思茅松天然林林分胸径与树高分布变化研究  

Tree siameter and height distribution of natural forest of Pinus kesiya var. langbianensis

作　　者：欧光龙[1,2] 王俊峰[1] 胥辉[1] 肖义发[1] 字俊江 

机构地区：[1]西南林业大学西南地区生物多样性保育国家林业局重点实验室,云南昆明650224 [2]东北林业大学林学院,黑龙江哈尔滨150040

出　　处：《广东农业科学》2013年第21期54-57,共4页Guangdong Agricultural Sciences

基　　金：云南省基金应用基础研究计划项目(2012FD027);国家自然科学基金(31160157)

摘　　要：以云南省思茅区思茅松天然次生林为研究对象,研究林分树高和胸径结构的变化,分析了树高和胸径分布的峰度和偏度变化,并采用逐步回归分析拟合峰度和偏度与环境因子的关系.结果表明：（1）胸径分布的偏度值在-0.1826～2.7201之间,峰度值在-1.2729～9.9404之间;胸径分布的偏度值与林分平均高（HM）、土壤有效磷（YP）呈负相关,与林分平均胸径（MDBH）呈正相关;峰度值与林木株数（NO）、土壤总氮（TN）、土壤pH值相关,且均呈正相关.（2）树高分布的偏度值在-0.6078～1.2681之间,峰度值在-0.6875～2.3582之间;树高分布的偏度值与林分平均高（HM）、土壤pH值呈负相关,与土壤速效钾（SK）、林分优势高（HT）呈正相关;峰度值与坡度（SLO）呈负相关,与样地内林木株数（NO）和总磷（TP）呈正相关.Take Simao Pine （Pinus kesiya var. langbianensis） natural forest in Simao district of Yunnan province as research object, tree height and diameter structure has been analyzed. The skewness and kurtosis of diameter and height distribution has been accounted. Then the relation of both indices with environment and stand factors has been analyzed by stepwise regression. The results showed that：（1） The skewness values of tree diameter at breast height （DBH） were from- 0.1826 to 2.7201, and the skewness distribution of stand was positively related with mean diameter at breast height （MDBH）, and negatively with mean height of stand （HM） and available phosphorus in soil （YP）. The kurtosis of DBH were from -1.2729 to 9.9404, and the kurtosis distribution of stand was positively related with the number of trees （NO）, total nitrogen of soil （TN） and pH value of soil. （2） The skewness values of tree height （H） were from -0.6078 to 1.2681, and the values were positively related with dominant height of stand （HT） and soil available potassium （SK）, and negatively with mean height of stand （HM） and the pH value of soil. The kurtosis values of DBH were from -0.6875 to 2.3582, and the values were positively related with the number of trees （NO） and total phosphorus of soil （TP）, and negatively with the slope of plots （SLO）.

关 键 词：峰度 偏度 思茅松 胸径 树高 云南省思茅区 

分 类 号：S758.5[农业科学—森林经理学]