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当前位置: 首页 > 文章 > 雷公山4种森林类型的土壤可蚀性K值及影响因素 贵州农业科学 2014 (7) 72-75+80
Position: Home > Articles > Soil Erodibility K-Factor and Its Influencing Factors of Four Forest Types in Leigong Mountain Guizhou Agricultural Sciences 2014 (7) 72-75+80

雷公山4种森林类型的土壤可蚀性K值及影响因素

作  者：
吴小波;王震洪;何建敏;曹荣权
单  位：
贵州大学生命科学学院;贵州大学林学院
关键词：
土壤可蚀性K值;雷公山;森林类型;坡度;生物结皮;EPIC模型
摘  要：
为揭示雷公山土壤可蚀性状况,采用EPIC模型对雷公山4种森林类型土壤可蚀性K值进行估算,同时分析了土壤可蚀性K值的影响因素。结果表明:4种森林类型土壤可蚀性K值的变化范围为0.278~0.303,K值的变异系数均小于10%,空间变异性为弱变异性;4种森林类型土壤可蚀性K值大小顺序为乔木林>乔灌过渡林>灌木林≈马尾松林;样方坡度在17°~31°,坡度与土壤可蚀性K值的Pearson相关系数为0.017,线性相关不密切;生物结皮可增加土壤有机质含量、粉砂含量,当生物结皮达到60%时可降低土壤可蚀性K值;EPIC模型指标的相关分析表明,可蚀性K值与砂粒含量呈极显著负相关,与粉砂含量呈极显著正相关,与粘粒含量呈显著正相关,与有机碳含量相关性不显著。
译  名：
Soil Erodibility K-Factor and Its Influencing Factors of Four Forest Types in Leigong Mountain
作  者：
WU Xiaobo;WANG Zhenhong;HE Jianmin;CAO Rongquan;Forestry College,Guizhou University;College of Life Sciences,Guizhou University;
关键词：
soil erodibility(K-factor);;Leigong Moutain;;forest type;;slope;;biological crust;;EPIC model
摘  要：
In order to reveal the condition of the soil erodibility in Leigong Moutain,EPIC model was used to estimate the soil erodibility(K-factor)of four forest types in Leigong Moutain,and the influencing factors of soil erodibility was also analyzed.Results:The spatial variability of soil erodibility(k-factor)of those four forest types was relatively weak,with the range from 0.278 to 0.303,and the variance coefficient was less than 10%.The size of soil erodibility(K-factor)of those four forest types presented the order:Arbor land>shrub-tree transitional forest>shrub land≈Pinus massonianaforest.The range of slope was 17~31°,the Pearson correlation coefficient of slope with soil erodibility(k-factor)was 0.017,but the linear correlation of slope with soil erodibility(k-factor)was not close.Biological crust could increase soil organic matter content and soil silts contents,when biological crust reached 60%,it could also reduce soil erodibility(K-factor).The Pearson correlations of the indicators of EPIC model showed that the correlation of soil erodibility(K-factor)with sand contents was obviously negative,but which showed positive with silts contents and clay contents.Correlation of K-factor with organic carbon content was not significant.

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