[1] Oreskes N. The scientific consensus on climate change. Science, 2004, 306: 1686-1686 [2] IPCC. Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge: University of Cambridge Press, 2014 [3] Liu Z-W (刘章文), Chen R-S (陈仁升), Song Y-Y (宋耀选). Advance in study of the relationship between shrub and snow cover in cold regions. Journal of Glacio-logy and Geocryology (冰川冻土), 2014, 36(6): 1582-1590 (in Chinese) [4] He R-L (和润莲), Chen Y-M (陈亚梅), Deng C-C (邓长春), et al. Invertebrate diversity in foliar litter of three shrubs in the alpine timberline of western Sichuan. Acta Ecologica Sinica (生态学报), 2016, 36(17): 5497-5507 (in Chinese) [5] Dick RP, Breakwell DP, Turco RF, et al. Soil enzyme activities and biodiversity measurements as integrative microbiological indicators// Doran JW, Jones AJ, eds. Methods for Assessing Soil Quality. Madison, VI: SSSA, 1996: 247-271 [6] Yanai Y, Toyota K, Okazaki M. Effects of successive soil freeze-thaw cycles on soil microbial biomass and organic matter decomposition potential of soils. Soil Science and Plant Nutrition, 2004, 50: 821-829 [7] Xiong Q, Pan K, Zhang L, et al. Warming and nitrogen deposition are interactive in shaping surface soil microbial communities near the alpine timberline zone on the eas-tern Qinghai-Tibet Plateau, southwestern China. Applied Soil Ecology, 2016, 101: 72-83 [8] Chen Z (陈 智), Yin H-J (尹华军), Wei Y-Y (卫云燕), et al. Short-term effects of night warming and nitrogen addition on soil available nitrogen and microbial properties in subalpine coniferous forest, Western Sichuan, China. Chinese Journal of Plant Ecology (植物生态学报), 2010, 34(11): 1254-1264 (in Chinese) [9] Li M-C (李明财), Luo T-X (罗天祥), Zhu J-J (朱教君), et al. Advances in formation mechanism of alpine timberline and associated physio-ecological characteristics of plants. Acta Ecologica Sinica (生态学报), 2008, 28(11): 5583-5591 (in Chinese) [10] Yang Y-L (杨玉莲), Wu F-Z (吴福忠), He Z-H (何振华), et al. Effects of snow pack removal on soil microbial biomass carbon and nitrogen and the number of soil culturable microorganisms during wintertime in alpine Abies faxoniana forest of western Sichuan, Southwest China. Chinese Journal of Applied Ecology (应用生态学报), 2012, 23(7): 1809 (in Chinese) [11] Li H-J (李洪杰), Liu J-W (刘军伟), Yang L (杨 林), et al. Effects of simulated climate warming on soil microbial biomass carbon, nitrogen and phosphorus of alpine forest. Chinese Journal of applied and Environmental Biology (应用与环境生物学报), 2016, 22(4): 599-605 (in Chinese) [12] Yang L (杨 林), Chen Y-M (陈亚梅), He R-L (和润莲), et al. Responses of soil microbial community structure and function to simulated warming in alpine forest. Chinese Journal of Applied Ecology (应用生态学报), 2016, 27(9): 2855-2863 (in Chinese) [13] Deng C-C (邓长春), Chen Y-M (陈亚梅), He R-L (和润莲), et al. Leaching of dissolved organic carbon from decomposing litter during the snow cover period at an alpine timberline ectone in Western Sichuan, China. Acta Ecologica Sinica (生态学报), 2014, 33(11): 2921-2929 (in Chinese) [14] Wang C-Y (王春阳), Zhou J-B (周建斌), Wang X (王 祥), et al. Contents and Biodegradation of soluble organic carbon in different plant residues from the Loess Plateau. Environmental Science (环境科学), 2011, 32(4): 1139-1145 (in Chinese) [15] Uselman SM, Qualls RG, Lilienfein J. Quality of soluble organic C, N, and P produced by different types and species of litter: Root litter versus leaf litter. Soil Biology & Biochemistry, 2012, 54: 57-67 [16] Frostegård Å, Tunlid A, Bååth E. Phospholipid fatty acid composition, biomass, and activity of microbial communities from two soil types experimentally exposed to different heavy metals. Applied and Environmental Microbiology, 1993, 59: 3605-3617 [17] White DC, Davis WM, Nickels JS, et al. Determination of the sedimentary microbial biomass by extractible lipid phosphate. Oecologia, 1979, 40: 51-62 [18] Bligh EG, Dyer WJ. A rapid method of total lipid extraction and purification. Canadian