人工沟渠对流域水文格局的影响研究

人工沟渠是指以排水和灌溉为主要目的的人工挖掘的水道。目前,国内外对人工沟渠的研究主要集中在控制沟渠对农田或斜坡影响的水文过程上,而有关人工沟渠对流域水文格局影响的研究比较少,并且缺乏人工沟渠景观及其所携带污染物管理的研究。在流域的尺度上,从人工沟渠对流域径流、污染物传输和水文连通性的影响三方面,详细阐述了人工沟渠对流域水文格局的影响;并对目前人工沟渠对流域水文格局影响研究中存在的问题进行了讨论,同时指出了需要进一步开展的相关研究工作。

Study on the Influence of the Man-made Ditches on theHydrological Pattern on A Watershed Scale

The man-made ditches drive mainly at the artificial channels that excavated for drainage and irrigation. Up to now, most man-made ditches have been focus on the hydrology processes govern the influence of the ditches on a plot or a hill slope on a field scale. But the study on the influence of the man-made ditches on the hydrological pattern and the corresponding management of the man-made ditches on a watershed scale were rare and only stead-state regimes have been studied so far. The investigations relative to the artificial drainage dealed mainly with the subjects, such as the controls of the man-made ditches on the transport of flow, contaminants and flow connectivity. Finally some problems about the influence of the man-made ditches on the hydrological pattern, the corresponding management of the contaminants and man-made ditches on a watershed scale need to be examined in future.