[1] Anderson TR, Hawkins E, Jones PD. CO2, the greenhouse effect and global warming: From the pioneering work of Arrhenius and Callendar to today’s Earth System Models. Endeavour, 2016, 40: 178-187 [2] Chen H, Zhu Q, Peng C, et al. The impacts of climate change and human activities on biogeochemical cycles on the Qinghai-Tibetan Plateau. Global Change Biology, 2013, 19: 2940-2955 [3] Henry HAL. Soil freeze-thaw cycle experiments: Trends, methodological weaknesses and suggested improvements. Soil Biology and Biochemistry, 2007, 39: 977-986 [4] Baptist F, Yoccoz NG, Choler P. Direct and indirect control by snow cover over decomposition in alpine tundra along a snowmelt gradient. Plant and Soil, 2010, 328: 397-410 [5] Oechel WC, Vourlitis GL, Hastings SJ, et al. Acclimation of ecosystem CO2 exchange in the Alaskan Arctic in response to decadal climate warming. Nature, 2000, 406: 978-981 [6] Qin J-H (秦纪洪), Li J (李 菊), Wang Q (王 琴), et al. Effects of simulated freezing and thawing on mineralization of light-fraction organic matter of subalpine forest soil. Journal of Soil and Water Conservation (水土保持学报), 2014, 28(6): 240-244 (in Chinese) [7] Bleeker A, Hicks WK, Dentener F, et al. N deposition as a threat to the world’s protected areas under the convention on biological diversity. Environmental Pollution, 2011, 159: 2280-2288 [8] Liu X, Zhang Y, Han W, et al. Enhanced nitrogen depo-sition over China. Nature, 2013, 494: 459-462 [9] Knorr M, Frey SD, Curtis PS. Nitrogen additions and litter decomposition: A meta-analysis. Ecology, 2005, 86: 3252-3257 [10] Zhao C, Zhu L, Liang J, et al. Effects of experimental warming and nitrogen fertilization on soil microbial communities and processes of two subalpine coniferous species in Eastern Tibetan Plateau, China. Plant and Soil, 2014, 382: 189-201 [11] 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 [12] Papanikolaou N, Brotton AJ, Helliwell RC, et al. Nitrogen deposition, vegetation burning and climate warming act independently on microbial community structure and enzyme activity associated with decomposing litter in low-alpine heath. Global Change Biology, 2010, 16: 3120-3132 [13] Association of the Pulp and Paper Industry, USA. Solvent Extractives of Wood and Pulp (T 204 cm-97) [EB/OL]. (2007-03-12) [2015-04-03]. http://www.tappi.org/content/sarg/t204.pdf [14] Association of the Pulp and Paper Industry, USA. Water Solubility of Wood and Pulp (T 207 cm-08) [EB/OL]. (2008-04-20) [2015-08-02]. http://imisrise.tappi.org/TAPPI/Products/01/T/0104T207.aspx [15] Singleton VL, Orthofer R, Lamuela-Raventos RM. Ana-lysis of total phenols and other oxidation substrates and antioxidants by means of Folin-Ciocalteu reagent. Methods in Enzymology, 1999, 299: 152-178 [16] Folin O, Denis W. A colorimetric method for the determination of phenols (and phenol derivatives) in urine. Journal of Biological Chemistry, 1915, 22: 305-308 [17] Dubois M, Gilles KA, Hamilton JK, et al. Colorimetric method for determination of sugars and related substances. Analytical Chemistry, 1956, 28: 350-356 [18] Ehrman T. Determination of Acid-soluble Lignin in Biomass (NREL-LAP-004). Colorado: US National Renewable Energy Laboratory, 1996 [19] Sluiter A, Hames B, Ruiz R, et al. Determination of Structural Carbohydrates and Lignin in Biomass (NREL/TP-510-42618). Colorado: Laboratory Analytical Procedure (LAP) of US Department of Energy, 2008 [20] Sun H (孙 辉), Tang Y (唐 亚), Zhao Q-G (赵其国). Organic carbon decomposition patterns of hed-gerow prunings under contour hedgerow system. Acta Pedologica Sinica (土壤学报), 2002, 39(3): 361-367 (in Chinese) [21] Cotrufo MF, Wallenstein MD, Boot CM, et al. The Microbial Efficiency-Matrix Stabilization (MEMS) framework integrates plant litter decomposition with soil orga-nic matter stabilization: Do labile plant inputs form stable soil organic matter? Global Change Biology, 2013, 19: 988-995 [22] Giardina CP, Ryan MG. Evidence that decomposition rates of organic carbon in mineral soil do not vary with temperature. Nature, 2000, 404: 858-861 [23] Aerts R. The freezer defrosting: Global warming and litter decomposition rates in cold biomes. Journal of Ecology, 2006, 94: 713-724 [24] Ferreira V, Chauvet E, Canhoto C. Effects of experimental warming, litter species, and presence of macroinvertebrates on litter decomposition and associated decomposers in a temperate mountain stream. Canadian Journal of Fisheries and Aquatic Sciences, 2014, 72: 206-216 [25] Davidson EA, Janssens IA. Temperature sensitivity of soil carbon decomposition and feedbacks to climate change. Nature, 2006, 440: 165-173 |