小陇山林区锐齿栎群落邻体干扰指数研究  

Community Interference Index of Quercus aliena var.acutiserrata in Xiaolongshan Forests

作　　者：石小龙 刘文桢 郭小龙 张宋智 马建伟 

机构地区：[1]甘肃省小陇山林业实验局林业科学研究所,甘肃小陇山森林生态系统定位研究站,甘肃天水741022

出　　处：《西北林学院学报》2012年第4期73-76,92,共5页Journal of Northwest Forestry University

基　　金：秦岭西段典型森林生态系统健康维护与经营技术示范(200804022G)

摘　　要：以小陇山林区锐齿栎(Quercus aliena var.acutiserrata)林为研究对象,设锐齿栎单株为基株,将6m半径内的其它树种定义为邻体,采用干扰指数模型和锐齿栎个体的大小进行回归分析,从而获得林木间的竞争关系。结果表明:锐齿栎林分内,锐齿栎个体大小与邻体干扰指数之间呈显著的负相关性,锐齿栎个体之间存在着强烈的种内竞争,且种内、种间及与整个林分的邻体干扰指数强度都随着基株木个体的增大而下降。依此确定了在本林区锐齿栎林分中基株木与邻体单木间的最大邻体干扰指数值,反推出对基株木竞争强的邻体的胸径大小,从而结合其他因素对其相邻木进行必要的经营措施。Establishing single tree plant in Quercus aliena var. acutiserrata forest occurring in Xiaolongshan as object, all of the others within a circle of 6 m in radius from the object tree were defined as its neighbor- hoods, regressive analysis was carried out based on the neighborhood interference index and the size of ob- ject trees to understand the competitions among the tree plants within the forest. Significantly negative correlations were found between the tree size and interference index. Intense intraspecific competitions oc- curred among the individuals. The intensities of the neigborhood interference indices of intraspecies, inter- species and the overall stand decreased as the increase of individual size. Based on the above results in this region, the maximum neighborhood interference index of the object tree with its neighborhood individuals was determined, and the diameter of the neighborhood individual that exhibited the most intensive compe- tition was reversely calculated, by which and other factors, necessary management measures for the neigh- borhood trees would be adopted for the healthy development of the forest.

关 键 词：锐齿栎 邻体干扰指数 小陇山林区 

分 类 号：S718.54[农业科学—林学]