Effects of urbanization on water resource development and its problems in Shijiazhuang, China
Effects of urbanization on water resource development and its problems in Shijiazhuang, China
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发表时间：
2005
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通讯作者：
Shen;Yj;Tang;Xiao;Jy;Oki;Kanae
中科院分区：
文献类型：
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作者：
Shen;Yj;Tang;Xiao;Jy;Oki;Kanae
人为活动是改变水文循环和气候的主要力量。评估人类活动对水文环境的影响正成为一个广泛关注的话题。以石家庄地区为例，分析了城市化、农业发展以及随之而来的水资源开发利用对水环境的影响，并评价了人类活动对区域水循环和水质的影响。石家庄城市扩展的发展分为四个时期。根据历史记载，地下水位较浅。在1950年代以前，大部分地区的水深不超过1-3米。20世纪70年代以后，地下水开采量的增加开始导致地下水位以1 - 1.5m年-1的速度下降。因此，水文系统自那时以来发生了很大变化。为了探讨地下水的补给和排泄机制，在研究区的主要部分进行了不同季节的地下水采样。结果表明，该区地下水除接受来自山脉的侧向补给外，还接受沿着河流的侧向补给。然而，沿着滹沱河氚的空间分布表明，地下水很少接受垂直补给，因为河流干涸。
Anthropogenic activities are of a major force in changing the hydrological cycle as well as the climate. Assessing the impacts of human activities on hydrological environments is becoming a wide-focused topic. In this research, the authors attempt to link the urbanization, agricultural development, and the subsequent water resources exploitation with the change of water environments in Shijiazhuang region, China, and evaluate the impacts of human activities on the regional hydrological cycle and water quality. The development of the urban expansion of Shijiazhuang is divided into four periods. According to the historical records, the depth of the water table was shallow. Over the greater part of the area it did not exceed 1-3 m depth before the 1950s. After the 1970s, the increase of groundwater pumping began to result in the fall of the groundwater level at a rate of 1 to 1.5 m year -1 . As a result, the hydrological system has changed greatly since then. In order to explore the recharge and discharge mechanism, groundwater sampling in different seasons was conducted across the major part of the study area. It is shown that the groundwater accepted lateral recharge along the rivers besides the lateral recharge from the mountain range. However, the spatial distribution of tritium along the Hutuo River suggests that groundwater has seldom accepted vertical recharge since the river dried-up.