Journal of Biochemi-stry & Physiology, 1959, 37: 911-917 [19] Cao Y, Li Y, Li C, et al. Relationship between pre-sence of the desert shrub Haloxylon ammodendron and microbial communities in two soils with contrasting textures. Applied Soil Ecology, 2016, 103: 93-100 [20] Zhong W-H (钟文辉), Cai Z-C (蔡祖聪). Methods for studying soil microbial diversity. Chinese Journal of Applied Ecology (应用生态学报), 2004, 15(5): 899-904 (in Chinese) [21] Hollister RD, Webber PJ. Biotic validation of small open-top chambers in a tundra ecosystem. Global Change Biology, 2000, 6: 835-842 [22] Gadek B, Leszkiewicz J. Influence of snow cover on ground surface temperature in the zone of sporadic permafrost, Tatra Mountains, Poland and Slovakia. Cold Regions Science & Technology, 2010, 60: 205-211 [23] Allison SD, Treseder KK. Warming and drying suppress microbial activity and carbon cycling in boreal forest soils. Global Change Biology, 2008, 14: 2898-2909 [24] Rustad LE, Campbell JLMarion GM, Norby RJ, et al. A meta-analysis of the response of soil respiration, net nitrogenmineralization, and aboveground plant growth to experimental ecosystem warming. Oecologia, 2001, 126: 543-562 [25] Xu Z-F (徐振锋), Tang Z (唐 正), Wang C (万 川), et al. Effects of simulated warming on soil enzyme activities in two subalpine coniferous forests in west Sichuan. Chinese Journal of Applied Ecology (应用生态学报), 2010, 21(11): 2727-2733 (in Chinese) [26] Tan B (谭 波), Wu F-Z (吴福忠), Qin J-L (秦嘉励), et al. Dynamics of soil microbial biomass and enzyme activity in the subalpine/alpine forests of western Sichuan. Ecology and Environment Sciences (生态环境学报), 2014, 23(8): 1265-1271 (in Chinese) [27] Zhang W-J (张卫建), Xu Q (许 泉), Wang X-K (王绪奎), et al. Impacts of experimental atmospheric warming on soil microbial community structure in a tallgrass prairie. Acta Ecologica Sinica (生态学报), 2004, 24(8): 1742-1747 (in Chinese) [28] Frey SD, Drijber R, Smith H, et al. Microbial biomass, functional capacity, and community structure after 12 years of soil warming. Soil Biology & Biochemistry, 2008, 40: 2904-2907 [29] Wang X-J (王学娟), Zhou Y-M (周玉梅), Jiang X-J (江肖洁), et al. Effects of warming on soil microbial community structure in Changbai Mountain Tundra. Acta Ecologica Sinica (生态学报), 2014, 34(20): 5706-5713 (in Chinese) [30] Wilson H, Johnson BR, Bohannan B, et al. Experimental warming decreases arbuscular mycorrhizal fungal colonization in prairie plants along a Mediterranean climate gradient. PeerJ, 2016, 4(6): e2083, doi: 10.7717/peerj.2083 [31] BjÖrk RG, BjÖrkman MP, Andersson MX, et al. Temporal variation in soil microbial communities in alpine tundra. Soil Biology & Biochemistry, 2008, 40: 266-268 [32] Wilkinson S, Anderson J, Scardelis S, et al. PLFA profiles of microbial communities in decomposing conifer litters subject to moisture stress. Soil Biology and Biochemistry, 2002, 34: 189-200 [33] HÖgberg MN, HÖgberg P, Myrold DD. Is microbial community composition in boreal forest soils determined by pH, C-to-N ratio, the trees, or all three? Oecologia, 2007, 150: 590-601 [34] Hatfield JL, Follett RF. Nitrogen in the Environment: Sources, Problems, and Management. Amsterdam, the Netherlands: Elsevier, 2008 [35] Jandl R, Sletten RS. Mineralization of forest soil carbon: Interactions with metals. Journal of Plant Nutrition and Soil Science, 1999, 162: 623-629 [36] Kiikkilä O, Kanerva S, Kitunen V, et al. Soil microbial activity in relation to dissolved organic matter properties under different tree species. Plant and Soil, 2014, 377: 169-177 [37] Prescott CE. Litter decomposition: What controls it and how can we alter it to sequester more carbon in forest soils? Biogeochemistry, 2010, 101: 133-149 [38] Brockett BFT, Prescott CE, Grayston SJ. Soil moisture is the major factor influencing microbial community structure and enzyme activities across seven biogeoclimatic zones in western Canada. Soil Biology and Biochemistry, 2012, 44: 9-20 |