叶片投影盖度——描述植物群落结构的有效方法  

Foliage Projective Cover,Effective Tool for Describing Structure of Plant Communities

作　　者：姜联合[1] 王建中[1] 郑元润[2] 

机构地区：[1]北京林业大学 [2]中国科学院植物研究所植被数量生态学重点研究实验室,北京100093

出　　处：《云南植物研究》2004年第2期166-172,共7页Acta Botanica Yunnanica

基　　金：国家重大基础研究计划 (G19990 4 35 0 7);国家自然科学基金重点项目 (49835 0 10 )资助

摘　　要：植物群落盖度是描述植物群落结构及其重要性的主要指标之一。但长期以来植物群落盖度的测定往往是基于野外目视估计 ,影响了植物群落盖度特征度量的准确性。本文引入植物群落叶片投影盖度 (FPC)的概念 ,其含义是植物群落叶片覆盖地表的百分率 ,它具有生态意义明确、适于描述植物群落水平结构的特点。使用自制的FPC测量仪 ,在新疆的两个地区进行了FPC的测定 ,同时将测定数据与采用Stella模型工具开发的植物群落生理生态模型的模拟FPC值进行比较 ,二者相符较好。因此 ,认为FPC是描述干旱区植物群落水平结构的有效方法 ,并可用于所有植物群落叶片投影盖度的度量。Plant community coverage was often used as one of factors to describe the structure and importance of plant community.Usually it was estimated by sighting estimation in the field,and this procedure affected the accuracy of measurement of plant community.A useful concept,Foliage Projective Cover (FPC) that means the percentage of the land covered by foliage,was introduced,it had some ecological significances and was suitable for describing horizontal character of plant community.Using simple tool made by us,FPCs were measured at two sites in Xinjiang area.Through ecophysiological model of plant community developed using Stella model tool,we simulated the FPCs at those two sites.Compared with the measured data,we thought that FPC was a useful and an effective method and theory to describe the horizontal structure of plant community in arid area,and it may be used for measuring FPC for all plant communities.

关 键 词：叶片投影盖度 植物群落 结构 地表 叶片 百分率 

分 类 号：Q94-33[生物学—植物学]