模擬降雨下土壤前期含水量對土壤可蝕性的影響-資料下載頁
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【正文】 OYIN A Y, NWOSU E O. Slope, antecedent moisture and rill influences on soil erosion in Southeastern Nigeria[J]. Discovery and Innovation, 1997, 9 (34), 205212.[16] SHIU H L. Effect of antecedent soil moisture content on rainwash erosion[J]. CATENA, 1985, 12(1): 129139. [17] 史學正, 于東升, 呂喜璽．用人工模擬降雨儀研究我國亞熱帶土壤的可蝕性[J]．水土保持學報, 1995,9(3): 3842.Shi Xuezheng, Yu Dongsheng, Lu Xixi. Study on Soil Erodibility by Using Rainfall Simulator in Subtropic China[J]. Journal of Soil and Water Conservation. 1995, 9(3): 3842. [18] 史學正, 于東升, 刑廷炎等. 用田間實測法研究我國亞熱帶土壤的可蝕性K值[J]. 土壤學報, 1997, 34(4): 399405.Shi Xuezheng, Yu Dongsheng, Xing Tingyan et al. Soil Erodibility Factor K as Studied Using Field Plots in Subtropical China. ACTA PEDOLOGICA AINICA, 1997, 34(4): 399405.[19] 于東升, 史學正, 梁音等. 應用不同人工摸擬降雨方式對土壤可蝕性K值的研究[J]. 土壤侵蝕與水土保持學報, 1997, 3(2): 5357. Yu Dongsheng, Shi Xuezheng, Liang Yin et al. Study on Soil Erodibility Factor K with Deferent Simuluation Rainfall Methods[J]. Journal of Soil Erosion and Soil and Water Conservatiion. 1997, 3(2): 5357.Effect of antecedent soil moisture on soil erodibility using simulation rainfallLiu Zhenbo, Shi Xuezheng, Yu Dongsheng, Wang Hongjie, Zhang XiangyanState Key Laboratory of Soil and Sustainable Agriculture//Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, ChinaAbstract: Antecedent soil moisture content is a very important factor leading to soil erodibility dynamic change. 42 artificial simulated rainfall experiments were conducted in 14 soil erodibility plots with different soil types in South China, and the impact of three antecedent soil moisture levels (dry, dampish, wet) on soil erodibility K value were studied as well. The results showed that soil erodibility K value was affected by antecedent soil moisture content. Also, the change pattern of soil erodibility K value varied with different soil types. For the same soil type, the highest value was 16 times greater than the lowest value within the range of antecedent soil moisture content. For the different soil types, different pattern of soil erodibility K value was found with the change of antecedent soil moisture content. The change trend of soil erodibility K value was sorted into three types: Firstly, the soil erodibility factor K values for nine soil types would be going up with the increase of the antecedent soil moisture content。 Secondly, the change trend of soil erodibility K values for four soil types presented inverse “U” shape with the change of antecedent soil moisture content。 Thirdly, the soil erodibility factor K values for one kind of soil would be going down with the decrease of the antecedent soil moisture content.Key words: soil erodibility。 K value。 antecedent soil moisture。 artificial simulated rainfall
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