[1] IPCC. Summary for policymakers// Stocker TF, Qin D, Plattner GK, eds. Climate Change 2013: The Physical Science Basis. Contribution of Working Groups Ⅰ to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridge University Press, 2013 [2] Galloway JN, Townsend AR, Erisman JW, et al. Transformation of the nitrogen cycle: Recent trends, questions, and potential solutions. Science, 2008, 320: 889-892 [3] Liu JX, Zhou GY, Zhang DQ, et al. Carbon dynamics in subtropical forest soil: Effects of atmospheric carbon dioxide enrichment and nitrogen addition. Journal of Soils and Sediments, 2010, 10: 730-738 [4] Kou T-J (寇太记), Xu X-F (徐晓峰), Zhu J-G (朱建国), et al. Contribution of wheat rhizosphere respiration to soil respiration under elevated atmospheric CO2 and nitrogen application. Chinese Journal of Applied Ecology (应用生态学报), 2011, 22(10): 2533-2538 (in Chinese) [5] Du Q-R (杜启然), Lei J-P (雷静品), Liu J-F (刘建锋), et al. Eco-physiological response of Quercus variabilis seedlings to increased atmospheric CO2 and N supply. Chinese Journal of Applied Ecology (应用生态学报), 2014, 25(1): 24-30 (in Chinese) [6] Zhao L (赵 亮), Zhou G-Y (周国逸), Zhang D-Q (张德强), et al. Effects of elevated CO2 concentration and nitrogen deposition on the biomass accumulation and allocation in south subtropical main native tree species and their mixed communities. Chinese Journal of Applied Ecology (应用生态学报), 2011, 22(8): 1949-1954 (in Chinese) [7] Chen XM, Liu JX, Deng Q, et al. Effects of elevated CO2 and nitrogen addition on soil organic carbon fractions in subtropical forest. Plant and Soil, 2012, 357: 25-34 [8] Long F-L (龙凤玲), Li Y-Y (李义勇), Fang X (方熊), et al. Effects of elevated CO2 concentration and nitrogen addition on soil carbon stability in southern subtropical experimental forest ecosystems. Chinese Journal of Plant Ecology (植物生态学报), 2014, 38(10): 1053-1063 (in Chinese) [9] Zhang NY, Guo R, Song P, et al. Effects of warming and nitrogen deposition on the coupling mechanism between soil nitrogen and phosphorus in Songnen meadow steppe, northeastern China. Soil Biology and Biochemistry, 2013, 65: 96-104 [10] Feng XJ, Simpson AJ, Schlesinger WH, et al. Altered microbial community structure and organic matter composition under elevated CO2 and N fertilization in the duke forest. Global Change Biology, 2010, 16: 2104-2116 [11] Liu JX, Fang X, Deng Q. CO2 enrichment and N addition increase nutrient loss from decomposing leaf litter in subtropical model forest ecosystems. Scientific Reports, 2015, 5: 7952 [12] Zhang J-Z (张继舟), Ni H-W (倪红伟), Wang J-B (王建波), et al. Effects of simulated nitrogen deposition and elevated CO2 concentration on soil organic carbon and nitrogen of Deyeuxia angustifolia community on the Sanjiang Plain. Earth and Environment (地球与环境), 2013, 41(3): 216-225 (in Chinese) [13] Guo J, Zhang MQ, Zhang L, et al. Responses of dissolved organic carbon and dissolved nitrogen in surface water and soil to CO2 enrichment in paddy field. Agriculture, Ecosystems and Environment, 2011, 140: 273-279 [14] Ding S-N (丁少男), Xue S (薛 萐), Liu G-B (刘国彬). Effects of fertilization on soil enzyme activities and water-soluble organic carbon and nitrogen content in farmland on hilly Loess Plateau. Journal of Agro-Environment Science (农业环境科学学报), 2015, 34(11): 2146-2154 (in Chinese) [15] Wang XG, Li CS, Luo Y, et al. The impact of nitrogen amendment and crop growth on dissolved organic carbon in soil solution. Journal of Mountain Science, 2016, 13: 95-103 [16] Deng L, Liu GB, Shangguan ZP. Land-use conversion and changing soil carbon stocks in China’s ‘Grain-for-Green’ program: A synthesis. Global Change Biology, 2014, 20: 3544-3556 [17] Han XW, Tsunekawa A, Tsubo M, et al. Responses of plant-soil properties to increasing N deposition and implications for large-scale eco-restoration in the semiarid grassland of the northern Loess Plateau, China. Ecological Engineering, 2013, 60: 1-9 [18] Jones DL, Willett VB. Experimental evaluation of