| The rainwater is a good resource, in many developed countries, there is a perfect theoretical system and technical practice to recycle rainwater. It achieved remarkable results on protecting and beautifying the environment, saving resources,flood control and disaster mitigation, etc. Our country has made a variety of attempts in the use of rainwater. At the beginning, its main purpose is to solve the problem of drinking water and irrigation in arid regions. In recent years, the construction of urban green space also gradually begin to use rainwater. General secretary Xi Jinping put forward that to construct the "natural reservoir, natural infiltration and natural purification of the sponge city."Henan province water resources per capita is lower than the national average.And rainfall concentrated in the summer, other seasons drier. Because of the urbanization, it also appeared the phenomenon of the coexistence of drought and waterlogging. So it is very necessary to carry out rainwater utilization. Henan hilly area accounts for 44.3% of the province area. So many city parks are built on mountainous terrain. The slope of the mountain park is large, which leads to the fast runoff, the soil erosion is serious, and the ecological environment is fragile. However,the mountain park is a good place for leisure and fitness, if we can combine the mountain park construction and rainwater utilization, we will both solve the problems existing in the mountain parks, save resources and beautify the environment.Therefore, this paper studies in the city mountain park rainwater ecological utilization in Henan province.This paper firstly analyzes he topography, geological soil, vegetation condition,climate characteristics, water resources situation, rainwater utilization status and problems, characteristics of mountain parks, advantages and significance of rainwater utilization in Henan province. It is very necessary to construct the rainwater utilization measures in the city mountain park of Henan province. Secondly, it proposed the planning principles of rainwater utilization, include according to local conditions, taking into account the overall layout, protecting area original, limiting impervious area. And the rainwater utilization is divided into three systems, includingthe rainwater infiltration and retention, rainwater filtration and purification, rainwater storage. And then divide the mountain area into three areas, including Taihang Mountains Hilly area, Western Henan Loess Hilly Area, Tongbai mountain-Dabie Mountain Hilly area. Select and analyze the representative cities in each region.Summarize the suitable rainwater utilization measures in this area. Finally take the Qingping Mountain park in Xinmi city as the actual case, introducing the measures and effects of rainwater utilization in the park, analyze the economic, environmental and social benefits, and put forward suggestions for improvement.This paper studies rainwater utilization of city mountain park in Henan Province,hope to provide valuable reference for the designers in there work. |
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