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	Soil texture controls vegetation biomass and organic carbon storage in arid desert grassland in the middle of Hexi Corridor region in Northwest China
	Su, Yongzhong; Wang, Jiuqiang; Yang, Rong; Yang, Xiao; Fan, Guiping
刊名	SOIL RESEARCH
	2015
卷号	53期号:4页码:366-376
关键词	arid desert grassland Northwest China soil texture SOC stock vegetation biomass
ISSN号	1838-675X
DOI	10.1071/SR14207
通讯作者	Su, Yongzhong(suyzh@lzb.ac.cn)
英文摘要	Soil texture plays an important role in controlling vegetation production and soil organic carbon (SOC) concentration in arid desert grassland ecosystems. However, little is known about the occurrence and extent of these textural effects in the arid desert grasslands of Northwest China. This study used 160 soil profiles taken from 32 desert grassland sites in similar topographical units (alluvial-diluvial fans) in the middle of Hexi Corridor region of Northwest China to investigate vegetation biomass, SOC storage, and soil texture of seven layers in the top 100cm of soil. The mean aboveground biomass, below-ground biomass, and total biomass in arid desert grassland were 155.3, 95.3, and 256.3gm(-2), respectively. More than 95% of the below-ground biomass was distributed in the top 30cm of soil. Spatially, vegetation biomass was positively related to soil clay content and silt+clay content. The mean SOC density in the top 100cm was 2.94kgm(-2) and similar to 46.8% of the storage was concentrated in the top 30cm. SOC concentrations and stocks were positively and significantly related to clay content and silt+clay content in the seven soil layers sampled from the top 100cm. The soil silt+clay content explained 42-79% of the variation in SOC stocks in the different soil depths. In conclusion, soil texture appears to be an important control on vegetation productivity and SOC capacity in arid Hexi Corridor desert grassland soils.
收录类别	SCI
WOS关键词	BIOTIC CONTROLS ; PATTERNS ; MATTER ; NITROGEN ; CLIMATE ; PLAINS ; STEPPE ; STOCKS ; WATER ; POOL
WOS研究方向	Agriculture
WOS类目	Soil Science
语种	英语
出版者	CSIRO PUBLISHING
WOS记录号	WOS:000357123100002
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555570
专题	寒区旱区环境与工程研究所
通讯作者	Su, Yongzhong
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Inland River Basin Ecohydrol, Linze Inland River Basin Res Stn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Su, Yongzhong,Wang, Jiuqiang,Yang, Rong,et al. Soil texture controls vegetation biomass and organic carbon storage in arid desert grassland in the middle of Hexi Corridor region in Northwest China[J]. SOIL RESEARCH,2015,53(4):366-376.
APA	Su, Yongzhong,Wang, Jiuqiang,Yang, Rong,Yang, Xiao,&Fan, Guiping.(2015).Soil texture controls vegetation biomass and organic carbon storage in arid desert grassland in the middle of Hexi Corridor region in Northwest China.SOIL RESEARCH,53(4),366-376.
MLA	Su, Yongzhong,et al."Soil texture controls vegetation biomass and organic carbon storage in arid desert grassland in the middle of Hexi Corridor region in Northwest China".SOIL RESEARCH 53.4(2015):366-376.

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