Study On Urban Plan Strategy Of Urban Hydrologic Effect

With the rapid pace of urbanization, water safety issues have been floating to thesurface and being more severe. Even with various engineering measures taken by thecity, it still fell into the the vicious circle of “expanding extension-never stretched”.The previous studies show the root cause of floods, water pollution and other issues isthat disturbance of urban construction is beyond the limit of hydrological circleself-regulation, to make the hydrological function degenerated. Through themultidisciplinary, this paper researches the city hydrological effects, introduceecology concept of hydrological cycle health into the field of urban planning, whichmake important practical significance of current development situation in China.To realize the health of hydrologic cycle, this article analyses concrete behaviorsdisturbed hydrological cycle from urban construction, including isolating rainfallinfiltration underlying surface, breaking hydrological environment landscape pattern,changing the natural catchment and destroying hydrology self-regulating ability. Asobserved from this study, expanding countermeasures depending on cities as anisolated point ignores external costs of the hydrological effects, separates the rivers’catchment boundaries. Hence this article’s research objects defined in watershed andurban catchment areas, instead of traditional idea of socio-economic units based onadministrative boundaries. This corresponds to regional planning and urban planningin space, stress the overall correlation of hydrological environment, catchmentboundaries and other characteristics of natural attributes, makes relationshipcoupling between urban construction and hydrological environment.On this basis, expand countermeasures to urban hydrology effects from followingfive aspects, valley, urban catchment, specific hydrological environment regional andsupporting projects, management. Achieve healthy hydrological cycle and sustainableurban developments. Select cases of different scales for further analysis andexplanation.