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当前位置: 首页 > 文章 > 应用137Cs示踪法估算淮北土石山区土壤可蚀性因子K值 东北林业大学学报 2019 (6) 31-39
Position: Home > Articles > 应用137Cs示踪法估算淮北土石山区土壤可蚀性因子K值 Journal of Northeast Forestry University 2019 (6) 31-39

应用137Cs示踪法估算淮北土石山区土壤可蚀性因子K值

作  者：
李肖;唐鹏;林杰;张阳;朱茜;曾广偌;刘创
关键词：
土壤侵蚀;土壤可蚀性因子(K值);EPIC;137Cs示踪法
摘  要：
选取淮北土石山区-赣榆区为研究区,通过径流小区法和137Cs核素示踪技术修订EPIC模型,并利用克里金插值技术获取赣榆区土壤可蚀性因子(K值)的空间分布图.结果表明:EPIC模型不能直接应用于淮北土石山区K值的估算,估算值在耕地上波动较大;修订EPIC模型估算K值与实测K值的相对偏差为5.4%,精度较高,适用于淮北土石山区K值的估算;赣榆区K值主要分布在0.032~0.041 t·h·MJ-1·mm-1.4种土类K值平均值:棕壤类为0.034 t·h·MJ-1·mm-1,潮土类为0.037 t·h·MJ-1·mm-1,砂姜黑土类为0.037 t·h·MJ-1·mm-1,盐土类为0.039 t·h·MJ-1·mm-1.
作  者：
Li Xiao;Tang Peng;Lin Jie;Zhang Yang;Zhu Xi;Zeng Guangnuo;Liu Chuang;Nanjing Forestry University;Ji'an Forestry Research Institute,Jiangxi Province;
单  位：
Li Xiao%Tang Peng%Lin Jie%Zhang Yang%Zhu Xi%Zeng Guangnuo%Liu Chuang%Nanjing Forestry University%Ji'an Forestry Research Institute,Jiangxi Province
关键词：
Soil erosion;;Soil erodibility factor K;;EPIC;;~(137)Cs nuclide tracing
摘  要：
The Huaibei Rocky Mountain area-Ganyu district was chosen as the study area to revise the EPIC model by runoff plot method and ~(137)Cs nuclide tracing technique and to obtain the spatial distribution map of K value in Ganyu district by Kriging interpolation technique. The EPIC model cannot be directly applied to the estimation of the K value of soil erodibility in the Huaibei Rocky Mountain area, and the estimated value fluctuates greatly on cultivated land. The relative deviation between the estimated K value and the measured K value of the revised EPIC model is 5.4%, and the accuracy is high, which is suitable for the estimation of the K value of soil erodibility in rocky mountain area of northern Huai River. K value of Ganyu district is mainly between 0.032 and 0.041 t·h·MJ~(-1)·mm~(-1), and the average K values of soil erodibility of four soil types are, 0.034, 0.037, 0.037 and 0.039 t·h·MJ~(-1)·mm~(-1) for the brown soil type, the fluvo aquic soil type, the black soil of the sandy soil type, and the saline soil type, respectively.

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