Aber J, W McDowell, K Nadelhoffer, et al. 1998. Nitrogen saturation in temperate forest ecosystems e hypotheses revisited. Bioscience, 48: 921-934.
Al-Kaisi M M, M L Kruse, J E Sawyer. 2008. Effect of nitrogen fertilizer application on growing season soil carbon dioxide emission in a cornsoybean rotation. Journal of Environment Quality, 37: 325-332.
Berendse F, N van Breemen, H Rydin, et al. 2001. Raised atmospheric CO2 levels and increased N deposition cause shifts in plant species composition and production in Sphagnum bogs. Global Change Biology, 7: 591-598.
Boone R D, K J Nadelhoffer, J D Canary, J P Kaye. 1998. Roots exert a strong influence on the temperature sensitivity of soil respiration. Nature, 396: 570-572.
Bowden R, E Davidson, K Savage, et al. 2004. Chronic nitrogen additions reduce total soil respiration and microbial respiration in temperate forest soils at the Harvard Forest. Forest Ecology and Management, 196: 43-56.
Bragazza L, C Freeman, T Jones, et al. 2006. Atmospheric nitrogen deposition promotes carbon loss from peat bogs. Proceedings of the National Academy of Sciences USA, 103: 19386-19389.
Burton A J, K S Pregitzer, J N Crawford, et al. 2004. Simulated chronic NO3- addition reduces soil respiration in northern hardwood forests. Global Change Biology, 10: 1080-1091.
Chen H, Tian H. 2005. Does a general temperature-dependent Q10 model of soil respiration exist at biome and global scale? Journal of Integrative Plant Biology, 47, 1288-1302.
Coleman M D, A L Friend, C C Kern. 2004. Carbon allocation and nitrogen acquisition in a developing Populus deltoides plantation. Tree Physiology, 24: 1347-1357.
Currey P M, D Johnson, L J Sheppard, et al. 2010. Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland. Global Change Biology, 16: 2307-2321.
Davidson E A, I A Janssens, Luo Y. 2006. On the variability of respiration in terrestrial ecosystems: Moving beyond Q10. Global Change Biology, 12:154-164.
Ding W, Cai Y, Cai Z, et al. 2007. Soil respiration under maize crops: Effects of water, temperature, and nitrogen fertilization. Soil Science Society of America Journal, 71: 944-951.
Dong Y S, Zhang S, Qi Y C, et al. 2000. Fluxes of CO2, N2O and CH4 from a typical temperate grassland in Inner Mongolia and its daily variation. Chinese Science Bulletin, 45: 1590-1594.
Fang H J, Cheng S L, Yu G R, et al. 2012. Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition. Plant and Soil, 351: 177-190.
Galloway J N, A R Townsend, J W Erisman, et al. 2008. Transformation of the nitrogen cycle: Recent trends, questions, and potential solutions. Science, 320: 889-892.
Ghani A, M Dexter, K W Perrott. 2003. Hot-water extractable carbon in soils: A sensitive measurement for determining impacts of fertilization, grazing and cultivation. Soil Biology and Biochemistry, 35: 1231-1243.
Giardina C P, M G Ryan, D Binkley, J H Fownes. 2003. Primary production and carbon allocation in relation to nutrient supply in a tropical experimental forest. Global Change Biology, 9: 1438-1450.
Iovieno P, L Morra, A Leone, et al. 2009. Effect of organic and mineral fertilizers on soil respiration and enzyme activities of two Mediterranean horticultural soils. Biology and Fertility of Soils, 45: 555-561.
Jiang C M, Yu G R, Fang H J, et al. 2010. Short-term effect of increasing nitrogen deposition on CO2, CH4 and N2O fluxes in an alpine meadow on the Qinghai-Tibetan Plateau, China. Atmospheric Environment, 44: 2920-2926.
Joffre R, J M Ourcival, S Rambal, A Rocheteau. 2003. The key-role of topsoil moisture on CO2 efflux from a Mediterranean Quercus ilex forest. Annals of Forest Science, 60: 519-526.
Jones S K, R M Rees, D Kosmas, et al. 2006. Carbon sequestration in a temperate grassland: Management and climatic controls. Soil Use and Management, 22: 132-142.
Kang L, Han X, Zhang Z, Sun O J. 2007. Grassland ecosystems in China: review of current knowledge and research advancement. Philosophical Transactions of the Royal Society of London Series B-Biological Sciences, 362: 997-1008.
Liljeroth E, J A Van Veen, H J Miliier. 1990. Assimilate translocation to the rhizosphere of two wheat lines and subsequent utilization by rhizosphere microorganisms at two soil nitrogen concentrations. Soil Biology and Biochemistry, 22: 1015-1021.
Lloyd J, J A Taylor. 1994. On the temperature dependence of soil respiration. Functional Ecology, 8: 315-323.
Lü C Q, Tian H Q. 2007. Spatial and temporal patterns of nitrogen deposition in China: Synthesis of observational data. Journal of Geophysical Research, 112, D22S05. doi:10.1029/2006jd007990.
Lü F M, LüX T, Liu W, et al. 2011. Carbon and nitrogen storage in plant and soil as related to nitrogen and water amendment in a temperate steppe of northern China. Biology and Fertility of Soils, 47(2): 187-196.
