[1] Lal R. Soil carbon sequestration impacts on global climate change and food security. Science, 2004, 304(5677): 1623-1627. [2] Sa R L, Li J X, Hou X Y. Research on soil organic carbon storage distribution in the grassland ecosystem. Scientia Agricultura Sinica, 2013, 46(17): 3604-3614. [3] Li Y Y, Dong S K, Wen L, et al . Soil carbon and nitrogen pools and their relationship to plant and soil dynamics of degraded and artificially restored grasslands of the Qinghai-Tibetan Plateau. Geoderma, 2014, 213: 178-184. [4] Kato T, Tang Y, Gu S, et al . Carbon dioxide exchange between the atmosphere and an alpine meadow ecosystem on the Qing-hai-Tibetan Plateau, China. Agricultural and Forest Meteorology, 2004, 124(1): 121-134. [5] Bond-Lamberty B, Thomson A. Temperature-associated increases in the global soil respiration record. Nature, 2010, 464: 579-582. [6] Yang Y, Hang G D, Li Y H, et al . Response of soil respiration to grazing intensity, water contents, and temperature of soil in different grasslands of Inner Mongolia. Acta Prataculturae Sinica, 2012, 21(6): 8-14. [7] Zhou H K, Zhao X Q, Wen J, et al . The characteristics of soil and vegetation of degenerated alpine steppe in the Yellow River Source Region. Acta Prataculturae Sinica, 2012, 21(5): 1-11. [8] Kotzé E, Sandhage-Hofmann A, Meinel J A, et al . Rangeland management impacts on the properties of clayey soils along grazing gradients in the semi-arid grassland biome of South Africa. Journal of Arid Environments, 2013, 97: 220-229. [9] He G X, Li K H, Song W, et al . The fluxes of carbon dioxide, methane and nitrous oxide in alpine grassland of the Tianshan Mountains, Xinjiang. Acta Ecologica Sinica, 2014, 34(3): 674-681. [10] Xu H H, Hou X Y, Na R S. Dynamics of soil respiration under different grazing systems in a Stipa breviflora desert steppe. Acta Prataculturae Sinica, 2011, 20(2): 219-226. [11] Hou X, Wang Z, Michael S P, et al . The response of grassland productivity, soil carbon content and soil respiration rates to different grazing regimes in a desert steppe in northern China. The Rangeland Journal, 2014, 36(6): 573-582. [12] Cui S, Zhu X, Wang S, et al . Effects of seasonal grazing on soil respiration in alpine meadow on the Tibetan plateau. Soil Use and Management, 2014, 30(3): 435-443. [13] Bao S D. Soil Agricultural Chemistry Analysis[M]. Beijing: China Agriculture Press, 2001. [14] Liu W, Wang J M, Wang Z P. Plant functional type effects on methane uptake by soils in typical grasslands of Inner Mongolia. Chinese Journal of Plant Ecology, 2011, 35(3): 275-283. [15] Li Z G, Hou F J. Analysis of soil respiration diurnal dynamics and factors influencing it in enclosed natural grasslands under different topographies in the Loess Plateau. Acta Prataculturae Sinica, 2010, 19(1): 42-49. [16] Chang Z Q, Liu X Q, Feng Q, et al . Non-growing season soil CO 2 efflux and its changes in an alpine meadow ecosystem of the Qilian Mountains, Northwest China. Journal of Arid Land, 2013, 5(4): 488-499. [17] Wen J, Zhou H K, Yao B Q, et al . Characteristics of soil respiration in different degraded alpine grassland in the source region of Three-River. Chinese Journal of Plant Ecology, 2014, 38(2): 209-218. [18] Fu Z H, Huyan J Q, Li F, et al . Impacts of different surface covers on soil respiration in urban areas. Acta Ecologica Sinica, 2013, 33(18): 5500-5508. [19] Ryan M G, Law B E. Interpreting, measuring, and modeling soil respiration. Biogeochemistry, 2005, 73: 3-27. [20] Ma T, Dong Y S, Qi Y C, et al . Effect of grazing on soil respiration in typical Leymus chinensis steppe in Inner Mongolia. Geographical Research, 2009, 28(4): 1040-1046. [21] Zhou P, Han G D, Wang C J, et al . Effects of stocking rates on carbon flux in the desert grassland ecological system of Inner Mongolia. Journal of Inner Mongolia Agricultural University, 2011, 32(4): 59-64. [22] Heitschmidt R K, Stuth J W. Grazing Management: an Ecological Perspective[M]. Portland, OR USA: Timber Press, 1991. [23] Kuzyakov Y, Gavrichkova O. Time lag between photosynthesis and carbon dioxide efflux from soil: a review of mechanisms and controls. Global Change Biology, 2010, 16(12): 