甘肃黄土高原区主要城市雨洪资源利用潜力

Potential of Rainwater Resources Utilization for Main Cities in Loess Plateau of Gansu Province

根据甘肃省黄土高原区城市雨洪资源的分布特征,选取主要城市兰州、定西、平凉、庆阳和天水为研究区,研究了各主要城市降水量特征变化规律,并对各主要城市雨洪资源利用潜力进行了分析计算。结果表明,兰州、定西、平凉、庆阳和天水雨洪资源的平均理论潜力分别为5.71×107,8.61×106,2.38×107,7.62×106和3.21×107 m3,平均可实现潜力分别为2.91×107,4.65×106,1.43×107,4.87×106和1.95×107 m3。计算结果说明,甘肃黄土高原区各主要城市雨洪资源利用潜力相对较大,具有很好的开发利用前景,并且可为黄土高原区城市雨洪资源高效利用和有效管理提供参考依据。

Based on distribution characteristics of urban rainwater resources utilization in the Loess Plateau of Gansu Province, Lanzhou, Dingxi, Pingliang, Qingyang and Tianshui Cities were selected to analyze variable patterns of precipitation characteristics and calculate the potential of urban rainwater resources utilization for the main cities. Results showed that the average theoretical potentials of rainwater resources for Lanzhou, Dingxi, Pingliang, Qingyang and Tianshui Cities were 5.71 X 10^7 , 8.61 X 10^6 , 2.38 X 10^7 , 7.62 X 10^6 and 3.21 X 10^7 m3 , respectively. The average realizable potentials of rainwater resource for Lanzhou, Dingxi, Pingliang, Qingyang and Tianshui Cities were 2.91 X 10^7 , 4.65 X 10^6 , 1.43 X 10^7 , 4.87 X 10^6 and 1.95 X 10^7 m3 , respectively. The results indicates that there is a good prospect in utilization potential and exploitation of urban rainwater resources for the main cities, which provides reference for the effective management and high-e{fective utilization of rainwater resources in the loess plateau.