[1] N J R Allan. Accessibility and altitudinal zonation models of mountains. Mountain Research & Development, 6, 185-194(1986).

[2] M Beniston. Climatic change in mountain regions: A review of possible impacts. Climatic Change, 59, 5-31(2003).

[3] R Callaway. Positive interactions in plant communities and the individualistic-continuum concept. Oecologia, 112, 143-149(1997).

[4] D L Z Ci. Survey of Mount Qomolangma Nature Reserve. China Tibetology, 1, 3-22(1997).

[5] S Dullinger. Modelling climate change-driven treeline shifts: Relative effects of temperature increase, dispersal and invisibility. Journal of Ecology, 92, 241-252(2004).

[6] W Gian-Reto, P Eric, C Peter et al. Ecological responses to recent climate change. Nature, 416, 389-395(2002).

[7] G Grabherr, M Gottfried, H Paull. Climate effects on mountain plants. Nature, 369, 448-448(1994).

[8] H Haberl, K H Erb, F Krausmann et al. Quantifying and mapping the human appropriation of net primary production in earth’s terrestrial ecosystems. Proceedings of the National Academy of Sciences of the United States of America, 104, 12942-12945(2007).

[9] F He, S Vavrus, J Kutzbach et al. Simulating global and local surface temperature changes due to Holocene anthropogenic land cover change. Geophysical Research Letters, 41, 623-631(2014).

[10] X X Li, E Y Liang, J Gricar et al. Critical minimum temperature limits xylogenesis and maintains treelines on the southeastern Tibetan Plateau. Science Bulletin, 62, 804-812(2017).

[11] E Y Liang, Y F Wang, S L Piao et al. Species interactions slow warming-induced upward shifts of treelines on the Tibetan Plateau. Proceedings of the National Academy of Sciences of the United States of America, 113, 4380-4385(2016).

[12] H Mooney, A Duraiappah, A Larigauderie. Evolution of natural and social science interactions in global change research programs. Proceedings of the National Academy of Sciences of the United States of America, 110, 3665-3672(2013).

[13] The characteristics of soil geographical distribution in the Mount Qomolangma area. In: “A Report on the Scientific Investigation of the Mount Qomolangma Area”, Tibet Scientific Expedition Team of the Chinese Academy of Sciences(1975).

[14] C C Mu. Succession of Larix olgensis and Betula platyphlla-marsh ecotone communities in Changbai Mountain. Chinese Journal of Applied Ecology, 14, 1813-1819(2003).

[15] Y Nie, Y L Zhang, L S Liu et al. Glacial change in the vicinity of Mt. Qomolangma (Everest), central high Himalayas since 1976. Journal of Geographical Sciences, 20, 667-686(2010).

[16] A Pitman, F Avila, G Abramowitz et al. Importance of background climate in determining impact of land-cover change on regional climate. Nature Climate Change, 1, 472-475(2011).

[17] H Walter. Vegetation of the Earth in Relation to Climate and the Eco-physiological Conditions(1973).

[18] X Wu, J G Gao, Y L Zhang et al. Land cover status in the Koshi River Basin, Central Himalayas. Journal of Resources and Ecology, 8, 10-19(2017).

[19] J Xu, B P Zhang, J Tan et al. Spatial relationship between altitudinal vegetation belts and climatic factors in the Qinghai-Tibetan Plateau. Journal of Mountain Science, 27, 663-670(2009).

[20] Y H Yao, M Xu, B P Zhang. Implication of the heating effect of the Tibetan Plateau for mountain altitudinal belts. Acta Geographica Sinica, 70, 407-419(2015).

[21] J W Zhang, S Jiang. A primary study on the vertical vegetation belt of Mt. Jolmo-Lungma (Everest) Region and its relationship with horizontal zone. Acta Botanica Sinica, 15, 221-236(1973).

[22] Y L Zhang, J G Gao, L S Liu et al. NDVI-based vegetation changes and their response to climate change from 1982 to 2011: A case study in the Koshi River Basin in the middle Himalayas. Global and Planetary Change, 108, 139-148(2013).