substantial reduce of spring water, yearly enlargement both in scale and amount of groundwater extraction, continuous decrease of surface water entering into the lower reaches, water quality worsening and so on. The eco-environmental system tends to change and becomes deteriorated with the changes of water resources in utilization and distribution patterns. |
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来源
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自然资源学报
,2002,17(6):691-697 【核心库】
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关键词
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地下水资源
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生态环境
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河西走廊
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地下水利用
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地下水均衡计算
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地下水补给量
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地址
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甘肃省地质调查院水文地质工程地质调查所, 甘肃, 张掖, 734000
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3037 |
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学科
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地球物理学 |
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基金
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国土资源部中国地质调查局项目
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文献收藏号
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CSCD:1073817
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