山西霍山植物群落主要层LAI垂直分布规律  

The Vertical Distribution of LAI in the Main Layer of Plant Community in Huoshan Mountain of Shanxi Province

作　　者：杨志芳[1] 刘任涛[1] 毕润成[1] 

机构地区：[1]山西师范大学生命科学学院,山西临汾041004

出　　处：《山地学报》2006年第B10期307-312,共6页Mountain Research

基　　金：山西省自然科学基金资助项目（20021098）.

摘　　要：在山西霍山七里峪林场，采用间接的光学测量方法对沿着海拔分布的植物群落主要层叶面积指数（LAI）进行了测量，从不同的角度对LAI的垂直分布规律进行分析。结果表明：1．海拔不同，LAI表现出很大的差异，海拔1750m左右的LAI值大于较高与较低海拔的；对LAI和海拔之间的关系进行回归，得到LAI分布的拟合方程：y=b0＋b1x＋b2x^2＋b3x^3（R=0．712，P〈0．01）。2．同一海拔样带，阴坡LAI均大于阳坡，但对同种种群来说，阴坡树种平均胸径并不一定均大于阳坡。3．植被类型LAI比较表现为：低山针叶林〈低山灌丛〈落叶阔叶林〈落叶针叶林〈常绿针叶林；而主要群系LAI比较表现为：油松林（0．38）〈落叶松林（0．78）〈山杨林及其混交林（1．09）〈白桦林（2．00）〈辽东栎林及其混交林（3．73）。4．典型群落LAI值变化分析和人工林与天然林以，比较表明，LAI值在一定海拔达到最大值，这对于山西霍山人工林栽培和丰产林培育等具有重要意义。At Qiliyu farm in Huoshan Mountain, Shanxi province, this paper measures the LAI in the main layer of plant community along the altitude with the indirect optical meathod. And the vertical regulation of LAI is also analyzed from different aspects. The results are that： 1 ） the LAI values on different altitude are rather different. The LAI value on the altitude of 1 750 m or so is bigger than that on the altitude higher or lower than 1 750 m. Mean- while, the correlation between LAI and altitude is regressed. The regressing equation is y = bo ＋ b1x ＋ b2x^2 ＋ b3x^3 （R =0. 712 ,p 〈 0. 01 ）. 2） On the same altitude, the LAI value on the shady slopeis higher than that on the sunny slope. But for the same population, the diameter on the breast high on the shady slopeis not all bigger than that on the sunny slope. 3） the comparis on of LAI of different plantati on is shown ： coniferous forest on the low hill 〈 brushwoodon the low hill 〈 deciduous broad leaved forest 〈 deciduous coniferous forest 〈 evergreen coniferous forest; while the comparison of LAI of main formation is shown： Form. Pinas tabulaeformic （0.38） 〈 Form. Larix. principis-rupprechtii （0.78） 〈 Form. Populus davidiana and Form. Populus davidiana mixed （1.09） 〈 Form. Betula platyphylla （2） 〈 Form. Quercus liaotungensis and Form. Quercus liaotungensis mixed（3.73）. 4） Though the analysis on the changing LAI of typical community and of different forest, manned forest and natural forest, it shows that the LAI value is the biggest on a certain altitude. This is very valuable for the cultivationof manned forest and harvest forest in Huoshan mountain of Shanxi province.

关 键 词：LAI 海拔 垂直分布 植物群落 霍山 山西 

分 类 号：S718.5[农业科学—林学]