不同时空尺度下武夷山甜槠林物种多样性与生物量的动态关系  

Relationship between Species Biodiversity and Biomass Accumulation in a Castanopsis eyrei Forest in Wuyishan Mountain under Different Temporal and Spatial Scales

作　　者：任引[1] 彭丹[1] 潘俊忠 洪志猛[3,4] 叶功富[4] 

机构地区：[1]中国科学院城市环境研究所城市环境与健康重点实验室,厦门361021 [2]福建省林业调查规划院,福州350003 [3]南京林业大学森林资源与环境学院,南京210037 [4]福建省林业科学研究院,福州350012

出　　处：《林业科学》2010年第8期33-38,共6页Scientia Silvae Sinicae

基　　金：福建省自然科学基金项目(No.2009J01189);厦门市科技计划项目(No.3502Z20092005)共同资助

摘　　要：研究武夷山中亚热带甜槠常绿阔叶林9600和400m2样地物种多样性和生物量的动态关系。结果表明:随着演替进展,9600m2样地生物量增加,物种丰富度在群落总体、乔木层和下木层均表现为下降趋势,个体数量在群落总体表现为下降趋势,在乔木层表现为先增加后下降的趋势,在下木层表现为先下降后增加的趋势,Shannon-Wiener指数在群落总体和乔木层均表现为下降趋势,在下木层表现为先下降后增加的趋势,均匀度指数在群落总体、乔木层和下木层均表现为先下降后增加的趋势;400m2样地物种多样性各指标在不同层次不同时间进程中表现出明显的异质性,2001—2004年,随着活立木生物量的增加,下木层Shannon-Wiener指数和物种丰富度明显下降,2004—2007年,乔木层Shannon-Wiener指数和物种丰富度明显下降,物种多样性各指标与活立木生物量间均不存在显著相关性(P>0.05)。物种多样性对生态系统功能的影响在不同的时空尺度中差异明显。The dynamic relationship between species biodiversity and biomass accumulation was studied in a mid-subtropical evergreen broad-leaved forest in Wuyishan Mountain. A 9 600 m2 and 400 m2 plots were established in a Castanopsis eyrei Forest. The results were as follows： Though biomass was increasing with progress of succession in the 9 600 m2 plot,arbor layer, undergrowth and overall community showed a downward trend in species richness. The individual number declined in the whole community,however,it first increased then decreased in arbor layer and first decreased then increased in undergrowth, respectively. Shannon - Wiener index of whole community and arbor layer diversity showed a significant decrease,whereas the index first decreased then increased in undergrowth. Evenness index of arbor layer,undergrowth and whole community all first decreased then increased. At the same time,these indexes varies with the time course in 400 m2 plots. Shannon-Wiener index and species richness decreased,this decrease mainly reflected substantial decline in undergrowth from 2001 to 2004; however, there was a downward trend in tree layer from 2004 to 2007. Furthermore,there was no significant correlation between biodiversity index and standing tree biomass （P 0. 05）. In summery,the extent to which the biodiversity affected ecosystem functions was obvious differences in different temporal and spatial scales.

关 键 词：中亚热带 甜槠林 物种多样性 生物量 

分 类 号：S718.54[农业科学—林学]