气候变化领域集成服务门户(CCPortal): New indices to balance α-diversity against tree size inequality

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DOI	10.1007/s11676-023-01686-3
	New indices to balance α-diversity against tree size inequality
	Zhang, Li; Quinn, Brady K.; Hui, Cang; Lian, Meng; Gielis, Johan; Gao, Jie; Shi, Peijian
发表日期	2024
ISSN	1007-662X
EISSN	1993-0607
起始页码	35
结束页码	1
卷号	35 期号:1
英文摘要	The number and composition of species in a community can be quantified with alpha-diversity indices, including species richness (R), Simpson's index (D), and the Shannon-Wiener index (HGREEK TONOS). In forest communities, there are large variations in tree size among species and individuals of the same species, which result in differences in ecological processes and ecosystem functions. However, tree size inequality (TSI) has been largely neglected in studies using the available diversity indices. The TSI in the diameter at breast height (DBH) data for each of 999 20 m x 20 m forest census quadrats was quantified using the Gini index (GI), a measure of the inequality of size distribution. The generalized performance equation was used to describe the rotated and right-shifted Lorenz curve of the cumulative proportion of DBH and the cumulative proportion of number of trees per quadrat. We also examined the relationships of alpha-diversity indices with the GI using correlation tests. The generalized performance equation effectively described the rotated and right-shifted Lorenz curve of DBH distributions, with most root-mean-square errors (990 out of 999 quadrats) being < 0.0030. There were significant positive correlations between each of three alpha-diversity indices (i.e., R, D, and H') and the GI. Nevertheless, the total abundance of trees in each quadrat did not significantly influence the GI. This means that the TSI increased with increasing species diversity. Thus, two new indices are proposed that can balance alpha-diversity against the extent of TSI in the community: (1 - GI) x D, and (1 - GI) x H'. These new indices were significantly correlated with the original D and HGREEK TONOS, and did not increase the extent of variation within each group of indices. This study presents a useful tool for quantifying both species diversity and the variation in tree sizes in forest communities, especially in the face of cumulative species loss under global climate change.
英文关键词	Diameter at breast height (DBH); Gini index; Shannon-Wiener index; Simpson's index; Quadrat; Tree size
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:001131698000001
来源期刊	JOURNAL OF FORESTRY RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304353
作者单位	Nanjing Forestry University; Fisheries & Oceans Canada; Stellenbosch University; University of Antwerp; Xinjiang Normal University
推荐引用方式 GB/T 7714	Zhang, Li,Quinn, Brady K.,Hui, Cang,et al. New indices to balance α-diversity against tree size inequality[J],2024,35(1).
APA	Zhang, Li.,Quinn, Brady K..,Hui, Cang.,Lian, Meng.,Gielis, Johan.,...&Shi, Peijian.(2024).New indices to balance α-diversity against tree size inequality.JOURNAL OF FORESTRY RESEARCH,35(1).
MLA	Zhang, Li,et al."New indices to balance α-diversity against tree size inequality".JOURNAL OF FORESTRY RESEARCH 35.1(2024).