Ecosystem

Response of Plant Growth and Biomass Accumulation to Short-term Experimental Warming in a Highland Barley System of the Tibet

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  • Lhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China

Received date: 2017-12-18

  Revised date: 2018-02-25

  Online published: 2018-03-30

Supported by

The National Natural Science Foundation of China (31370458, 41171084), the Youth Innovation Research Team Project of Key Laboratory of Ecosystem Network Observation and Modeling (LENOM2016Q0002), the Science and Technology Service Network Plan of Chinese Academy of Science (KFJ-EW-STS-070), and the Science and Technology Plan Projects of Tibet Autonomous Region (Forage Grass Industry) and the National Key Research and Development Plan of China (2016YFC0502005;2016YFC0502006).

Abstract

Highland barley is an important staple food in the Tibet, and the Tibetan Plateau is experiencing obvious climatic warming. However, few studies have examined the warming effects on highland barley growth and biomass allocation under conditions of controlled experimental warming. This limits our ability to predict how highland barley will change as the climate changes in the future. An experiment of field warming at two magnitudes was performed in a highland barley system of the Tibet beginning in late May, 2014. Infrared heaters were used to increase soil temperature. At the end of the warming experiment (September 14, 2014), plant growth parameters (plant height, basal diameter, shoot length and leaf number), biomass accumulation parameters (total biomass, root biomass, stem biomass, leaf biomass and spike biomass), and carbon and nitrogen concentration parameters (carbon concentration, nitrogen concentration, the ratio of carbon to nitrogen concentration in root, stem, leaf and spike) were sampled. The low- and high-level experimental warming significantly increased soil temperature by 1.52 and 1.98 °C, respectively. Average soil moisture was significantly decreased by 0.03 m3 m-3 under the high-level experimental warming, while soil moisture under the low-level experimental warming did not significantly change. The low- and high-level experimental warming did not significantly affect plant growth parameters, biomass accumulation parameters, and carbon and nitrogen concentration parameters. There were also no significant differences of plant growth parameters, biomass accumulation parameters, and carbon and nitrogen concentration parameters between the low- and high-level experimental warming. Our findings suggest that the response of highland barley growth, total and component biomass accumulation, and carbon and nitrogen concentration to warming did not linearly change with warming magnitude in the Tibet.

Cite this article

FU Gang, SUN Wei, LI Shaowei, ZHONG Zhiming . Response of Plant Growth and Biomass Accumulation to Short-term Experimental Warming in a Highland Barley System of the Tibet[J]. Journal of Resources and Ecology, 2018 , 9(2) : 203 -208 . DOI: 10.5814/j.issn.1674-764x.2018.02.010

