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

  • 1. 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;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China;
    4. XiZang Agriculture and Animal Husbandry College, Linzhi 860000, China

Received date: 2016-11-08

  Online published: 2017-01-20

Supported by

National Natural Science Foundation of China (31600432), National Key Research Projects of China (2016YFC0502005; 2016YFC0502006), Chinese Academy of Science Western Light Talents Program (Response of livestock carrying capability to climatic change and grazing in the alpine meadow of Northern Tibetan Plateau), the Science and Technology Plan Projects of Tibet Autonomous Region (Forage Grass Industry) and the National Science and Technology Plan Project of China ( 2013BAC04B01, 2011BAC09B03, 2007BAC06B01).


In order to understand whether or not the response of vegetation indices and biomass production to warming varies with warming magnitude, an experiment of field warming at two magnitudes was conducted in an alpine meadow on the northern Tibetan Plateau beginning in late June, 2013. The normalized difference vegetation index (NDVI), green normalized difference vegetation index (GNDVI) and soil adjusted vegetation index (SAVI) data were obtained using a Tetracam Agricultural Digital Camera in 2013-2014. The gross primary production (GPP) and aboveground plant biomass (AGB) were modeled using the surface measured NDVI and climatic data during the growing seasons (i.e. June-September) in 2013-2014. Both low and high warming significantly increased air temperature by 1.54 and 4.00°C, respectively, and significantly increased vapor pressure deficit by 0.13 and 0.31 kPa, respectively, in 2013-2014. There were no significant differences of GNDVI, AGB and ANPP among the three warming treatments. The high warming significantly reduced average NDVI by 23.3% (-0.06), while the low warming did not affect average NDVI. The low and high warming significantly decreased average SAVI by 19.0% (-0.04) and 27.4% (-0.05), respectively, and average GPP by 24.2% (i.e. 0.21 g C m-2 d-1) and 44.0% (i.e. 0.39 g C m-2 d-1), respectively. However, the differences of the average NDVI, SAVI, and GPP between low and high warming were negligible. Our findings suggest that a greater drying may dampen the effect of a higher warming on vegetation indices and biomass production in alpine meadow on the northern Tibetan Plateau.

Cite this article

WANG Jiangwei, FU Gang, ZHANG Guangyu, SHEN Zhenxi . 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[J]. Journal of Resources and Ecology, 2017 , 8(1) : 105 -112 . DOI: 10.5814/j.issn.1674-764x.2017.01.013


