人民黄河
人民黃河
인민황하
Yellow River
2015年
10期
89-91,98
,共4页
降雨%产流%土壤侵蚀%黄土丘陵沟壑区%安家坡小流域
降雨%產流%土壤侵蝕%黃土丘陵溝壑區%安傢坡小流域
강우%산류%토양침식%황토구릉구학구%안가파소류역
rainfall%runoff yield%soil erosion%gullied rolling loess area%Anjiapo small watershed
基于2009—2012年安家坡小流域4个农田径流小区27场侵蚀性降雨的数据资料，分析了黄土丘陵沟壑区降雨产流与土壤侵蚀的关系。结果表明：相同降雨条件下坡耕地降雨产流、土壤侵蚀与坡度成正比；汛期侵蚀性降雨的分布极不均衡，表现出明显的单峰分布特征。造成黄土丘陵沟壑区坡耕地水土流失的产流性雨量级别以大雨为主，其中7月的侵蚀性降雨量最大，成为土壤侵蚀防治的最关键时期。
基于2009—2012年安傢坡小流域4箇農田徑流小區27場侵蝕性降雨的數據資料，分析瞭黃土丘陵溝壑區降雨產流與土壤侵蝕的關繫。結果錶明：相同降雨條件下坡耕地降雨產流、土壤侵蝕與坡度成正比；汛期侵蝕性降雨的分佈極不均衡，錶現齣明顯的單峰分佈特徵。造成黃土丘陵溝壑區坡耕地水土流失的產流性雨量級彆以大雨為主，其中7月的侵蝕性降雨量最大，成為土壤侵蝕防治的最關鍵時期。
기우2009—2012년안가파소류역4개농전경류소구27장침식성강우적수거자료，분석료황토구릉구학구강우산류여토양침식적관계。결과표명：상동강우조건하파경지강우산류、토양침식여파도성정비；신기침식성강우적분포겁불균형，표현출명현적단봉분포특정。조성황토구릉구학구파경지수토류실적산류성우량급별이대우위주，기중7월적침식성강우량최대，성위토양침식방치적최관건시기。
Based on the data of 27 erosive rainfalls from 2009 to 2012 of four farmland runoff plots in Anjiapo small watershed,this paper analyzed the relationship characteristics of the rainfall runoff and the soil erosion in gullied rolling loess area. The results show that rainfall runoff and soil erosion of cultivated land are proportional to the gradient variables under the same rainfall conditions. The erosive rainfall distributions are extremely uneven and show obvious distribution characteristics of one-peak in flood seasons. Leading to the soil and water loss of farmland rainfall about the runoff level is heavy rain in gullied rolling loess area. Especially,the erosive rainfall in July is the largest. Therefore,July becomes the most critical period to prevent and control the soil erosion of farmland in the gullied rolling loess area.
