额济纳胡杨生长规律的研究  

RESEARCH ON THE GROWING RULE OF Populus euphratica IN EJINA

作　　者：陈占仙[1] 张明铁[1] 菊花 张秋良[1] 

机构地区：[1]内蒙古农业大学林学院,呼和浩特010019

出　　处：《内蒙古农业大学学报（自然科学版）》2009年第4期65-69,共5页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：内蒙自然科学重点基金;教育部博士点基金(200711020302;20070129005)

摘　　要：本文利用额济纳天然胡杨林平均解析木资料,研究胡杨的生长过程。利用11种生长经验方程建立了胡杨胸径、树高及材积生长过程数学模型,根据相关指数(R2)最大以及残差平方和(SSe)最小的原则,选取最优的模拟方程,模拟出额济纳地区天然胡杨胸径、树高及材积与年龄的最优生长经验方程。它的胸径拟合最优方程是吉田正男方程y=0.968/(1+4.06×103t-3.629)+1.327,树高拟合最优方程是柯列尔方程y=0.815t1.136e-0.069t,材积拟合最优方程是修正Weibull方程。并运用X2检验法来检验所选方程。检验结果显示,预测值与实测值的差异性不显著。在此基础上探讨了额济纳胡杨的生长状况,结果表明胡杨生长具有明显的阶段性。In this paper,we use the average analysis data of Ejina natural Populus euphratica to study the growth process of Populus euphratica.The use of 11 kinds of the growth of the empirical equation was established Populus euphratica,s diameter,height and volume growth process mathematical model,accordance with the relevant index（R2） Maximum and residual sum of squares（SSe） the minimum two principles,select the best simulation equations to simulate an Ejina area of natural Populus euphratica diameter,height and volume growth of age-optimal empirical equation,Its diameter at breast height equation is the best fit equation Masao Yoshida y=0.968∕（1＋4.06×103t-3.629）＋1.327,tree height,the best fitting equation is Rоляср equation y=0.815t1.136e-0.069t,the optimal volume fitting equation to amend Weibull equation.And using X2 test to test the selected equation,test results show that predicted and measured values of the difference was not significant.On this basis,the growth of Populus euphratica discussed the situation Ejina results show that the growth of Populus euphratica obvious stages.

关 键 词：胡杨 直径 树高 材积 生长规律 生长模型 

分 类 号：S792.119.06[农业科学—林木遗传育种]