Fungi regulate the response of the N2O production process to warming and grazing in a Tibetan grassland

doi:10.5194/bg-15-4447-2018

	Fungi regulate the response of the N2O production process to warming and grazing in a Tibetan grassland
	Wang, JZ (Wang, Jinzhi)8; Jiang, LL (Jiang, Lili)2; Luo, CY (Luo, Caiyun)9; Ma, WC (Ma, Wenchao)1; Gu, TB (Gu, Tianbao)1; Chen, GY (Chen, Guanyi)1,10; Zhong, L (Zhong, Lei)1; Wang, SP (Wang, Shiping)2; Xu, XL (Xu, Xingliang)3; Wang, YF (Wang, Yanfen)4
刊名	BIOGEOSCIENCES
	2018-07-20
卷号	15 期号:14 页码:4447-4457
关键词	ALPINE MEADOW ECOSYSTEM ICE CORE EVIDENCE INNER-MONGOLIA NITROGEN-CYCLE CLIMATE-CHANGE BACTERIAL AMMONIA FLUXES DENITRIFICATION MANAGEMENT
ISSN号	1726-4170
DOI	10.5194/bg-15-4447-2018
英文摘要	Lack of understanding of the effects of warming and winter grazing on soil fungal contribution to the nitrous oxide (N2O) production process has limited our ability to predict N2O fluxes under changes in climate and land use management, because soil fungi play an important role in driving terrestrial N cycling. A controlled warming and winter grazing experiment that included control (C), winter grazing (G), warming (W) and warming with winter grazing (WG) was conducted to investigate the effects of warming and winter grazing on soil N2O production potential in an alpine meadow on the Tibetan Plateau. Our results showed that soil bacteria and fungi contributed 46 +/- 2% and 54 +/- 2% to nitrification, and 37 +/- 3% and 63 +/- 3% to denitrification in the control treatment, respectively. We conclude that soil fungi could be the main source of N2O production potential for the Tibetan alpine grasslands. In our results, neither warming nor winter grazing affected the activity of enzymes responsible for overall nitrification and denitrification. However, warming significantly increased the enzyme activity of bacterial nitrification and potential of N2O production from denitrification to 53 +/- 2% and 55 +/- 3 %, respectively, but decreased them to 47 +/- 2% and 45 +/- 3 %, respectively. Winter grazing had no such effects. Warming and winter grazing may not affect the soil N2O production potential, but climate warming can alter biotic pathways responsible for N2O production process. These findings confirm the importance of soil fungi in the soil N2O production process and how they respond to environmental and land use changes in alpine meadow ecosystems. Therefore, our results provide some new insights into ecological controls on the N2O production process and contribute to the development of an ecosystem nitrogen cycle model.
WOS研究方向	Environmental Sciences & Ecology ; Geology
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000439319600001
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8594]
专题	青藏高原研究所_图书馆
作者单位	1.Tianjin Univ, Sch Environm Sci & Engn, China Australia Ctr Sustainable Urban Dev, Tianjin 300350, Peoples R China; 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China; 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; 4.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China; 5.Univ Wisconsin, Dept Soil Sci, Madison, WI 53706 USA; 6.East China Normal Univ, Tiantong Natl Forest Ecosyst Observat & Res Stn, Ctr Global Change & Ecol Forecasting, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China; 7.Massey Univ, Inst Agr & Environm, Private Bag 11222, Palmerston North 4442, New Zealand; 8.Chinese Acad Forestry, Inst Wetland Res, Beijing Key Lab Wetland Serv & Restorat, Beijing 100091, Peoples R China; 9.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China; 10.Tibet Univ, Sch Sci, 36 Jiangsu St, Lhasa 850012, Tibet Autonomou, Peoples R China.
推荐引用方式 GB/T 7714	Wang, JZ ,Jiang, LL ,Luo, CY ,et al. Fungi regulate the response of the N2O production process to warming and grazing in a Tibetan grassland[J]. BIOGEOSCIENCES,2018,15(14):4447-4457.
APA	Wang, JZ .,Jiang, LL .,Luo, CY .,Ma, WC .,Gu, TB .,...&Shen, QH .(2018).Fungi regulate the response of the N2O production process to warming and grazing in a Tibetan grassland.BIOGEOSCIENCES,15(14),4447-4457.
MLA	Wang, JZ ,et al."Fungi regulate the response of the N2O production process to warming and grazing in a Tibetan grassland".BIOGEOSCIENCES 15.14(2018):4447-4457.