methods to quantify dissolved organic nitrogen (DON) and dissolved organic carbon (DOC) in soil. Soil Biology and Biochemistry, 2006, 38: 991-999 [19] Ni J-Z (倪进治), Xu J-M (徐建民), Xie Z-M (谢正苗). Advances in soil water-soluble organic carbon research. Ecology and Environment (生态环境), 2013, 12(1): 71-75 (in Chinese) [20] Zhao GY, Liu JS, Wang Y, et al. Effects of elevated CO2 concentration and nitrogen supply on biomass and active carbon of freshwater marsh after two growing seasons in Sanjiang Plain, Northeast China. Journal of Environmental Sciences, 2009, 21: 1393-1399 [21] Li Y-F (李永夫), Jiang P-K (姜培坤), Liu J (刘娟), et al. Effects of fertilization on water-soluble orga-nic C, N, and emission of greenhouse gases in the soil of Phyllostachys edulis stands. Scientia Silvae Sinicae (林业科学), 2010, 46(12): 165-170 (in Chinese) [22] Wei C-L (魏春兰), Ma H-L (马红亮), Gao R (高 人), et al. Effects of nitrogen deposition on soluble organic carbon: A simulation study in subtropical forest soils. Journal of Subtropical Resources and Environment (亚热带资源与环境学报), 2013, 8(4): 16-24 (in Chinese) [23] Fang HJ, Cheng SL, Lin E, et al. Elevated atmospheric carbon dioxide concentration stimulates soil microbial activity and impacts water-extractable organic carbon in an agricultural soil. Biogeochemistry, 2015, 122: 253-267 [24] Terzano R, Cesco S, Mimmo TJ. Dynamics, thermodynamics and kinetics of exudates: Crucial issues in understanding rhizosphere process. Plant and Soil, 2015, 386: 399-406 [25] Weng BS, Xie XY, Yang JJ, et al. Research on the nitrogen cycle in rhizosphere of Kandelia obovata under ammonium and nitrate addition. Marine Pollution Bulletin, 2013, 76: 227-240 [26] Liang G-P (梁国鹏), Houssou AA, Wu H-J (吴会军), et al. Soil nitrogen content and enzyme activities in rhizosphere and non-rhizosphere of summer maize under different nitrogen application rates. Chinese Journal of Applied Ecology (应用生态学报), 2016, 27(6): 1917-1924 (in Chinese) [27] Dijkstra FA, Blumenthal D, Morgan JA, et al. Contrasting effects of elevated CO2 and warming on nitrogen cycling in a semiarid grassland. New Phytologist, 2010, 187: 426-437 [28] Lyu N (吕 宁), Yin F-H (尹飞虎), Chen Y (陈 云), et al. Effects of elevated atmospheric CO2 and nitrogen application on cotton biomass, nitrogen utilization and soil urease activity. Chinese Journal of Applied Eco-logy (应用生态学报), 2015, 26(11): 3337-3344 (in Chinese) [29] Liu ZP, Shao MA, Wang YQ. Spatial patterns of soil total nitrogen and soil total phosphorus across the entire Loess Plateau region of China. Geoderma, 2013, 197-198: 67-78 [30] Wei XR, Shao MA, Fu XL, et al. The effects of land use on soil N mineralization during the growing season on the northern Loess Plateau of China. Geoderma, 2011, 160: 590-598 [31] Zou Y-L (邹亚丽), Niu D-C (牛得草), Yang Y (杨益), et al. The Effects of nitrogen addition on soil nitrogen mineralization in the semi-arid typical grassland of Loess Plateau. Acta Agrestia Sinica (草地学报), 2014, 22(3): 461-468 (in Chinese) [32] Yang A, Liu NN, Tian QY, et al. Rhizosphere bacterial communities of dominant steppe plants shifts in response to a gradient of simulated nitrogen deposition. Frontiers in Microbiology, 2015, 6: 789 [33] Wang F-C (王方超), Zou L-Q (邹丽群), Tang J (唐静), et al. Influence of nitrogen deposition on soil nutrient supply and organic carbon mineralization in Cuninghamia lanceolata and Liquidambar formosana plantations. Acta Ecologica Sinica (生态学报), 2016, 36(11): 3226-3234 (in Chinese) [34] Luo Y-L (罗由林), Li Q-Q (李启权), Wang C-Q (王昌全), et al. Spatial variability of soil C/N ratio and its influence factors at a county scale in hilly area of Mid-Sichuan Basin, Southwest China. Chinese Journal of Applied Ecology (应用生态学报), 2015, 26(1):177-185 (in Chinese) [35] Wang J-L (王建林), Zhong Z-M (钟志明), Wang Z-H (王忠红), et al. Soil C/N distribution characteristics of alpine steppe ecosystem in Qinhai-Tibetan Plateau. Acta Ecologica Sinica (生态学报), 2014, 34(22): 6678-6691 (in Chinese) |