[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] Barnard R, Leadley P W, Hungate B A. 2005. Global change, nitrification, and denitrification: A review. Global Biogeochemical Cycles , 19(1): 341-356.
[3] Blankinship J C, Niklaus P A, Hungate B A. 2011. A meta-analysis of responses of soil biota to global change. Oecologia , 165(3): 553-565.
[4] Bouskill N J, Riley W J, Tang J Y. 2014. Meta-analysis of high-latitude nitrogen-addition and warming studies implies ecological mechanisms overlooked by land models. Biogeoscience Discussions , 11(11): 1-41.
[5] Dormann C F, Woodin S J. 2002. Climate change in the Arctic: using plant functional types in a meta-analysis of field experiments. Functional Ecology , 16(1): 4-17.
[6] Fu G, Shen Z X, Zhong Z M. 2015. Initial response of normalized difference vegetation index, green normalized difference vegetation index and soil adjusted vegetation index to infrared warming in highland barley of Tibet. Ecology & Environmental Sciences , 03: 365- 371. in Chinese.
[7] Fu G, S W, Yu C Q, et al.2015. Clipping alters the response of biomass production to experimental warming: a case study in an alpine meadow on the Tibetan Plateau, China[J]. Journal of Mountain Science , 12(4): 935-942.
[8] Garcia-Palacios P, Vandegehuchte M L, Shaw E A, et al. 2015. Are there links between responses of soil microbes and ecosystem functioning to elevated CO 2 , N deposition and warming? A global perspective. Global Change Biology , 21(4): 1590-1600.
[9] 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.
[10] Jiang L, Guo R, Zhu T C, et al. 2012. Water-and plant-mediated responses of ecosystem carbon fluxes to warming and nitrogen addition on the Songnen grassland in Northeast China. Plos One , 7(9).
[11] Klein J A, Harte J, Zhao X Q. 2007. Experimental warming, not grazing, decreases rangeland quality on the Tibetan Plateau. Ecological Applications , 17(2): 541-557.
[12] Li N, Wang G X, Yang Y, et al. 2011. Plant production, and carbon and nitrogen source pools, are strongly intensified by experimental warming in alpine ecosystems in the Qinghai-Tibet Plateau. Soil Biol. Biochem , 43(5): 942-953.
[13] Lin D L, Xia J Y, Wan S Q. 2010. Climate warming and biomass accumulation of terrestrial plants: a meta-analysis. New Phytologist , 188(1): 187-198.
[14] Liu X D, Cheng Z G, Yan L B. 2009. Elevation dependency of recent and future minimum surface air temperature trends in the Tibetan Plateau and its surroundings. Global & Planetary Change , 68(3): 164-174.
[15] Lu M, Zhou X H, Yang al. 2013. Responses of ecosystem carbon cycle to experimental warming: a meta-analysis. Ecology , 94(3): 726-738.
[16] Peng D L, Zhang B, Liu L Y, et al. 2012. Characteristics and drivers of global NDVI-based FPAR from 1982 to 2006. Global Biogeochemical Cycles , 26(3): 424-424.
[17] Peng F, You Q G, Xu M H, et al. 2014. Effects of warming and clipping on ecosystem carbon fluxes across two hydrologically contrasting years in an alpine meadow of the Qinghai-Tibet Plateau. Plos One , 9(10): e109319-e109319
[18] Rangwala I, Miller J R. 2012. Climate change in mountains: a review of elevation-dependent warming and its possible causes. Climatic Change , 114(3): 527-547.
[19] Reichstein M, Ciais P, Papale D, et al. 2007. Reduction of ecosystem productivity and respiration during the European summer 2003 climate anomaly: a joint flux tower, remote sensing and modelling analysis. Global Change Biology , 13(3): 634-651.
[20] 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.
[21] Sharp E D, Sullivan P F, Steltzer H, et al. 2013. Complex carbon cycle responses to multi-level warming and supplemental summer rain in the high Arctic. Global Change Biology , 19(6): 1780-1792.
[22] Shen Z X, Wang J W, Sun W, et al. 2016. The soil drying along the increase of warming mask the relation between temperature and soil respiration in an alpine meadow of Northern Tibet. Polish Journal Ecology , 64.
[23] Suseela V, Dukes J S, 2013. The responses of soil and rhizosphere respiration to simulated climatic changes vary by season. Ecology , 94(2): 403-413.
[24] Xiong J, Sun H, Peng F, et al. 2014. Characterizing changes in soil bacterial community structure in response to short-term warming. FEMS Microbiology Ecology , 89(2): 281-292.
[25] Xu M H, Xue X. 2013. A research on summer vegetation characteristics and short-time responses to experimental warming of alpine meadow in the Qinghai-Tibetan Plateau. Acta Ecologica Sinica , 33(7): 2071-2083, in Chinese
[26] Yang Pang-Wan, Fu Gang, Li Yun-Long, et al. 2014. Aboveground biomass assessment in the Northern Tibet Plateau using ground-level remotely-sensed data. Pratacultural Science , 31(7): 1211-1217, in Chinese
[27] Zhang P C, Hirota M, Shen H H, et al. 2009. Characterization of CO 2 flux in three Kobresia meadows differing in dominant species. Journal of Plant Ecology , 2(4): 187-196.
[28] Zhao J Z, Liu W, Zhou Y B. 2012. The responses of cyperaceae PFTs plant to simulating warming in alpine kobresia humilis meadow . Qinghai Prataculture , in Chinese
[29] Zhong Z M, Shen Z X, Fu G. 2016. Response of soil respiration to experimental warming in a highland barley of the Tibet. SpringerPlus , 5(1): 1-10.