作　　者： ; ; ; ; (魏彦会）;

机构地区： 桂林理工大学旅游学院

出　　处： 《西部林业科学》 2015年第1期125-128,共4页

摘　　要： 运用LAI-2000冠层分析仪对广西猫儿山3种典型森林植被进行叶面积指数测定,对比3种典型森林植被叶面积空间分布以及其水平空间分布的均匀性。结果表明,(1)杉木林、木荷林和毛竹林叶面积指数水平分布由内向外逐渐减小,叶面积指数与距林冠投影中心距离呈二次函数关系;(2)杉木林叶分布的最大值在树冠顶部,从上到下叶面积指数逐渐下降;而木荷林从上层到下层叶面积指数呈增加的趋势;(3)杉木林的冠层在水平空间分布的均匀性要好于其他2种林型,毛竹林分布均匀性最差。本研究对揭示不同林型叶面积在森林植被中的空间格局,探究林冠结构和水文过程的关系,具有重要的理论和实践意义。 Leaf area index （ LAI） of three typical forests, which were Cunninghamia lanceolata, Schima superba and Phyllostachys heterocycla, was measured by using a LAI-2000 plant canopy analyzer in Mao ’ er Mountain, Guangxi province.This study compared their spatial distribution of leaf area and canopy uniformity of horizontal distribution.The results showed that： （1） The horizontal distribution of single tree LAI in three forests decreased gradually from inside to outside; LAI and the horizontal distance from the center of the canopy had a relationship of quadratic function;（2） The maximum LAI of C.lanceolata was at the top of the canopy and LAI decreased gradu-ally from the top to the bottom;LAI of S.superba increased significantly from the upper to the lower; （3） The can-opy uniformity of C.lanceolata was the best while P.heterocycla was the worst.This study was theorectically and practically meaningful to provide scientific basis for investigating the spatial distribution of LAI and the relationships between canopy structure and hydrological process.

关 键 词： 猫儿山 典型植被 林冠结构 叶面积指数

领　　域： [农业科学] [农业科学] [农业科学] [农业科学]