CHEN Fu,LIANG Wei,ZHAO Ting-ning,et al.Study on Rainfall and Erosion in Hilly and Gully Regions on the Loess Plateau——A Case Study in Chaigou Watershed in Wuqi County, ShaanXi Province[J].Research of Soil and Water Conservation,2007,14(05):118-120.
黄土丘陵沟壑区降水侵蚀影响研究——以陕西吴旗县柴沟流域为例
- Title:
- Study on Rainfall and Erosion in Hilly and Gully Regions on the Loess Plateau——A Case Study in Chaigou Watershed in Wuqi County, ShaanXi Province
- Keywords:
- loess hilly and gully area; rainfall; erosion; rainfall erosivity
- 分类号:
- S157.1
- 摘要:
- 根据吴旗县20 a的降雨资料及试验区自记雨量计长期定位观测资料，分析了黄土丘陵沟壑区的降水侵蚀。研究结果表明，多年平均年降雨量为451.77 mm；多年平均降雨侵蚀力R为197.87 （J·cm）/（m2·h）；当降雨量大于10 mm时就会引起侵蚀，当降雨强度为大于10 mm/min的暴雨时，会造成极为严重侵蚀。因此，防止暴雨侵蚀是防治水土流失的关键。
- Abstract:
- This study analyzes the erosion of the loess hilly and gully area according to materials about the rainfall of Wuqi county in 20 years and the long-term location observing data recorded by the auto-recording pluvioscope in the experimental area.The research indicates that the annual rainfall on average is 451.77 mm;the annual rainfall erosivity R on average is 197.87 (J·cm)/(m2·h);the erosion will happen when the rainfall is over 10 mm;rainfall intensity of over 10 mm/ min will lead to more serious erosion.As a result,preventing from the rainstorm erosion is our key to control water and soil loss.
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备注/Memo
收稿日期:2006-3-7。
基金项目:“长江上游、黄河中上游退耕还林（草）国家林业局领导科技示范点工程”项目资助
作者简介:程复（1981- ），男，硕士.主要研究方向：水土保持与荒漠化防治。