辽东山区天然次生林林分直径分布模型研究  

Study on the Stand Diameter Distribution Model of the Natural Secondary Forests in the Mountainous Areas of Eastern Liaoning

作　　者：丁国泉 许继中 

机构地区：[1]辽宁省森林经营研究所,辽宁丹东118002 [2]鄂尔多斯市东胜区园林事业局,内蒙古鄂尔多斯017000

出　　处：《林业资源管理》2012年第5期94-97,124,共5页Forest Resources Management

基　　金：国家林业公益性行业科研专项"三北地区生态林可持续经营关键技术研究与示范"(200804027);辽宁省科技厅农业公关计划项目"辽东山区森林经营关键技术研究与示范"(2011207001)

摘　　要：以峰度、偏度和变动系数为指标研究了辽东山区天然次生林直径株数分布特征。运用Johnson’s SB分布、Gamma分布、3参数和2参数Weibull分布等4种概率密度函数研究了辽东山区天然次生林直径株数分布规律,同时利用Kolmogorov-Smirnov(KS)检验法来检验4种概率分布的拟合效果,结果表明:林分直径的株数分布以Johnson’s SB分布拟合效果最好,Weibull分布(包括2参数和3参数)仅仅适合中度区和弱度区,但不是最好。所有的分布模型均通过了优势度检验,说明均适用于直径株数分布的拟合。Some characters of the diameters of number of stem distributions of secondary forest in mountains of eastern Liaoning were studied by using indices of skewness,kurtosis and coefficient of variation.The stand diameter of number of stem and basal area distributions in the secondary forest were simulated by four probability density functions：Johnson＇s SB,Gamma,two-and three-parameter Weibull distribution.The four distribution functions were tested through Kolmogorov-Smirnov（KS）test.The results showed that the Effects of Thinning of the stand diameter of number of stem distribution,and Johnson＇s SB distribution fit best;Weibull distribution（including the two-and three-parameters）is only suitable for Plot 3 and Plot 2,but not the best.All the distribution models have passed the test of goodness of fit,which are applicable to the model fitting.

关 键 词：抚育间伐 Johnson’sSB分布 Weibul分布 GAMMA分布 辽东山区 天然次生林 

分 类 号：S711[农业科学—林学] S753.7