武夷山国家公园大安源甜槠群落主要种群生态位研究  

Niche analysis of the main populations of the Castanopsis eyrei community in Daanyuan,Wuyishan National Park

作　　者：杨青 YANG Qing(Test Center of Agricultural Research of Fujian Province Department of Science and Technology,Fuzhou,Fujian 350012,China)

机构地区：[1]福建省科技厅农牧业科研中试中心,福建福州350012

出　　处：《武夷科学》2023年第1期23-30,共8页Wuyi Science Journal

基　　金：福建省公益类科研院所专项(2018R1010-1)。

摘　　要：为了解武夷山国家公园大安源地区主要种群在群落中的关系及其相对地位,通过定量分析法,以生态位宽度、生态位重叠度、生态位相似性等为指标,开展武夷山国家公园大安源甜槠(Castanopsis eyrei)群落主要种群生态位研究,探讨各种群对环境资源的利用状况及相互功能关系以及主要种群的生态位特征等生态特点。结果表明,甜槠的重要值和生态位宽度值最大,具有最强的竞争能力和生态适应能力,为乔木林冠层的优势种;生态位相似性比例(C_(ih))在0.6以上的占了74.29%,表明该群落物种利用资源相似程度很大;生态位重叠指数L_(ih)和L_(hi)大于0.5的种对分别有78和97对,分布比例分别为74.28%和92.38%,生态位重叠程度很高,各种群对资源的共享趋势较为明显。研究结果可为武夷山国家公园大安源群落生物多样性监测及保护提供参考依据。This study aimed to understand the relationships between tree populations in a community and their relative status in the Daanyuan area of Wuyishan National Park.I used quantitative analysis to explore the use of environmental resources by various populations,and their ecological characteristics and relationships with each other.I measured the niche breadth,similarity,and overlap of the main populations in the Castanopsis eyrei community using the Shannon-Wiener and Hurlbert indexes.The results showed that C.eyrei had the highest importance value,largest niche,strongest competitive ability and ecological adaptability,and was the dominant species in the tree canopy.The species utilization of the C.eyrei community in Daanyuan,Wuyishan,was very similar,with 74.29% of species having a niche similarity of more than 0.6.There were 78 and 97 pairs of species with niche overlap indexes(L_(ih) and L_(hi)) of more than 0.5,respectively,and the proportion of the distribution was 74.28% and 92.38%,respectively.These results suggest that a clear trend exists toward resource sharing among different groups in the C.eyrei community.The above results can provide a reference for biodiversity monitoring and protection of the Daanyuan community in Wuyishan National Park.

关 键 词：甜槠 生态位宽度 生态位相似性 生态位重叠 武夷山国家公园 

分 类 号：Q948.1[生物学—植物学]