| 昭平台水库上游区域降雨侵蚀力时空变化特征 |
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| 引用本文： | 胡续礼,姜小三,尹黎明,杨树江,潘剑君.昭平台水库上游区域降雨侵蚀力时空变化特征[J].土壤通报,2006,37(6):1195-1198. |
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| 作者姓名： | 胡续礼 姜小三 尹黎明 杨树江 潘剑君 |
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| 作者单位： | 1. 南京农业大学资源环境学院,江苏,南京,210095;淮河流域水土保持监测中心站,安徽,蚌埠,233001
2. 南京农业大学资源环境学院,江苏,南京,210095 |
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| 基金项目： | 水利部淮河委员会资助项目 |
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| 摘 要： | 昭平台水库是淮河上游一座重要的防洪工程,由于库区的水土流失造成的泥沙淤积严重,加强库区水土流失治理与监督监测尤为必要。而降雨侵蚀力的时空分布规律研究则是实现区域土壤侵蚀定量监测预报的重要基础。本文利用昭平台库区上游20年雨量站17年的资料对该区年降雨侵蚀力进行了分析研究,利用中汤代表站次降雨过程资料计算分析了区域降雨侵蚀力的年内分布特征。区内降雨侵蚀力年间变化规律同雨量变化总体趋势相同,并呈现4~5年的变化小周期,空间上从西南至东北逐渐减小,并形成一个高值区和一个低值区;年内R值集中分布于6~8月,占年R值75.4%,同月雨量的分布一样呈单峰型,最大值均出现于8月份。
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| 关 键 词： | 降雨侵蚀力 时空变化 土壤侵蚀 昭平台水库 |
| 文章编号： | 0564-3945(2006)06-1195-04 |
| 修稿时间： | 2005年11月28 |
Temporal and Spatial Variance of Rainfall Erosivity in the Upstream Area of the Zhaopingtai Reservoir |
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| HU Xu-li,JIANG Xiao-san,YIN Li-ming,YANG Shu-jiang,PAN Jian-jun.Temporal and Spatial Variance of Rainfall Erosivity in the Upstream Area of the Zhaopingtai Reservoir[J].Chinese Journal of Soil Science,2006,37(6):1195-1198. |
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| Authors: | HU Xu-li JIANG Xiao-san YIN Li-ming YANG Shu-jiang PAN Jian-jun |
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| Abstract: | Information of rainfall erosivity is fundamental to predict and monitor soil erosion.Based on the rainfall data of 17 years from 20 stations,the temporal and spatial R_value variance in the upstream area of the Zhaopingtai Reservoir was studied.The variance trend of R in the region was similar to the precipitation one with a cycle period of 4~5 years.The spatial distribution of rainfall erosivity showed a decreasing trend from the southwest to the northeast.The seasonal distribution of R value was centralized in June,July and August and the R value was 75.4% of that for the whole year.The biggest monthly R-value appeared in August,when precipitation was consistent. |
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| Keywords: | Rainfall erosivity Temporal and spatial Variance Soil erosion The Zhaopingtai reservoir |
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