| 摘要: |
| 以广州南香山森林的降雨及地表径流作为研究对象,借助测绘技术探究南香山水库的库容变化规律,并反演水库上游森林径流的情况,为该地区实现对水源的调蓄和净化,满足其工农业及日常生活用水需求提供参考。研究结果表明：(1)南香山全年各月的降雨量分布出现类似双波浪形的变化,波峰出现在5月份和8月份,波谷出现在1月和10月；(2)降雨强度与水库水位上升存在密切关系,强度越大上升速度越快。大暴雨开始后,0-2小时内水库库容增速最大,其后降低,但4-8小时还有一次高峰出现,不过不如0-2小时的增幅大,随后再次降低；(3)降雨量与库容增量存在较明显的线性关系： ,相关系数 ；而地表径流的大小与降雨量没有形成线性的关系,主要与植被类型,土壤水分的饱和度及地形有密切关系。 |
| 关键词: 降雨量 水下地形测量 库容计算 地表径流 |
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| 基金项目:华南农业大学科技项目（5600-H13150） |
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| Application of Surveying and mapping technology in forest hydrology research |
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LIN Guantu,Duan Jie,CHEN Xuanyang and XIE Zhengsheng
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Surveying and Mapping Institute of Nuclear Industry Geological Bureau,Guangdong Province,Dongguan Institute of Forestry Science,Office for Teaching Research Bases,South China Agricultural University
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| Abstract: |
| In order to achieve the regulation and purification of regional water and satisfy water consumption for industry, agriculture and life, we study the rainfall and surface runoff in South Xiangshan forest in Guangzhou. This study explored capacity variation of South Xiangshan reservoir by surveying and mapping technology, and conducted an inversion of forest runoff situation in the upstream of the reservoir. The results showed that: (1) The distribution of rainfall changes similar to the double wave shaped South Xiangshan during all months of the year, peak appeared in May and August, the trough appear in January and October (2) Rainfall intensity had a close relationship with the rise of reservoir water level, the higher intensity, the faster rising rate. Reservoir storage capacity growth rate reached the maximum in the first 2 hours after beginning of the heavy rain, after a decline and up to another lower peak during the 4-8 hours, then decreased again; (3) There was an obvious linear relationship between rainfall and reservoir capacity increment: , .Runoff had no linear relationship with rainfall, but it was closed related to vegetation type, soil moisture and topography; |
| Key words: precipitation underwater terrain survey reservoir capacity calculation surface runoff |
