Effects of grazing and experimental warming on DOC concentrations in the soil solution on the Qinghai-Tibet plateau

NWIPB OpenIR

	Effects of grazing and experimental warming on DOC concentrations in the soil solution on the Qinghai-Tibet plateau
	Luo, Caiyun 1,2; Xu, Guangping 1,2; Wang, Yanfen 2; Wang, Shiping 1; Lin, Xingwu 3; Hu, Yigang 1,2; Zhang, Zhenhua 1,2; Chang, Xiaofeng 1,2; Duan, Jichuang 1,2; Su, Ailing 1,2; Zhao, Xinquan 1
	2009-12-01
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
卷号	41 期号:12 页码:2493-2500
文章类型	Article
摘要	Little information is available about the effects of global warming and land management on dissolved organic carbon (DOC) concentration in soil solution in the field. Here, for the first time, we used a free-air temperature enhancement (FATE) system in a controlled warming-grazing experiment in 2006 and 2007 to test the hypothesis that grazing modifies the response of soil solution DOC concentration to experimental warming. Warming with no-grazing (WNG) significantly increased the average soil solution DOC concentration to 40 cm soil depth by 14.1 and 17.2% compared with no-warming with no-grazing (NWNG) in 2006 and 2007 respectively based on 1.3-1.4 degrees C soil temperature increase. However, the lack of significant differences among warming with grazing (WG), no-warming with grazing (NWG) and NWNG indicate that moderate grazing modified the effect of warming on DOC concentration in the soil solution. The effect of grazing on DOC concentration in the soil solution varied with sampling date and soil depth. Generally, the direct contribution of soil temperature and soil moisture to variation of DOC concentration in the soil solution was small. Positive correlations were observed between soil solution DOC concentration in the surface soil and standing death quality and belowground biomass. The Lignin:N ratio in the standing death and belowground biomass at 10 cm soil depth explained 60% of the variation of mean DOC concentration at 10 cm soil depth. Soil moisture and belowground biomass explained 79% of the variation of the mean soil solution DOC concentration to 40 cm soil depth in 2007. (C) 2009 Elsevier Ltd. All rights reserved.; Little information is available about the effects of global warming and land management on dissolved organic carbon (DOC) concentration in soil solution in the field. Here, for the first time, we used a free-air temperature enhancement (FATE) system in a controlled warming-grazing experiment in 2006 and 2007 to test the hypothesis that grazing modifies the response of soil solution DOC concentration to experimental warming. Warming with no-grazing (WNG) significantly increased the average soil solution DOC concentration to 40 cm soil depth by 14.1 and 17.2% compared with no-warming with no-grazing (NWNG) in 2006 and 2007 respectively based on 1.3-1.4 degrees C soil temperature increase. However, the lack of significant differences among warming with grazing (WG), no-warming with grazing (NWG) and NWNG indicate that moderate grazing modified the effect of warming on DOC concentration in the soil solution. The effect of grazing on DOC concentration in the soil solution varied with sampling date and soil depth. Generally, the direct contribution of soil temperature and soil moisture to variation of DOC concentration in the soil solution was small. Positive correlations were observed between soil solution DOC concentration in the surface soil and standing death quality and belowground biomass. The Lignin:N ratio in the standing death and belowground biomass at 10 cm soil depth explained 60% of the variation of mean DOC concentration at 10 cm soil depth. Soil moisture and belowground biomass explained 79% of the variation of the mean soil solution DOC concentration to 40 cm soil depth in 2007. (C) 2009 Elsevier Ltd. All rights reserved.
关键词	Warming Grazing Infrared Heater Doc Concentration Soil Temperature Soil Moisture Alpine Meadow
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	DISSOLVED ORGANIC-CARBON ; LEAF-LITTER DECOMPOSITION ; CLIMATE-CHANGE ; TERRESTRIAL ECOSYSTEMS ; NITROGEN AVAILABILITY ; ARCTIC ECOSYSTEMS ; BOREAL FOREST ; UPLAND SOILS ; ICE CORES ; TEMPERATURE
收录类别	SCI
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:000272062100015
引用统计	被引频次：56[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1792
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, NW Inst Plateau Biol, Haibei Alpine Meadow Ecosyst Res Stn, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Qinghai, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Inst Soil Sci Nanjing, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Luo, Caiyun,Xu, Guangping,Wang, Yanfen,et al. Effects of grazing and experimental warming on DOC concentrations in the soil solution on the Qinghai-Tibet plateau[J]. SOIL BIOLOGY & BIOCHEMISTRY,2009,41(12):2493-2500.
APA	Luo, Caiyun.,Xu, Guangping.,Wang, Yanfen.,Wang, Shiping.,Lin, Xingwu.,...&Zhao, Xinquan.(2009).Effects of grazing and experimental warming on DOC concentrations in the soil solution on the Qinghai-Tibet plateau.SOIL BIOLOGY & BIOCHEMISTRY,41(12),2493-2500.
MLA	Luo, Caiyun,et al."Effects of grazing and experimental warming on DOC concentrations in the soil solution on the Qinghai-Tibet plateau".SOIL BIOLOGY & BIOCHEMISTRY 41.12(2009):2493-2500.