References

[1] Arft A M, Walker M D, Gurevitch J, et al.1999. Responses of tundra plants to experimental warming: Meta-analysis of the international tundra experiment. Ecological Monographs, 69(4): 491-511.
[2] Carrara A, Janssens I A, Yuste J C, et al.2004. Seasonal changes in photosynthesis, respiration and NEE of a mixed temperate forest. Agricultural and Forest Meteorology, 126(1-2): 15-31.
[3] De Boeck H J, Lemmens C, Vicca S, et al.2007. How do climate warming and species richness affect CO2 fluxes in experimental grasslands? New Phytologist, 175(3): 512-522.
[4] DeMarco J, Mack M C, Bret-Harte M S, et al.2014. Long-term experimental warming and nutrient additions increase productivity in tall deciduous shrub tundra. Ecosphere, 5(6): doi: 10.1890/es13-00281.1
[5] Ding L L, Cheng H, Liu Z F, et al.2013. Experimental warming on the rice-wheat rotation agroecosystem. Plant Science Journal, 31(1): 49-56. (in Chinese)
[6] Fang S-b, Tan K-y, Ren S-x2010. Winter wheat yields decline with spring higher night temperature by controlled experiments. Scientia Agricultura Sinica, 43(15): 3251-3258. (in Chinese)
[7] Fu G, Shen Z X, Sun W, et al.2015a. A meta-analysis of the effects of experimental warming on plant physiology and growth on the Tibetan Plateau. Journal of Plant Growth Regulation, 34(1): 57-65.
[8] Fu G, Shen Z X, Zhang X Z2018. Increased precipitation has stronger effects on plant production of an alpine meadow than does experimental warming in the Northern Tibetan Plateau. Agricultural & Forest Meteorology, 249: 11-21.
[9] Fu G, Sun W, Yu C Q, et al.2015b. Clipping alters the response of biomass production to experimental warming: a case study in an alpine meadow on the Tibetan Plateau, China. Journal of Mountain Science, 12(4): 935-942.
[10] Hou R, Ouyang Z, Li Y, et al.2012. Is the change of winter wheat yield under warming caused by shortened reproductive period? Ecology & Evolution, 2(12): 2999-3008.
[11] 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 [Stocker, T.F., D. Qin, G.-K. Plattner, M. Tignor, S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.
[12] Klein J A, Harte J, Zhao X Q2007. Experimental warming, not grazing, decreases rangeland quality on the Tibetan Plateau. Ecological Applications, 17(2): 541-557.
[13] Li C Y, Tang Y, Luo H, et al.2013. Local farmers' perceptions of climate change and local adaptive strategies: a case study from the middle Yarlung Zangbo River Valley, Tibet, China. Environmental Management, 52(4): 894-906.
[14] Lin D L, Xia J Y, Wan S Q2010. Climate warming and biomass accumulation of terrestrial plants: a meta-analysis. New Phytologist, 188(1): 187-198.
[15] Nagy Z, Pinter K, Czobel S, et al.2007. The carbon budget of semi-arid grassland in a wet and a dry year in Hungary. Agriculture Ecosystems & Environment, 121(1-2): 21-29.
[16] Rustad L E, Campbell J L, Marion G M, et al.2001. A meta-analysis of the response of soil respiration, net nitrogen mineralization, and aboveground plant growth to experimental ecosystem warming. Oecologia, 126(4): 543-562.
[17] Shen Z X, Fu G, Yu C Q, et al.2014. Relationship between the growing season maximum enhanced vegetation index and climatic factors on the Tibetan Plateau. Remote Sensing, 6(8): 6765-6789.
[18] Shi F S, Che H F, Wu N2008. Effect of experimental warming on carbon and nitrogen content of sub-alpine meadow in Northwestern Sichuan (in Chinese with English abstract). Bulletin of Botanical Research, 28(6): 730-736. (in Chinese)
[19] Shi J J, Jiang X D, Shi H B, et al.2015. Effect of winter warming treatments on photosynthesis and yield of wheat. Journal of Triticeae Crops, 35(3): 352-356. (in Chinese)
[20] Tao F, Yokozawa M, Xu Y, et al.2006. Climate changes and trends in phenology and yields of field crops in China, 1981-2000. Agricultural & Forest Meteorology, 138(1-4): 82-92.
[21] Tian Y L, Chen J, Deng A X, et al.2011. Effects of asymmetric warming on the growth characteristics and yield components of winter wheat under free air temperature increased. Chinese Journal of Applied Ecology, 22(3): 681-686. (in Chinese)
[22] Wan Y F, You S C, Li Y E, et al.2014. Influence of elevated atmospheric CO2 concentration and temperature on growth and yield of early rice. Journal of Agro-Environment Science, 33(9): 1693-1698. (in Chinese)
[23] Wang J W, Fu G, Zhang G Y, et al.2017. The effect of higher warming on vegetation indices and biomass production is dampened by greater drying in an alpine meadow on the Northern Tibetan Plateau. Journal of Resources and Ecology, 8(1): 105-112.
[24] Xu M H, Xue X2013. Analysis on the effects of climate warming on growth and phenology of alpine plants. Journal of Arid Land Resources and Environment, 27(3): 137-141. (in Chinese)
[25] Xu Z F, Hu T X, Wang K Y, et al.2009. Short-term responses of phenology, shoot growth and leaf traits of four alpine shrubs in a timberline ecotone to simulated global warming, Eastern Tibetan Plateau, China. Plant Species Biology, 24(1): 27-34.
[26] Xu Z F, Yin H J, Xiong P, et al.2012. Short-term responses of Picea asperata seedlings of different ages grown in two contrasting forest ecosystems to experimental warming. Environmental and Experimental Botany, 77(1-11).
[27] Yang Y, Wang G X, Klanderud K, et al.2011. Responses in leaf functional traits and resource allocation of a dominant alpine sedge (Kobresia pygmaea) to climate warming in the Qinghai-Tibetan Plateau permafrost region. Plant and Soil, 349(1-2): 377-387.
[28] Zhang K, Wang R Y, Feng Q, et al.2015a. Effects of simulated warming and precipitation change on growth characteristics and grain yield of spring wheat in semi-arid area. Transactions of the Chinese Society of Agricultural Engineering, 31(S1): 161-170. (in Chinese)
[29] Zhang Z, Song X, Tao F, et al.2015b. Climate trends and crop production in China at county scale, 1980 to 2008. Theoretical & Applied Climatology, 123(1): 1-12.
[30] Zhong Z M, Shen Z X, Fu G2016. Response of soil respiration to experimental warming in a highland barley of Tibet SpringerPlus, 5(137): doi: 10.1186/s40064-016-1761-0.
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