林木根径与胸径回归模型的建立与应用——以延安北部天然林主要树种为例  

Establisment and Application of Straight Regression Models Between Rhizome and DBH of Main Tree Species in Natural Forests of North Yan′an

作　　者：冯志胜 

机构地区：[1]延安市劳山林业局,陕西甘泉716100

出　　处：《陕西林业科技》2001年第4期26-29,共4页Shaanxi Forest Science and Technology

摘　　要：通过对陕西天然林几个主要树种根径与胸径的回归分析、回归模型的建立及相关关系进行显著性检验 ,结果表明 ,根径与胸径间存在着密切、显著的直线回归关系 ,根径与胸径间存在着确定的函数关系 ,所建立的回归模型是成立的、可用的。从而为以根径推算胸径 ,计算出某一树种单株材积提供了一个方便可行的方法 。Regression analysis between rhizome and dbh of main tree species in nataral forests in North Shaanxi and significat tests on the regression models showed that there was a close straight regression between the rhizame and dbh,definite function existed between the rhizome and dbh,and the established. models were usable. This prorides a simple and feasible method to calculate dbh according to rhizome and to estimate rolume of single tree.The method is valuable in forest practice.

关 键 词：延安北部 天然林树种 根径 胸径 回归模型 单株材积 

分 类 号：S711[农业科学—林学] S758.51