Small-scale species richness and its spatial variation in an alpine meadow on the Qinghai-Tibet Plateau

	Small-scale species richness and its spatial variation in an alpine meadow on the Qinghai-Tibet Plateau
	Chen, Jun 2; Yamamura, Yasuo 2; Hori, Yoshimichi 2; Shiyomi, Masae 1; Yasuda, Taisuke 3; Zhou, Hua-Kun 4; Li, Ying-nian 4; Tang, Yan-hong 5
刊名	ecological research
	2008-07-01
卷号	23 期号:4 页码:657-663
关键词	grazing Kobresia meadow Qinghai alpine meadow winter grazing
合作状况	其它
中文摘要	we investigated how the high small-scale species richness of an alpine meadow on the qinghai-tibet plateau, china, is maintained. this area is characterized by strong wind and severe cold during long winters. in winter, most livestock is grazed on dead leaves in small pastures near farmers' residences, whereas in the short summer, livestock is grazed in mountainous areas far from farmers' residences. the number of plant species and the aboveground biomass were surveyed for three adjacent pastures differing in grazing management: a late-winter grazing pasture grazed moderately from 1 february to 30 april, an early-winter grazing pasture grazed lightly from 20 september to late october, and a whole-year grazing pasture grazed intensively throughout the entire year. in each pasture, we harvested the aboveground biomass from 80 or 100 quadrats of 0.01 m(2) along a transect and classified the contents by species. we observed 15.5-19.7 species per 0.01 m(2), which is high richness per 0.01 m(2) on a worldwide scale. the species richness in the two winter grazing pastures was higher than that in the whole-year grazing pasture. the spatial variation in species richness and species composition in the two winter grazing pastures in which species richness was high was greater than that in the whole-year grazing pasture in which species richness was lower. most of the leaves that are preserved on the winter grazing pastures during summer are blown away by strong winds during winter, and the remaining leaves are completely exhausted in winter by livestock grazing. a pasture with a high richess is accompanied by a high spatial variation in species richness and species composition. there is a high possibility that the characteristic of spatial variation is also caused by traditional grazing practices in this area.
英文摘要	we investigated how the high small-scale species richness of an alpine meadow on the qinghai-tibet plateau, china, is maintained. this area is characterized by strong wind and severe cold during long winters. in winter, most livestock is grazed on dead leaves in small pastures near farmers' residences, whereas in the short summer, livestock is grazed in mountainous areas far from farmers' residences. the number of plant species and the aboveground biomass were surveyed for three adjacent pastures differing in grazing management: a late-winter grazing pasture grazed moderately from 1 february to 30 april, an early-winter grazing pasture grazed lightly from 20 september to late october, and a whole-year grazing pasture grazed intensively throughout the entire year. in each pasture, we harvested the aboveground biomass from 80 or 100 quadrats of 0.01 m(2) along a transect and classified the contents by species. we observed 15.5-19.7 species per 0.01 m(2), which is high richness per 0.01 m(2) on a worldwide scale. the species richness in the two winter grazing pastures was higher than that in the whole-year grazing pasture. the spatial variation in species richness and species composition in the two winter grazing pastures in which species richness was high was greater than that in the whole-year grazing pasture in which species richness was lower. most of the leaves that are preserved on the winter grazing pastures during summer are blown away by strong winds during winter, and the remaining leaves are completely exhausted in winter by livestock grazing. a pasture with a high richess is accompanied by a high spatial variation in species richness and species composition. there is a high possibility that the characteristic of spatial variation is also caused by traditional grazing practices in this area.
学科主题	生物科学
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	ecology
研究领域[WOS]	environmental sciences & ecology
关键词[WOS]	limestone grassland ; heterogeneity ; niche ; regeneration ; communities ; vegetation ; ecosystem ; energy ; fire ; seed
收录类别	SCI
语种	英语
WOS记录号	WOS:000257395300003
公开日期	2009-12-04
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/1206]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
作者单位	1.Ibaraki Univ, Univ Air, Mito, Ibaraki 3100056, Japan 2.Ibaraki Univ, Fac Sci, Mito, Ibaraki 3100056, Japan 3.Yamanashi Inst Environm Sci, Fujiyoshida, Yamanashi 4030005, Japan 4.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Peoples R China 5.Natl Inst Environm Studies, Tsukuba, Ibaraki 3058506, Japan
推荐引用方式 GB/T 7714	Chen, Jun,Yamamura, Yasuo,Hori, Yoshimichi,et al. Small-scale species richness and its spatial variation in an alpine meadow on the Qinghai-Tibet Plateau[J]. ecological research,2008,23(4):657-663.
APA	Chen, Jun.,Yamamura, Yasuo.,Hori, Yoshimichi.,Shiyomi, Masae.,Yasuda, Taisuke.,...&Tang, Yan-hong.(2008).Small-scale species richness and its spatial variation in an alpine meadow on the Qinghai-Tibet Plateau.ecological research,23(4),657-663.
MLA	Chen, Jun,et al."Small-scale species richness and its spatial variation in an alpine meadow on the Qinghai-Tibet Plateau".ecological research 23.4(2008):657-663.