干旱区生态环境知识资源中心(Arid): Community assembly along a successional chronosequence in the northern tropical karst mountains, South China

Arid

DOI	10.1007/s11104-023-06118-z
	Community assembly along a successional chronosequence in the northern tropical karst mountains, South China
	Fu, Ruiyu; Dai, Licong; Zhang, Zhonghua; Hu, Gang
通讯作者	Hu, G
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2023
卷号	491 期号:1-2 页码:317-331
英文摘要	Background and aimsInsight for vegetation restoration in karst mountains could come from understanding the methods by which communities are built along a successional chronosequence. We integrated species diversity, phylogenetic structure, and functional trait diversity to investigate the mechanisms governing community assembly along a successional chronosequence in the northern tropical karst mountains, South China.MethodsFive successional sequences, including grassland, shrubland, young forest, middle-aged forest, and primary forest, were selected in the northern tropical karst mountains using the space-for-time substitution method. The relationships between species diversity and environmental variables (elevation, slope degree and rock exposed rate) were investigated using redundancy analysis and variance partitioning methods.Results and discussionOur results showed that as succession progressed, species and phylogenetic diversity showed an increasing trend, then a decreasing trend, with the maximum value occurring in young forests, which displayed the optimum curves over the successional gradient. In terms of functional diversity, shrubland, and young forest had significantly higher functional richness than grassland and middle-aged forest, and grassland and young forest had significantly higher quadratic entropy coefficients than primary forest. The vegetative community changed in phylogenetic structure from clustering in the early stages of succession to diverging in the late stages.In contrast, the leaf thickness density decreased as succession progressed, suggesting that the young forest vegetation had the highest resource acquisition ability and utilization rate as the successional progressed. Additionally, the chlorophyll content, leaf thickness, and leaf area showed a first increased then decreased trend as successional progressed.ConclusionsOur results suggest that due to harsher soil conditions, the vegetation in early successional stage was dominated by environmental filtering (i.e., limitation of environmental resources), whereas the vegetation in late successional stage was governed by competitive exclusion (i.e., species competition). Our findings can guide plants conservation and ecological restoration in the tropical karst regions.
英文关键词	Karst landform Community assembly Successional stage Species diversity Phylogenetic structure Leaf functional traits
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001022614200001
WOS关键词	ROCKY DESERTIFICATION ; PHYLOGENETIC DIVERSITY ; FUNCTIONAL TRAITS ; FOREST COMMUNITIES ; CHANGBAI MOUNTAINS ; PRODUCTIVITY ; DOMINANCE ; STRATEGY ; DRIVERS ; DRY
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398020
推荐引用方式 GB/T 7714	Fu, Ruiyu,Dai, Licong,Zhang, Zhonghua,et al. Community assembly along a successional chronosequence in the northern tropical karst mountains, South China[J],2023,491(1-2):317-331.
APA	Fu, Ruiyu,Dai, Licong,Zhang, Zhonghua,&Hu, Gang.(2023).Community assembly along a successional chronosequence in the northern tropical karst mountains, South China.PLANT AND SOIL,491(1-2),317-331.
MLA	Fu, Ruiyu,et al."Community assembly along a successional chronosequence in the northern tropical karst mountains, South China".PLANT AND SOIL 491.1-2(2023):317-331.