CAJ | 학술논문

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。
위게시뢰공산토양가식성상황，채용EPIC모형대뢰공산4충삼림류형토양가식성 K치진행고산，동시분석료토양가식성 K 치적영향인소。결과표명：4충삼림류형토양가식성 K 치적변화범위위0．278～0．303，K치적변이계수균소우10％，공간변이성위약변이성；4충삼림류형토양가식성 K치대소순서위교목림＞교관과도림＞관목림≈마미송림；양방파도재17°～31°，파도여토양가식성K치적Pearson상관계수위0．017，선성상관불밀절；생물결피가증가토양유궤질함량、분사함량，당생물결피체도60％시가강저토양가식성K치；EPIC모형지표적상관분석표명，가식성 K치여사립함량정겁현저부상관，여분사함량정겁현저정상관，여점립함량정현저정상관，여유궤탄함량상관성불현저。
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≈Pinusmassoniana forest.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.