3386-3406. [24] Liu T, Zhang Y X, Xu Z Z, et al . Effects of short-term warming and increasing precipitation on soil respiration of desert steppe of Inner Mongolia. Chinese Journal of Plant Ecology, 2012, 36(10): 1043-1053. [25] Wang R M, Dong K H, He N P, et al . Effect of enclosure on soil C mineralization and priming effect in Stipa grandis grassland of Inner Mongolia. Acta Ecologica Sinica, 2013, 33(12): 3622-3629. [26] Deng Y, Liu X N, Yan R R, et al . Soil respiration of Hulunber meadow steppe and response of its controlling factors to different grazing intensities. Acta Prataculturae Sinica, 2013, 22(2): 22-29. [27] Cui J, Holden N M. The relationship between soil microbial activity and microbial biomass, soil structure and grassland management. Soil and Tillage Research, 2015, 146: 32-38. [28] Qi W W, Niu H S, Wang S P, et al . Simulation of effects of warming on carbon budget in alpine meadow ecosystem on the Tibetan Plateau. Acta Ecologica Sinica, 2012, 32(6): 1713-1722. [29] Yang Q P, Xu M, Liu H S, et al . Impact factors and uncertainties of the temperature sensitivity of soil respiration. Acta Ecologica Sinica, 2011, 31(8): 2301-2311. [30] Atkin O K, Tjoelker M G. Thermal acclimation and the dynamic response of plant respiration to temperature. Trends in Plant Science, 2003, 8(7): 343-351. [31] Fu S, Cheng W, Susfalk R. Rhizosphere respiration varies with plant species and phenology: a greenhouse pot experiment. Plant and Soil, 2002, 239(1): 133-140. [32] Davidson E C, Belk E, Boone R D. Soil water content and temperature as independent or confounded factors controlling soil respiration in a temperate mixed hardwood forest. Global Change Biology, 1998, 4(2): 217-227. [33] Wang M, Liu X S, Li X J, et al . Soil respiration dynamics and its controlling factors of typical vegetation communities on meadow steppes in the western Songnen Plain. Chinese Journal of Applied Ecology, 2014, 25(1): 45-52. [34] Shen Z T, Shi B, Wang B J, et al . The temperature dependence of soil organic matter decomposition and CO 2 efflux: a review. Acta Ecologica Sinica, 2013, 33(10): 3011-3019. [35] Chen J, Cao J J, Wei Y L, et al . Effect of grazing exclusion on soil respiration during the dormant season in alpine meadow grassland ecosystems on the northern shore of Qinghai Lack, China. Acta Prataculturae Sinica, 2014, 23(6): 78-86. [36] Kirschbaum M U F. The temperature dependence of organic-matter decomposition-still a topic of debate. Soil Biology and Biochemistry, 2006, 38(9): 2510-2518. [37] Giardina C P, Ryan M G. Evidence that decomposition rates of organic carbon in mineral soil do not vary with temperature. Nature, 2000, 404: 858-861. [2] 萨茹拉, 李金祥, 侯向阳. 草地生态系统土壤有机碳储量及其分布特征. 中国农业科学, 2013, 46(17): 3604-3614. [6] 杨阳, 韩国栋, 李元恒, 等. 内蒙古不同草原类型土壤呼吸对放牧强度及水热因子的响应. 草业学报, 2012, 21(6): 8-14. [7] 周华坤, 赵新全, 温军, 等. 黄河源区高寒草原的植被退化与土壤退化特征. 草业学报, 2012, 21(5): 1-11. [9] 贺桂香, 李凯辉, 宋韦, 等. 新疆天山高寒草原不同放牧管理下的CO 2 ,CH 4 和N 2 O通量特征. 生态学报, 2014, 34(3): 674-681. [10] 徐海红, 侯向阳, 那日苏. 不同放牧制度下短花针茅荒漠草原土壤呼吸动态研究. 草业学报, 2011, 20(2): 219-226. [13] 鲍士旦. 土壤农化分析[M]. 北京: 中国农业出版社, 2001. [14] 刘伟, 王继明, 王智平.内蒙古典型草原植物功能型对土壤甲烷吸收的影响. 植物生态学报, 2011, 35(3): 275-283. [15] 李志刚, 侯扶江. 黄土高原不同地形封育草地的土壤呼吸日动态与影响因子分析. 草业学报, 2010, 19(1): 42-49. [17] 温军, 周华坤, 姚步青, 等. 三江源区不同退化程度高寒草原土壤呼吸特征. 植物生态学报, 2014, 38(2): 209-218. [18] 付芝红, 呼延佼奇, 李锋, 等. 城市不同地表覆盖类型对土壤呼吸的影响. 生态学报, 2013, 33(18): 5500-5508. [20] 马涛, 董云社, 齐玉春, 等. 放牧对内蒙古羊草群落土壤呼吸的影响. 地理研究, 2009, 28(4): 1040-1046. [21] 周培, 韩国栋, 王成杰, 等. 不同放牧强度对内蒙古荒漠草地生态系统含碳温室气体交换的影响. 内蒙古农业大学学报, 2011, 32(4): 59-64. [24] 刘涛, 张永贤, 许振柱, 等. 短期增温和增加降水对内蒙古荒漠草原土壤呼吸的影响. 植物生态学报, 2012, 36(10): 1043-1053. [25] 王若梦, 董宽虎, 何念鹏, 等. 围封对内蒙古大针茅草地土壤碳矿化及其激发效应的影响. 生态学报, 2013, 33(12): 3622-3629. [26] 邓钰, 柳小妮, 闫瑞瑞, 等. 呼伦贝尔草甸草原土壤呼吸及其影响因子对不同放牧强度的响应. 草业学报, 2013, 22(2): 22-29. [28] 亓伟伟, 牛海山, 汪诗平, 等. 增温对青藏高原高寒草甸生态系统固碳通量影响的模拟研究. 生态学报, 2012, 32(6): 1713-1722. [29] 杨庆朋, 徐明, 刘洪升, 等. 土壤呼吸温度敏感性的影响因素和不确定性. 生态学报, 2011, 31(8): 2301-2311. [33] 王铭, 刘兴士, 李秀军, 等. 松嫩平原西部草原典型植物群落土壤呼吸动态及影响因素. 应用生态学报, 2014, 25(1): 45-52. [34] 沈征涛, 施斌, 王宝军, 等. 土壤有机质转化及CO 2 释放的温度效应研究进展. 生态学报, 2013, 33(10): 3011-3019. [35] 陈骥, 曹军骥, 魏永林, 等. 青海湖北岸高寒草甸草原非生长季土壤呼吸对温度和湿度的响应. 草业学报, 2014, 23(6): 78-86. |