Legumes in Chinese Natural Grasslands: Species, Biomass, and Distribution

	Legumes in Chinese Natural Grasslands: Species, Biomass, and Distribution
	Jin, Dongmei 1,2; Ma, Jianjing 1,2; Ma, Wenhong 3; Liang, Cunzhu 3; Shi, Yue 1,2; He, Jin-Sheng 1,2,4
刊名	rangeland ecology & management
	2013-11-01
卷号	66 期号:6 页码:648-656
关键词	aboveground biomass Inner Mongolia nitrogen fixation species richness steppe Tibetan Plateau
ISSN号	1550-7424
通讯作者	he, js (reprint author), peking univ, dept ecol, coll urban & environm sci, 5 yiheyuan rd, beijing 100871, peoples r china.
中文摘要	the composition and abundance of legumes affect the economic value and ecological sustainability of natural grasslands. we collected data on species richness and aboveground biomass of legumes and their percentages of the total community at 78 field sites in chinese natural grasslands on the tibetan plateau (alpine steppe and alpine meadow) and in inner mongolia (meadow steppe, typical steppe, and desert steppe), and analyzed the association between these attributes with community, climate, and soil factors. at least one legume species occurred in 89.7% of the sites studied; the genera astragalus, oxytropis, and medicago were dominant among the 12 legume genera recorded. generally, within 1 m(2) of grassland, only one legume species was present with an aboveground biomass of 1.1 g; this accounted for 9.1% of community species richness and 1.7% of total aboveground biomass. in comparison with many other types of grassland around the world, both the legume aboveground biomass and its percentage of the total were low in chinese grasslands, especially in inner mongolia. the low biomass of legumes in grassland might be attributable to the low growing-season temperature on the tibetan plateau, while in inner mongolia, low precipitation combined with high temperatures during the growing season may be the main reason. although legumes in chinese grasslands have substantial potential for nitrogen fixation and contain a variety of forage species, their ecological and economic value has been limited by their low biomass. suggestions to enhance legume biomass in chinese grasslands are provided.
英文摘要	the composition and abundance of legumes affect the economic value and ecological sustainability of natural grasslands. we collected data on species richness and aboveground biomass of legumes and their percentages of the total community at 78 field sites in chinese natural grasslands on the tibetan plateau (alpine steppe and alpine meadow) and in inner mongolia (meadow steppe, typical steppe, and desert steppe), and analyzed the association between these attributes with community, climate, and soil factors. at least one legume species occurred in 89.7% of the sites studied; the genera astragalus, oxytropis, and medicago were dominant among the 12 legume genera recorded. generally, within 1 m(2) of grassland, only one legume species was present with an aboveground biomass of 1.1 g; this accounted for 9.1% of community species richness and 1.7% of total aboveground biomass. in comparison with many other types of grassland around the world, both the legume aboveground biomass and its percentage of the total were low in chinese grasslands, especially in inner mongolia. the low biomass of legumes in grassland might be attributable to the low growing-season temperature on the tibetan plateau, while in inner mongolia, low precipitation combined with high temperatures during the growing season may be the main reason. although legumes in chinese grasslands have substantial potential for nitrogen fixation and contain a variety of forage species, their ecological and economic value has been limited by their low biomass. suggestions to enhance legume biomass in chinese grasslands are provided.
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	ecology ; environmental sciences
研究领域[WOS]	environmental sciences & ecology
关键词[WOS]	topographic position ; tallgrass prairie ; nitrogen-fixation ; plant ; climate ; biodiversity ; ecosystems ; management ; dynamics ; savanna
收录类别	SCI
语种	英语
WOS记录号	WOS:000327365300004
公开日期	2014-05-09
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/3907]
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.Peking Univ, Dept Ecol, Beijing 100871, Peoples R China 2.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China 3.Inner Mongolia Univ, Dept Ecol, Hohhot 010021, Peoples R China 4.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Jin, Dongmei,Ma, Jianjing,Ma, Wenhong,et al. Legumes in Chinese Natural Grasslands: Species, Biomass, and Distribution[J]. rangeland ecology & management,2013,66(6):648-656.
APA	Jin, Dongmei,Ma, Jianjing,Ma, Wenhong,Liang, Cunzhu,Shi, Yue,&He, Jin-Sheng.(2013).Legumes in Chinese Natural Grasslands: Species, Biomass, and Distribution.rangeland ecology & management,66(6),648-656.
MLA	Jin, Dongmei,et al."Legumes in Chinese Natural Grasslands: Species, Biomass, and Distribution".rangeland ecology & management 66.6(2013):648-656.