| 黄土峁坡侵蚀的137Cs法研究 |
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| 引用本文： | 汪阳春,张信宝,李少龙,赵庆昌,蒋锦江,张一云,严美琼,吴丽萍. 黄土峁坡侵蚀的137Cs法研究[J]. 水土保持通报, 1991, 11(3): 34-37 |
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| 作者姓名： | 汪阳春 张信宝 李少龙 赵庆昌 蒋锦江 张一云 严美琼 吴丽萍 |
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| 作者单位： | 中国科学院水利部成都山地灾害与环境研究所 四川成都;中国科学院水利部成都山地灾害与环境研究所 四川成都;中国科学院水利部成都山地灾害与环境研究所 四川成都;四川大学 成都市;四川大学 成都市;四川大学 成都市;四川大学 成都市;四川大学 成都市 |
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| 基金项目： | 中科院西安黄土室与国家自然科学基金 |
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| 摘 要： | 本文运用137Cs法,对陕北峁坡耕地的土壤侵蚀与泥沙运移进行了研究,定量地分析了峁坡侵蚀的特征,指出峁坡侵蚀存在由上往下呈强烈、减弱,再强烈、再减弱的波动。并利用非农耕地和农耕地土壤侵蚀公式,计算了峁顶非农耕地自1963年以来的侵蚀模数为1068t/（km2·a）;农耕地的侵蚀模数为4059t/（km2·a）。并与径流试验场实测的梁峁坡坡耕地侵蚀模数进行了对比分析。
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| 关 键 词： | 土壤侵蚀 坡耕地 ^137Cs法 黄土 |
A Study on 137Cs method Used in Controlling Erosion on the Loess Mao (round Loess mound) and Slopes |
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| Wang Yangchun,Zhang xinbao,Li Shaolong,Zhao Qingchang,Jiang Jinjiang,Zhang Yiyun,Yan Meiqiong and Wu LiPing. A Study on 137Cs method Used in Controlling Erosion on the Loess Mao (round Loess mound) and Slopes[J]. Bulletin of Soil and Water Conservation, 1991, 11(3): 34-37 |
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| Authors: | Wang Yangchun Zhang xinbao Li Shaolong Zhao Qingchang Jiang Jinjiang Zhang Yiyun Yan Meiqiong Wu LiPing |
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| Affiliation: | Chendu Institute of Mountain Land Disaster and Environment, Academia Sinica, and the Ministry of Water Conservancy, Chengdu, Sichuan;Chendu Institute of Mountain Land Disaster and Environment, Academia Sinica, and the Ministry of Water Conservancy, Chengdu, Sichuan;Chendu Institute of Mountain Land Disaster and Environment, Academia Sinica, and the Ministry of Water Conservancy, Chengdu, Sichuan;Sichuan University, Chendu, Sichuan;Sichuan University, Chendu, Sichuan;Sichuan University, Chendu, Sichuan;Sichuan University, Chendu, Sichuan;Sichuan University, Chendu, Sichuan |
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| Abstract: | 137Cs method was used to study soil erosion and sediment transportation in the farmlands on Mao (round loess mound) and slopes in North Shaanxi in this paper. A quantitative analysis was made of the erosion properties on Mao and slopes. The results indicated that erosion on Mao and slopes appeared to fluctuate very strongly, weakly, and very strongly again, and then weakly from the ups to the downs. Also, erosion equation for non-agricultural lands and agricultural lands has been used to calculate the modulus of erosion in non-agricultural lands on the Mao top since 1963, being 1 068 t/(km2·a), while the modulus of erosion in agricultural lands is 4059 t/(km2·a), Also, a comparative analysis was made of actual determined modulus of erosion of sloping farmlands in the runoff experimental fields on Liang (elongated loess mound) , Mao and slopes. |
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| Keywords: | 137Cs background value modulus of erosion |
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