摘要
通过分析城市化作用下各水循环要素的变化规律,揭示了其影响因素及驱动机制,并讨论了城市化对各水循环要素的影响程度以及城市化水循环效应的时空变化特征。结果认为:(1)在城区尺度上,城市化对水循环过程的影响显著,然而在大区域或流域尺度上,水循环过程仍然受气候背景及自然地理条件控制;(2)城市化作用下的降水具有区域特征,丰水地区城市的增雨效应明显,而干旱地区城市则仅在汛期时表现出增雨效应。
Based on the changing laws of all the key elements of water cycle under the impact of the urbanization, the relevant impact factor and the drive mechanism are revealed, and then the degree of the impact from the urbanization on all the key elements of water cycle and the characteristics of the temporal and spatial change of water cycle from the urbanization are discussed herein. The result considers that 1. On the scale of the urban area, the impact of urbanization on water cycle is sig- nificant; however, the water cycle is still under the control of climate background and natural geographical condition on a larger regional or basin scale. 2. The precipitation under the urbanization has regional characteristics with a significant rainfall increasing effect in the cities within a water-rich region, while the effect can only occur in flood season for the cities within the arid region.
出处
《水利水电技术》
CSCD
北大核心
2011年第11期6-9,共4页
Water Resources and Hydropower Engineering
基金
国家重点基础研究发展计划(2010CB951100)
关键词
城市化
区域水循环
驱动机制
降水
径流
蒸散发
地下水
urbanization
regional water cycle
drive mechanism
precipitation
runoff
evapotranspiration
groundwater
