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    Abstract:

    [Objective]To explore the effects of snow removal during freezing-thawing period on soil organic carbon components and carbon pool stability in Bayanbulak alpine wetland. [Methods]A field experiment was conducted in September 2022, with two treatments: snow removal and natural snowfall. The samples were collected during the initial freezing period (November), freezing period (March), and thawing period (July) of the freezing-thawing period, and the soil water content (SWC), electrical conductivity (EC), pH value, soil organic carbon (SOC), very unstable organic carbon (F1), unstable organic carbon (F2), stable organic carbon (F3), and inert organic carbon (F4) were determined. [Results]There were significant differences in the organic carbon content of F1 and F2 components after snow removal in the initial freezing period (P<0.05), compared with the natural snowfall, the organic carbon content of the two components decreased by 8.72% and 12.26%, respectively. There were significant differences in the organic carbon content of F3 components between different treatments in the freezing period (P<0.05), and the organic carbon content of F3 components decreased by 25.57% after snow removal. There were significant differences in the organic carbon content of F1, F2 and F3 in the thawing period (P<0.05), among which F1 and F3 decreased by 22.10% and 25.57%, respectively, and F2 increased by 34.92%, while there were no significant differences in other components. After snow removal, compared with the natural snowfall treatment, the carbon pool activity increased by 5.99%, 9.71% and 20.39% in the three periods, respectively.[Conclusion]The freeze-thaw cycle and snow removal had no significant effect on the organic carbon content and carbon pool stability, but the effect of snow removal on soil was greater than the freeze-thaw change. Snow removal led to the decrease of soil organic carbon content and the increase of soil organic carbon pool stability, which affected the original stable relationship between soil organic carbon components. With the freeze-thaw process, the soil organic carbon content showed a trend of first decrease and then increase, while the soil carbon pool stability showed a trend of first increase and then decrease.

    Reference
    [1] Keddy P A. Wetland ecology: principles and conservation[M]. Cambridge: Cambridge University Press, 2010.
    [2] Rasmussen C, Southard R J, Horwath W R. Mineral control of organic carbon mineralization in a range of temperate conifer forest soils [J]. Global Change Biology, 2006, 12(5):834-847.
    [3] M. W P,R. W E,J. P Z, et al. Soil carbon pools and world life zones[J]. Nature,1982,298(5870). doi:10.1038/298156a0.
    [4] 王平, 盛连喜, 燕红, 等. 植物功能性状与湿地生态系统土壤碳汇功能[J]. 生态学报, 2010, 30(24): 6990-7000.
    [5] 张荣涛, 付晓宇, 王康, 等. 三江平原小叶章湿地碳排放对雪被变化的短期响应[J]. 应用生态学报, 2020, 31(4): 262-270.
    [6] 柴春荣,倪红伟,刘赢男等.模拟雪被变化下三江平原湿地土壤理化性质的动态响应[J].中国农学通报,2021,37(05):31-37.
    [7] Grogan P , Michelsen A , Ambus P ,et al.Freeze-thaw regime effects on carbon and nitrogen dynamics in sub-arctic heath tundra mesocosms[J].Soil Biology Biochemistry, 2004, 36(4):641-654.DOI:10.1016/j.soilbio.2003.12.007.
    [8] Kreyling J, Beierkuhnlein C, Pritsch K, et al. Recurrent soil freeze-thaw cycles enhance grassland productivity[J].New Phytologist,2008,177(4):938-945
    [9] 杨开军. 川西亚高山云杉林冬季土壤呼吸对雪被去除的短期响应[D].四川农业大学,2018.
    [10] Groffman P M , Hardy J P , Fashu-Kanu S ,et al.Snow depth, soil freezing and nitrogen cycling in a northern hardwood forest landscape[J].Biogeochemistry, 2011, 102(1-3):223-238.DOI:10.1007/s10533-010-9436-3.
    [11] Decai G, Edith B, Yue Y, et al. A global meta-analysis on freeze-thaw effects on soil carbon and phosphorus cycling[J]. Soil Biology and Biochemistry, 2021(prepublish).
    [12] 买迪努尔·阿不来孜,陈末,杨再磊等.巴音布鲁克高寒湿地土壤真菌群落对不同程度退化的响应[J].农业环境科学学报,2022,41(08):1778-1787.
    [13] 陈末,买迪努尔·阿不来孜,蒋靖佰伦等.冻融期巴音布鲁克高寒湿地土壤真菌群落变化[J].新疆农业大学学报,2020,43(01):72-78.
    [14] 鲁如坤.土壤农业化学分析方法[M]. 北京: 中国农业科技出版社, 2000. [Lu R K. Chemical Analysis Methods of Soil Agriculture [M]. Beijing, China: China Agricultural Science and Technology Press, 2000.]
    [15] Chan, K.Y., Bowman, A., Oates, A., 2001. Oxidizible organic carbon fractions and soil quality changes in an oxic paleustalf under different pasture leys. Soil Sci. 166, 61–67.
    [16] Walkley A, Black I A. An examination of the degtjareff method for determining soil organic matter anda proposed modification of the chromic acid titration method[J]. Soil Science, 1934, 37(3): 29-38.
    [17] Yu Pujia, Li Yixuan, Liu Shiwei, et al. The quantity and stability of soil organic carbon following vegetation degradation in a salt-affected region of Northeastern China[J]. Catena,2022,211.
    [18] Liu X., Chen D., Yang T., et al. Changes in soil labile and recalcitrant carbon pools after land-use change in a semi-arid agro-pastoral ecotone in Central Asia. Ecol. Ind. 2020. 110, 105925.
    [19] 刘琳,杨春华,李昕.季节性雪被对高寒草甸土壤微生物量碳、氮动态的影响[J].安徽农业科学,2011,39(21):12884-12888+12967.DOI:10.13989/j.cnki.0517-6611.2011.21.022.
    [20] 刘帅,于贵瑞,浅沼顺等.蒙古高原中部草地土壤冻融过程及土壤含水量分布[J].土壤学报,2009,46(01):46-51.
    [21] 周旺明,秦胜金,刘景双等.沼泽湿地土壤氮矿化对温度变化及冻融的响应[J].农业环境科学学报,2011,30(04):806-811.
    [22] 娄云. 吉林前郭冻融期盐碱水田土壤碳变化及储量研究[D].吉林大学,2014.
    [23] 张仲胜,李敏,宋晓林等.气候变化对土壤有机碳库分子结构特征与稳定性影响研究进展[J].土壤学报,2018,55(02):273-282.
    [24] 郭冬楠. 冻融作用下森林沼泽湿地土壤有机碳组分及微生物活性特征研究[D].哈尔滨师范大学,2017.
    [25] 倪祥银,杨万勤,徐李亚等.雪被斑块对高山森林凋落叶腐殖化过程中胡敏酸和富里酸累积的影响[J].土壤学报,2014,51(05):1138-1152
    [26] 娄云,汤洁,梁爽等. 冻融区土壤碳排放及土壤有机碳变化[C]//Wuhan University,Zhejiang University,Nankai University,Xiamen University,Hunan University.Proceedings of Conference on Environmental Pollution and Public Health(CEPPH 2012).Scientific Research Publishing,2012:129-132.
    [27] 王娇月. 冻融作用对大兴安岭多年冻土区泥炭地土壤有机碳的影响研究[D].中国科学院研究生院(东北地理与农业生态研究所),2014.
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History
  • Received:October 19,2023
  • Revised:February 23,2024
  • Adopted:February 26,2024