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Grazing exclusion reduced soil respiration but increased its temperature sensitivity in a Meadow Grassland on the Tibetan Plateau

文献类型：期刊论文

作者Xu, Gexi1; Chen, Yizhao10; Luo, Yiqi11,12; Wang, Junfeng6,7; Zhou, Xuhui5; Shi, Weiyu2,3; Hruska, Tracy8; Cao, Junji2,3,9; Chen, Ji2,3,4; Zhang, Baocheng2,3
刊名ECOLOGY AND EVOLUTION
出版日期2016-02-01
卷号6期号:3页码:675-687
关键词Grazing Exclusion Microbial Biomass Carbon Plant Productivity Soil Respiration Temperature Sensitivity Tibetan Plateau
DOI10.1002/ece3.1867
文献子类Article
英文摘要Understanding anthropogenic influences on soil respiration (R-s) is critical for accurate predictions of soil carbon fluxes, but it is not known how R-s responds to grazing exclusion (GE). Here, we conducted a manipulative experiment in a meadow grassland on the Tibetan Plateau to investigate the effects of GE on R-s. The exclusion of livestock significantly increased soil moisture and above-ground biomass, but it decreased soil temperature, microbial biomass carbon (MBC), and R-s. Regression analysis indicated that the effects of GE on R-s were mainly due to changes in soil temperature, soil moisture, and MBC. Compared with the grazed blocks, GE significantly decreased soil carbon release by 23.6% over the growing season and 21.4% annually, but it increased the temperature sensitivity (Q(10)) of R-s by 6.5% and 14.2% for the growing season and annually respectively. Therefore, GE may reduce the release of soil carbon from the Tibetan Plateau, but under future climate warming scenarios, the increases in Q(10) induced by GE could lead to increased carbon emissions.
WOS关键词BELOW-GROUND BIOMASS ; ALPINE GRASSLAND ; NORTHERN CHINA ; CO2 EFFLUX ; MICROBIAL RESPIRATION ; MOUNTAIN GRASSLANDS ; PLANT-COMMUNITIES ; SEASONAL PATTERNS ; INNER-MONGOLIA ; CLIMATE-CHANGE
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000369974900004
源URL[http://ir.ieecas.cn/handle/361006/5823]  
专题地球环境研究所_粉尘与环境研究室
作者单位1.Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, Beijing 100091, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.E China Normal Univ, Sch Ecol & Environm Sci, Ctr Global Change & Ecol Forecasting, Shanghai 200062, Peoples R China
6.Chinese Acad Sci, State Key Lab Frozen Soil Engn Cold & Arid Reg En, Lanzhou 730000, Peoples R China
7.Chinese Acad Sci, Engn Res Inst, Lanzhou 730000, Peoples R China
8.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA
9.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
10.Nanjing Univ, Sch Life Sci, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Gexi,Chen, Yizhao,Luo, Yiqi,et al. Grazing exclusion reduced soil respiration but increased its temperature sensitivity in a Meadow Grassland on the Tibetan Plateau[J]. ECOLOGY AND EVOLUTION,2016,6(3):675-687.
APA Xu, Gexi.,Chen, Yizhao.,Luo, Yiqi.,Wang, Junfeng.,Zhou, Xuhui.,...&Zhang, Baocheng.(2016).Grazing exclusion reduced soil respiration but increased its temperature sensitivity in a Meadow Grassland on the Tibetan Plateau.ECOLOGY AND EVOLUTION,6(3),675-687.
MLA Xu, Gexi,et al."Grazing exclusion reduced soil respiration but increased its temperature sensitivity in a Meadow Grassland on the Tibetan Plateau".ECOLOGY AND EVOLUTION 6.3(2016):675-687.

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来源：地球环境研究所

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