[1]刘正佳,刘占仁,王丝丝,等.基于日降雨的沂蒙山区降雨侵蚀力时空变化研究[J].水土保持研究,2012,19(02):34-37.
　LIU Zheng-jia,LIU Zhan-ren,WANG Si-si,et al.Spatiotemporal Variation of Rrainfall Erosivity in Yimeng Mountainous Area Based on Daily Rainfall[J].Research of Soil and Water Conservation,2012,19(02):34-37.
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基于日降雨的沂蒙山区降雨侵蚀力时空变化研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 19 期数: 2012年02期 页码: 34-37 栏目: 出版日期: 2012-04-20
Title:
Spatiotemporal Variation of Rrainfall Erosivity in Yimeng Mountainous Area Based on Daily Rainfall
作者:
刘正佳1,2, 刘占仁2, 王丝丝3, 于兴修2
1. 山东师范大学, 人口·资源与环境学院, 济南 250014;
2. 临沂大学, 山东省水土保持与环境保育重点实验室/水土保持与环境, 保育研究所, 山东 临沂276005;
3. 香港中文大学, 地理与资源管理学系, 香港
Author(s):
LIU Zheng-jia1,2, LIU Zhan-ren2, WANG Si-si3, YU Xing-xiu2
1. College of Population, Resources and Environment, Shandong Normal University, Ji’nan 250014, China;
2. Shandong Province Key Laboratory of Soil & Water Conservation and Environment Protection/Institute of Soil & Water Conservation and Environment Protection, Linyi University, Linyi, Shandong 276005, China;
3. Department of Geography and Resources Management,the Chinese University of Hong Kong, Hongkong, China
关键词:
日降雨; 降雨侵蚀力; 沂蒙山区; 时空变化
Keywords:
daily rainfall; rainfall erosivity; Yimeng mountainous area; spatiotemporal variation
分类号:
S157.1
摘要:
降雨侵蚀力是水土流失最为重要的外部驱动力，是土壤侵蚀相关领域的研究重点。以沂蒙山区及周边38个气象台站1971—2008年逐日降雨量资料为数据源，利用基于日降雨信息的月降雨侵蚀力模型，估算了研究区多年月、年降雨侵蚀力，并初步分析了降雨侵蚀力的时空分布规律。结果表明：沂蒙山区降雨侵蚀力总体趋势为西北、中南高，北部低，泗水县、曲阜市东部一带是研究区降雨侵蚀力的高值中心；R值与年降雨量和年侵蚀性降雨量的年际变化趋势基本一致，但也有部分异常年份；沂蒙山区降雨侵蚀力年内主要集中分布在6—9月份，占全年的97.07%，其中最大月降雨侵蚀力出现在7月份，占年降雨侵蚀力的51%。研究结果可为该区域水土流失预报、农业面源污染状况预报等提供理论依据。
Abstract:
Rainfall erosivity is the most important external driving force of soil and water loss,and it is the key field of the soil erosion.In order to estimate rainfall erosivity accurately and analyze the spatial distribution and temporal change of rainfall erosivity,a monthly rainfall erosivity model was adopted to calculate the rainfall erosivity in Yimeng mountainous area by using daily rainfall data from 38 stations during 1971—2008.The results show that the spatial distribution of R value in Yimeng mountainous area is higher in the northwest and south central,but lower in north.Sishui County and east area of Qufu City is the high value in the study area.The interannual variability trend of R value is the same as the trend annual rainfall and aggressive rainfall,but there are also some abnormal years.Rainfall erosivity in Yimeng mountain area is distributed mainly from June to September,accounting for 97.07% of all year.The highest R value appears in July,accounting for 51% of the annual rainfall erosivity.The result could provide theoretical basis for forecast of the soil and water loss and agricultural non-point source pollution condition.

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备注/Memo

收稿日期:2011-8-26;改回日期:2011-9-9。
基金项目:山东省科技攻关项目(2009GG10006015);临沂市重大科技创新项目(201011019);水利部淮委科技项目(SBJ2010003)
作者简介:刘正佳（1986- ）,男（回族）,山东青州人,在读硕士生,主要从事水土流失过程和机理研究。E-mail:lzj7sdjn@126.com
通讯作者:刘占仁（1965- ）,男,山东乳山人,副教授,主要从事水土保持研究工作。E-mail:Liuzhanren@lyu.e

更新日期/Last Update: 1900-01-01