Mansson K F, U Falkengren-Grerup. 2003. The effect of nitrogen deposition on nitrification, carbon and nitrogen mineralization and litter C: N ratios in oak (Quercus robur L.) forests. Forest Ecology and Management, 179(1-3): 455-467.
Micks P, J D Aber, R D Boone, E A Davidson. 2004. Short-term soil respiration and nitrogen immobilization response to nitrogen applications in control and nitrogen-enriched temperate forests. Forest Ecology and Management, 196(1): 57-70.
Min K, Kang H, D Lee. 2011. Effects of ammonium and nitrate additions on carbon mineralization in wetland soils. Soil Biology and Biochemistry, 43(12): 2461-2469.
Mo J M, S Brown, Xue J H, et al. 2006. Response of litter decomposition to simulated N deposition in disturbed, rehabilitated and mature forests in subtropical China. Plant and Soil, 282(1-2): 135-151.
Mo J M, Zhan W g, Zhu W X, et al. 2007. Response of soil respiration to simulated N deposition in a disturbed and a rehabilitated tropical forest in southern China. Plant and Soil, 296(1-2): 125-135.
Mo J M, Zhang W, Zhu W X, et al. 2008. Nitrogen addition reduces soil respiration in a mature tropical forest in southern China. Global Change Biology, 14(2): 403-412.
Neff J C, A R Townsend, G Gleixner, et al. 2002. Variable effects of nitrogen additions on the stability and turnover of soil carbon. Nature, 419: 915-917.
Nilson L O, K Wiklund. 1995. Indirect effects of N and S deposition on a Norway spruce ecosystem: An update of findings within the Storage projects. Water Air and Soil pollution, 85(3): 1613-1622.
Olsson P, S Linder, R Giesler, P Högberg. 2005. Fertilization of boreal forest reduces both autotrophic and heterotrophic soil respiration. Global Change Biology, 11(10): 1745-1763.
Peng Q, Dong Y S, Qi Y C, et al. 2011. Effects of nitrogen fertilization on soil respiration in temperate grassland in Inner Mongolia, China. Environment Earth Science, 62(6): 1163-1171.
Peng S S, Piao S L, Wang T, et al. 2009. Temperature sensitivity of soil respiration in different ecosystems in China. Soil Biology and Biochemistry, 41: 1008-1014.
Phillips R P, T J Fahey. 2007. Fertilization effects on fine root biomass, rhizosphere microbes and respiratory fluxes in hardwood forest soils. New Phytologist, 176(3): 655-664.
Raich J W, W H Schlesinger. 1992. The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate. Tellus B, 44(2): 81-99.
Ren J Z, Hu Z Z, Zhao J, et al. 2008. A grassland classification system and its application in China. Rangeland Journal, 30(2): 119-209.
Soil Survey Staff. 2006. Keys to Soil Taxonomy. USDA Natural Resources Conservation Service, Washington D C. Song M, Xu X, Hu Q, et al. 2007. Interactions of plant species mediated plant competition for inorganic nitrogen with soil microorganisms in an alpine meadow. Plant and Soil, 297(1-2): 127-137.
Tang X L, Liu S G, Zhou G Y, et al. 2006. Soil-atmospheric exchange of CO2, CH4, and N2O in three subtropical forest ecosystems in southern China. Global Change Biology, 12(3): 546-560.
Thirukkumaran C M, D Parkinson. 2000. Microbial respiration, biomass, metabolic quotient and litter decomposition in a lodgepole pine forest amended with nitrogen and phosphorous fertilizers. Soil Biology and Biochemistry, 32(1): 59-66.
Tjoelker M G, J Oleksyn, P B Reich. 2001. Modelling respiration of vegetation: Evidence for a general temperature-dependent Q10. Global Change Biology, 7(2): 223-230.
Wang C H, Wan S Q, Xing X R, et al. 2006. Temperature and soil moisture interactively affected soil net N mineralization in temperate grassland in Northern China. Soil Biology and Biochemistry, 38(5): 1101-1110.
Wang W J, J A Baldock, R C Dalal, P W Moody. 2004. Decomposition dynamics of plant materials in relation to nitrogen availability and biochemistry determined by NMR and wet-chemical analysis. Soil Biology and Biochemistry, 36(12): 2045-2058.
Wang Y S, Wang Y H. 2003. Quick measurement of CH4, CO2 and N2O emissions from a short-plant ecosystem. Advances in Atmospheric Sciences, 20(5): 842-844.
Xia J Y, Niu S L, Wan S Q. 2009. Response of ecosystem carbon exchange to warming and nitrogen addition during two hydrologically contrasting growing seasons in a temperate steppe. Global Change Biology, 15(6): 1544-1556.
Zheng J J, Fang H J, Cheng S L, et al. 2012. Effects of N addition on soil organic carbon components in an alpine meadow on the eastern Qinghai-Tibetan Plateau. Acta Ecologica Sinica, 32: 5363-5372 (in Chinese).
Zheng Z M, Yu G R, Fu Y L, et al. 2009. Temperature sensitivity of soil respiration is affected by prevailing climatic conditions and soil organic carbon content: A trans-China based case study. Soil Biology and Biochemistry, 41(7): 1531-1540.