期刊论文详细信息
PeerJ
Species presence frequency and diversity in different patch types along an altitudinal gradient: Larix chinensis Beissn in Qinling Mountains (China)
article
Minyi Huang1  Renyan Duan1  Shixiong Wang3  Zhigao Wang1  Weiyi Fan2 
[1] College of Life Sciences, Anqing Normal University;College of Life Sciences, Shaanxi Normal University;School of Biological and Food Engineering, Suzhou University
关键词: Patch type;    Gap-forming processes;    Species diversity;    Coexistence;    Dispersal limitation;   
DOI  :  10.7717/peerj.1803
学科分类:社会科学、人文和艺术(综合)
来源: Inra
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【 摘 要 】

Forest communities are mosaic systems composed of patches classified into four different developmental patch types: gap patch (G), building patch (B), mature patch (M) and degenerate patch (D). To study the mechanisms maintaining diversity in subalpine coniferous forests, species presence frequency and diversity in the four distinct patch types (G, B, M and D) of Larix chinensis conifer forests at three altitudinal gradients in the Qinling Mountains were analyzed. Our results were as follows: (1) Different species (or functional groups) had distinct presence frequencies in the four different patch types along the altitudinal gradient; (2) Some species or functional groups (species groups sharing similar traits and responses to the environment) only occurred in some specific patches. For seed dispersal, species using wind mainly occurred in G and D, while species using small animals mainly occurred in B and M; (3) Species composition of adjacent patch types was more similar than non-adjacent patch types, based on the lower β diversity index of the former; (4) The maximum numbers of species and two diversity indices (D′ and H′) were found in the middle altitudes. Various gap-forming processes and dispersal limitation may be the two major mechanisms determining species diversity in Larix chinensis coniferous forests at the patch scale.

【 授权许可】

CC BY   

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