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Abstrakty
A warming experiment with two magnitudes was performed in an alpine meadow of Northern Tibet since late June, 2013. Open top chambers (OTCs) with two top diameters (0.60 m and 1.00 m) were used to increase soil temperature. Soil respiration (Rs) was measured during the growing season in 2013–2014. The OTCs with top diameters of 1.00 m and 0.60 m increased soil temperature by 1.30 and 3.10oC, respectively, during the whole study period, but decreased soil moisture by 0.02 and 0.05 m³ m⁻³, respectively. However, the two patters of OTCs did not affect Rs. These results implied that a higher warming did not result in a higher Rs but a greater soil drying. Therefore, a higher warming may not cause a higher soil respiration, which was most likely due to the fact that a higher warming may result in a greater soil drying.
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Opis fizyczny
p.125-129,fig.,ref.
Twórcy
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
autor
- Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Key Laboratory of Ecosystem Network Observation and Modeling, Lhasa Plateau Ecosystem Research Station, Beijing 100101, China
Bibliografia
- Fu G., Shen Z., Zhang X., Zhou Y., Zhang Y. 2012 — Response of microbial biomass to grazing in an alpine meadow along an elevation gradient on the Tibetan Plateau — Eur. J. Soil Biol. 52: 27–29.
- Fu G., Zhang X.-Z., Zhou Y.-T., Yu C.-Q., Shen Z.-X. 2014 — Partitioning sources of ecosystem and soil respiration in an alpine meadow of Tibet Plateau using regression method — Pol. J. Ecol. 62: 17–24.
- IPCC 2013 — Summary for Policymakers (In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, Eds: T.F. Stocker, D. Qin, G.-K. Plattner, M. Tignor, S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex, P.M. Midgley) — Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.
- Lellei-Kovács E., Kovács-Láng E., Kalapos T., Botta-Dukát Z., Barabás S., Beier C. 2008 — Experimental warming does not enhance soil respiration in a semiarid temperate forest-steppe ecosystem — Community. Ecol. 9: 29–37.
- Rustad L.E., Campbell J.L., Marion G.M., Norby R.J., Mitchell M.J., Hartley A.E., Cornelissen J.H.C., Gurevitch J., Gcte N. 2001 — A meta-analysis of the response of soil respiration, net nitrogen mineralization, and aboveground plant growth to experimental ecosystem warming — Oecologia, 126: 543–562.
- Shen Z.X., Li Y.L., Fu G. 2015 — Response of soil respiration to short-term experimental warming and precipitation pulses over the growing season in an alpine meadow on the Northern Tibet — Appl. Soil Ecol. 90: 35–40.
- Sun J.F., Peng C.H., St Onge B., Berninger F., McCaughey H., Lei X.D. 2011 — Meta-analysis of the effects of soil warming on soil respiration in forest ecosystems — Pol. J. Ecol. 59: 709–715.
- Suseela V. , Dukes J.S. 2013 — The responses of soil and rhizosphere respiration to simulated climatic changes vary by season — Ecology, 94: 403–413.
- Wan S., Norby R.J., Ledford J., Weltzin J.F. 2007 — Responses of soil respiration to elevated CO2, air warming, and changing soil water availability in a model old-field grassland — Global Change Biol. 13: 2411–2424.
- Wang X., Liu L., Piao S., Janssens I.A., Tang J., Liu W., Chi Y., Wang J., Xu S. 2014 — Soil respiration under climate warming: differential response of heterotrophic and autotrophic respiration — Global Change Biol. 20: 3229–3237.
- Xu M.-H., Peng F., You Q.-G., Guo J., Tian X.-F., Liu M., Xue X. 2014 — Initial effects of experimental warming on temperatrue, moisture, and vegetation characteristics in an alpine meadow on the Qinghai-Tibetan Plateau — Pol. J. Ecol. 62: 493–509.
- Xu W.F., Yuan W.P., Dong W.J., Xia J.Z., Liu D., Chen Y. 2013 — A meta-analysis of the response of soil moisture to experimental warming — Environ. Res. Lett. 8: https://doi.org/10.1088/1748- 9326/1088/1084/044027.
- Zhang X.Z., Shen Z.X., Fu G. 2015 — A meta-analysis of the effects of experimental warming on soil carbon and nitrogen dynamics on the Tibetan Plateau — Appl. Soil Ecol. 87: 32–38.
Typ dokumentu
Bibliografia
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