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- W2155368422 abstract "As an important water resource, rainfall resources play a great role in human's production life and socio-economic development. In this paper, the northern typical city—Xi'an was taken as an example. On the basis of temporal and spatial distribution and utilization of water resources as well as the average annual precipitation statistics during 1999 to 2008 in Xi'an, the theory of rainfall frequency curve Pearson type �� was established, and its economic value was estimated from aspects such as rainfall values, costs decrease and losses reduction. The results are as following. First, according to the city's theory of rainfall frequency curve Pearson type �� , it is obtained that the average annual precipitation for 732.5mm and the total precipitation for 1.89×10 8 m 3 in wet years, the average annual precipitation for 511.8mm and total precipitation for1.32×10 8 m 3 in normal years, the average annual precipitation for 359.6mm and the total precipitation for 0.93×10 8 m 3 in dry years. Second, in wet years, the value of rainfall resource itself is 8.26×10 8 yuan and the decreasing costs of the city's supply is 4.12×10 8 yuan; in normal years, the value of rainfall resource itself is 5.78×10 8 yuan and the decreasing costs of the city's supply is 2.88×10 8 yuan; in dry years, the value of rainfall resource itself is 4.06×10 8 yuan and the decreasing costs of the city's supply is 3.11×10 8 yuan, while the losses caused by water shortage decreased by 0.19×10 8 yuan. In view of the great utilized value of rainfall resources, the paper brings up an approach to use city rainfall effectively from catchments of city buildings, accumulation of City Park, and utilization of agricultural and other aspects, which has practical guiding significance for the exploitation and utilization of rain in future." @default.
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- W2155368422 date "2011-01-01" @default.
- W2155368422 modified "2023-09-27" @default.
- W2155368422 title "A Study on Value Estimation, Collection and Utilization of Rainwater Resources in Cities of Northern China" @default.
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