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The Watershed Erosion-Sediment Yield and Characteristics of Different Stratum in Water-Wind Erosion Crisscross Region
Authors
唐克丽
张平仓
查轩
Publication date
1 January 1997
Publisher
Abstract
水蚀风蚀交错带土壤侵蚀特征,尤其是不同产沙地层对流域侵蚀产沙量的影响为研究的薄弱环节。以水蚀风蚀交错带六道沟小流域为例,结合4年的观测资料,按地层层位、颗粒组成、岩性特征等将侵蚀产沙地层分为4类,并通过抗冲抗蚀、崩解试验等进行了产沙能力定性分析。在此基础上,运用等粒径对比分析法建立了六道沟小流域不同产沙地层的相对产沙量数学模型,计算得出老黄土3(L3)、老黄土2(L2)、新黄土(L1)、风成沙(S)的相对侵蚀产沙量比例为1∶6.8∶5.4∶4.3,而反映侵蚀产沙能力的侵蚀模数比为1∶1.5∶5.1∶4.0
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018