The 29 degrees N latitudinal line: an important division in the Hengduan Mountains, a biodiversity hotspot in southwest China

doi:10.1111/j.1756-1051.2008.00235.x

	The 29 degrees N latitudinal line: an important division in the Hengduan Mountains, a biodiversity hotspot in southwest China
	Zhang, Da-Cai 1,2; Boufford, David E.3; Ree, Richard H.4; Sun, Hang1
通讯作者	hsun@mail.kib.ac.cn
	2009
发表期刊	NORDIC JOURNAL OF BOTANY
ISSN	0107-055X
卷号	27 期号:5 页码:405-412
摘要	This paper aimed to explore the division of the southern and northern Hengduan Mountains based on gradients in species similarity and richness, and to analyze species richness in each sub-region. The Hengduan Mountain region was divided into nine latitudinal belts using one degree of latitude to define the belt after which distribution of seed plants within each latitudinal belt was recorded. Latitudinal patterns of species similarity were measured using the Jaccard similarity index for each pair of adjacent latitudinal belts. Non-metric multidimentional scaling (NMDS) was also used to analyze the similarity in species composition among the nine latitudinal belts. The latitudinal pattern of species similarity and the NMDS ordination both showed a great change in species composition across the 29 degrees N latitudinal line, essentially dividing the Hengduan Mountain region into southern and northern sub-regions. Species richness, shown by the c-value of the species-area power function, and species-area ratio along a latitudinal gradient both showed a sharp decrease across the latitudinal belt from 29 degrees 0' to 29 degrees 59'N. The southern sub-region occupied 40% of the total area of the Hengduan Mountain region, but contained more than 80% of all the seed plants in the region. The higher species richness and endemism in the southern sub-region showed it to be the core of the Hengduan biodiversity hotspot, a result not unexpected because of the greater extremes of topography and wider diversity of habitats in the southern portion.
学科领域	Plant Sciences
DOI	10.1111/j.1756-1051.2008.00235.x
收录类别	SCI
语种	英语
WOS记录号	WOS:000270434900012
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/14049
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Lab Biogeog & Biodivers, Kunming Inst Bot, CN-650204 Kunming, Yunnan, Peoples R China 2.SW Forestry Coll, CN-650224 Kunming, Yunnan, Peoples R China 3.Harvard Univ, Herbaria, Cambridge, MA 02138 USA 4.Field Museum Nat Hist, Dept Bot, Chicago, IL 60605 USA
推荐引用方式 GB/T 7714	Zhang, Da-Cai,Boufford, David E.,Ree, Richard H.,et al. The 29 degrees N latitudinal line: an important division in the Hengduan Mountains, a biodiversity hotspot in southwest China[J]. NORDIC JOURNAL OF BOTANY,2009,27(5):405-412.
APA	Zhang, Da-Cai,Boufford, David E.,Ree, Richard H.,&Sun, Hang.(2009).The 29 degrees N latitudinal line: an important division in the Hengduan Mountains, a biodiversity hotspot in southwest China.NORDIC JOURNAL OF BOTANY,27(5),405-412.
MLA	Zhang, Da-Cai,et al."The 29 degrees N latitudinal line: an important division in the Hengduan Mountains, a biodiversity hotspot in southwest China".NORDIC JOURNAL OF BOTANY 27.5(2009):405-412.

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