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首页> 外文期刊>Journal of geographical sciences >Impacts of land use changes on groundwater resources in the Heihe River Basin
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Impacts of land use changes on groundwater resources in the Heihe River Basin

机译:黑河流域土地利用变化对地下水资源的影响。

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摘要

Land use and land cover changes have a great impact on the regional hydrological process. Based on three periods of remote sensing data from the 1960s and the long-term observed data of groundwater from the 1980s, the impacts of land use changes on the groundwater system in the middle reach of Heihe River Basin in recent three decades are analyzed by the perspective of groundwater recharge and discharge system. The results indicate that with the different intensities of land use changes, the impacts on the groundwater recharge were 2.602 X 10~8 m~3/a in the former 15 years (1969-1985) and 0.218 X 10~8 m~3/a in the latter 15 years (1986-2000), and the impacts on the groundwater discharge were 2.035 X 10~8 m~3/a and 4.91 X 10~8 m~3/a respectively. When the groundwater exploitation was in a reasonable range less than 3.0 X 10~8 m~3/a, the land use changes could control the changes of regional groundwater resources. Influenced by the land use changes and the large-scale exploitation in the recent decade, the groundwater resources present apparently regional differences in Zhangye region. Realizing the impact of land use changes on groundwater system and the characteristics of spatial-temporal variations of regional groundwater resources would be very important for reasonably utilizing and managing' water and soil resources.
机译:土地利用和土地覆被变化对区域水文过程有很大影响。基于1960年代的三个时期的遥感数据和1980年代的长期观测数据,分析了近30年黑河流域中游土地利用变化对地下水系统的影响。地下水补给和排放系统的角度。结果表明,在土地利用变化强度不同的情况下,前15年(1969-1985年)对地下水补给的影响分别为2.602 X 10〜8 m〜3 / a和0.218 X 10〜8 m〜3 /在随后的15年(1986-2000年)中,a对地下水排放的影响分别为2.035 X 10〜8 m〜3 / a和4.91 X 10〜8 m〜3 / a。当地下水开采量在合理范围内小于3.0×10〜8m〜3 / a时,土地利用变化可以控制区域地下水资源的变化。近十年来,在土地利用变化和大规模开发的影响下,张ye地区的地下水资源呈现明显的区域差异。认识到土地利用变化对地下水系统的影响以及区域地下水资源的时空变化特征,对于合理利用和管理水土资源非常重要。

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