[1] Atkinson PM, DashJ, JeganathanC. Amazon vegetation greenness as measured by satellite sensors over the last decade. Geophysical Research Letters, 38, 1-6(2011).

[3] Dai AG. Increasing drought under global warming in observations and models. Nature Climate Change, 3, 52-58(2013).

[4] FuG, Shen ZX. Environmental humidity regulates effects of experimental warming on vegetation index and biomass production in an alpine meadow of Northern Tibet. Plos One, 11(2016).

[5] . Summary for Policymakers. In: Stocker T F, Qin D, Plattner G K, et al.(eds.). Climate change 2013: The physical science basis. Contribution of working group I to the fifth assessment report of the intergovernmental panel on climate change(2013).

[7] Klein JA, HarteJ, Zhao XQ. Experimental warming causes large and rapid species loss, dampened by simulated grazing on the Tibetan Plateau. Ecology Letters, 7, 1170-1179(2004).

[8] Li LY, ZhangJ, WuS et al. Increasing sensitivity of alpine grasslands to climate variability along an elevational gradient on the Qinghai-Tibet Plateau. Science of the Total Environment, 678, 21-29(2019).

[10] Liu DK, Wang JB, Qi SH. Analysis on dry trend based on moisture index in Qinghai Province in the recent 35 years. Research of Soil and Water Conservation, 21, 246-250(2014).

[11] Mu QZ, Zhao MS, Kimball JS et al. A remotely sensed global terrestrial drought severity index. Bulletin of the American Meteorological Society, 94, 83-98(2013).

[12] SeagerR, NaikN, Vecchi GA. Thermodynamic and dynamic mechanisms for large-scale changes in the hydrological cycle in response to global warming. Journal of Climate, 23, 4651-4668(2010).

[13] SheffieldJ, Wood EF, Roderick ML. Little change in global drought over the past 60 years. Nature, 491, 435-438(2012).

[14] Shen ZX, FuG, Yu CQ et al. Relationship between the growing season maximum enhanced vegetation index and climatic factors on the Tibetan Plateau. Remote Sensing, 6, 6765-6789(2014).

[15] Shen ZX, Li YL, FuG. Response of soil respiration to short-term experimental warming and precipitation pulses over the growing season in an alpine meadow on the Northern Tibet. Applied Soil Ecology, 90, 35-40(2015).

[16] Shen ZX, Wang JW, SunW et al. 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 of Ecology, 64, 125-129(2016).

[17] SunD, KafatosM. Note on the NDVI-LST relationship and the use of temperature-related drought indices over North America. Geophysical Research Letters, 34, 497-507(2007).

[18] SunJ, Cheng GW, Li WP et al. On the variation of NDVI with the principal climatic elements in the Tibetan Plateau. Remote Sensing, 5, 1894-1911(2013).

[19] Trenberth KE, Dai AG, van der SchrierG et al. Global warming and changes in drought. Nature Climate Change, 4, 17-22(2014).

[20] WangL, ChenW. A CMIP5 multimodel projection of future temperature, precipitation, and climatological drought in China. International Journal of Climatology, 34, 2059-2078(2014).

[21] WangM, Zhou CP, WuL et al. Wet-drought pattern and its relationship with vegetation change in the Qinghai-Tibetan Plateau during 2001-2010. Arid Land Geography, 36, 49-56(2013).

[22] Wang SH, SunW, Li SW et al. Interannual variation of the growing season maximum normalized difference vegetation index, MNDVI, and its relationship with climatic factors on the Tibetan Plateau. Polish Journal of Ecology, 63, 424-439(2015).

[23] Wang SP, Duan JC, Xu GP et al. Effects of warming and grazing on soil N availability, species composition, and ANPP in an alpine meadow. Ecology, 93, 2365-2376(2012).

[24] Yang XH, ZhuoG, LuoB. Drought monitoring in the Tibetan Plateau based on MODIS dataset. Journal of Desert Research, 34, 527-534(2014).

[25] YuanL, LiuY, Ma PF. Analysis of temporal and spatial characteristics of drought in Tibet from 1981 to 2013 based on standardized precipitation index. China Agronomy Bulletin, 31, 228-234(2015).

[26] Yu CQ, Han FS, FuG. Effects of 7 years experimental warming on soil bacterial and fungal community structure in the Northern Tibet alpine meadow at three elevations. Science of the Total Environment, 655, 814-822(2019).

[27] Yu CQ, Wang JW, Shen ZX et al. Effects of experimental warming and increased precipitation on soil respiration in an alpine meadow in the Northern Tibetan Plateau. Science of the Total Environment, 647, 1490-1497(2019).

[28] ZhangL, Guo HD, JiL et al. Vegetation greenness trend (2000 to 2009) and the climate controls in the Qinghai-Tibetan Plateau. Journal of Applied Remote Sensing, 7(2013).

[29] Zhong ZM, Shen ZX, FuG. Response of soil respiration to experimental warming in a highland barley of the Tibet. Springer Plus, 5(2016).