Jia Zhiwei,Jiang Zhongshan,Liu Zhi.Study on Relationship Between Rainfall Characteristics and the Loss of Soil and Water[J].Research of Soil and Water Conservation,1990,(02):9-15.
降雨特征与水土流失关系的研究
- Title:
- Study on Relationship Between Rainfall Characteristics and the Loss of Soil and Water
- Keywords:
- Rain fall characteristics; Slope land; Soil and wrater loss
- 摘要:
- 本文基于野外天然降雨定位试验观测资料，对降雨特征值的组合因子与水土流失量之间进行了多元统计相关分析。结果表明：降雨动能与最大30min雨强的组合因子EI30与侵蚀量的关系最为密切；以降雨总量与最大30min雨强的乘积PI30取代EI30，经过检验，指标的精度能满足计算侵蚀量的需要，此指标可在黄土高原地区推广应用；建立了反映降雨径流影响侵蚀的综合数学模型；并指出，径流势能对侵蚀量具有极其重要的影响作用。
- Abstract:
- On the base of data obtained from field experiment plots under natural rain, the relationship between composite factors of rainfall characteristics and soil erosion is studied with statistical analysis methods in this paper.First the soil erosion amount is closely realated to the combination of rainfall energy and maximum 30 minutes rainfall intenstity (EI30), also the more simple index of multiplication of rainfall amount and the maximum 30 minutes rain fall intensity (PI30) can meet the prediction accuracy need for erosion. After the mathematical model of soil erosion reflecting the comprehensive effects of both rainfall and run-off are established, the result also shows that runoff potential energy has a more important effect on soil erosion.
参考文献/References:
1 刘善建:天水站水土流失测验与分析,《科学通报》,1953
2 王万忠:黄土地区降雨特征与土壤流失关系的研究,《水上保持通报》,第4~5期,1983
3 江忠善等:黄上高原土壤流失预报方程中降雨侵蚀力和地形因子的研究,《中国科学院西北水土保持研究所集刊》,第7集,1988
4 陈永宗等著.《黄土高原现代侵蚀与治理》,第80~90页,科学出版社,1988
5 N±W±哈德森著,窦葆璋译:《土壤保持》,第50~52页,科学出版社,1975
6 M±J±柯克比、R±P±C±摩根编著,王礼先等译:《土攘侵蚀》,第28~32页,水利电力出版社,1987
7 中国科学院数学研究所.《常用数理统计方法》,科学出版社,1973
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