Depth‐related responses of soil microbial communities to experimental warming in an alpine meadow on the Qinghai‐Tibet Plateau

European Journal of Soil Science - Tập 66 Số 3 - Trang 496-504 - 2015
Bin Zhang1, Siming Chen2, Jianfeng Zhang3,1, Xuemei He1, Wenjuan Liu2, Qiong Zhao2, Lina Zhao4, Chunjie Tian1
1Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 4888 Shengbei Street, Changchun 130102, China
2Qilian Shan Station of Glaciology and Ecologic Environment, State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Donggang West Road 320, Lanzhou, 730000 China
3Department of Bioengineering, School of Life Sciences, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118 China
4Cryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Donggang West Road 320, Lanzhou, 730000 China

Tóm tắt

Summary

Although the effect of experimental warming on soil microorganisms has been well documented at surface horizons, less is known about its influence in subsurface horizons. An experiment was therefore carried out in an alpine meadow on the Qinghai‐Tibet Plateau to examine the responses of microbial communities to experimental warming at five soil depths (0–10, 10–20, 20–30, 30–40 and 40–50 cm). Plots were passively warmed for 3 years in open‐top chambers and compared with adjacent control plots at ambient temperature. Soil microbial communities were assessed by using phospholipid fatty acid (PLFA) analysis. Our results showed clearly that 3 years of experimental warming increased microbial biomass consistently and significantly throughout the upper 50‐cm soil profiles, as indicated by the changes in both microbial biomass carbon (C) and total PLFA contents. The composition of microbial communities was also affected significantly by warming, but its effect depended on soil depth. While warming induced a community shift towards bacteria at the 0–10‐cm depth, it tended to shift microbial communities towards fungi at the other, deeper, layers. These results indicate that warming had strong effects on soil microbial communities, including even those residing in subsurface horizons, which may help us to understand the microbial mediation of the feedback between terrestrial C cycling and climate warming.

Từ khóa


Tài liệu tham khảo

10.1038/ismej.2008.58

Blume E., 2002, Surface and subsurface microbial biomass, community structure and metabolic activity as a function of soil depth and season, Applied Soil Ecology, 592, 1

10.1007/s002489900087

10.1016/j.soilbio.2011.09.003

10.1088/1748-9326/7/4/045406

10.1111/j.1574-6941.2010.00860.x

10.1111/j.1574-6941.2012.01350.x

10.1016/j.soilbio.2012.03.011

10.1016/S0038-0717(02)00251-1

10.1016/j.soilbio.2008.07.020

10.1111/j.1365-2389.2000.00346.x

10.1016/j.soilbio.2010.11.021

10.1016/S0929-1393(03)00098-2

Guo D., 2011, The significant climate warming in the northern Tibetan Plateau and its possible causes, International Journal of Climatology, 31, 1257

10.1007/s11104-013-1855-1

10.1002/jpln.201000397

IPCC, 2013, Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change

IUSS Working Group WRB2006.World Reference Base for Soil Resources–a Framework for International Classification Correlation and Communication. World Soil Resources Report No 103 FAO Rome.

10.1007/s00248-003-1037-4

10.1016/j.soilbio.2013.10.041

10.1111/j.1574-6941.2008.00620.x

10.1111/j.1365-2486.1997.gcb136.x

10.2134/jeq1998.00472425002700050036x

10.1111/j.2006.0030-1299.14337.x

Nelson D.W., 1996, Methods of Soil Analysis Part II, 539

Oksanen J.2013.Multivariate Analysis of Ecological Communities in R: Vegan Tutorial[WWW document]. URLhttp://cc.oulu.fi/∼jarioksa/opetus/metodi/vegantutor.pdf[accessed on 20 January 2015].

10.1016/j.soilbio.2005.12.009

10.1111/j.1365-2486.2006.01263.x

10.1007/s11104-010-0391-5

Rutherford P.M., 2006, Soil Sampling and Methods of Analysis, 267

10.1016/0038-0717(87)90052-6

10.1016/S0038-0717(02)00274-2

10.1007/s12665-013-2523-8

10.1128/AEM.01063-10

10.1016/0038-0717(90)90046-3

10.1038/ismej.2011.124

10.1111/j.1365-2486.2005.00902.x

10.1038/nclimate1331

10.2136/sssaj1997.03615995006100020015x

Thông tin
Thông tin xuất bản

European Journal of Soil Science

Tập 66 Số 3

496-504

Thông tin tác giả