不同生长时期丝栗栲林下土壤有机碳含量及矿化特征
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科技部林业公益性行为科研专项项目"江西大岗山森林生态系统健康维护与经营技术研究"(200804022E);"十一五"国家科技支撑计划项目(2006BAD03A0702);国家自然科学资助项目(30590381);江西大岗山国家级森林生态站项目


Content and Mineralization Characteristics of Soil Organic Carbon Under Castanopsis Fargesii Forests in Different Growth Periods
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    摘要:

    [目的] 分析土壤活性碳含量变化以及土壤有机碳的矿化特征,为今后深入了解掌握丝栗栲林下土壤有机碳的分解转化过程及其固碳潜力提供理论依据。[方法] 基于野外取样调查以及室内分析得出的有机碳数据,利用双指数模型法,在Origin 8.6软件支持下拟合出活性碳含量以及有机碳矿化过程及强度的时空变化特征。[结果] 土壤有机碳含量和活性碳含量均呈现明显的表层富集现象以及4月较低,8月最高,之后逐月降低的时间变化特点。土壤有机碳矿化强度虽然表现出与土壤有机碳和活性碳含量相同的垂直剖面特征和时间变化趋势,但其时间变化特征与土壤活性碳含量变化更为一致,只有0-20 cm表层土壤表现出显著性变化。[结论] 土壤有机碳矿化强度与微生物、温度和活性碳含量均达到极显著相关水平,但其时间变化特征与土壤活性碳含量变化更为一致,二者的关系更密切。

    Abstract:

    [Objective] To analyze mineralization features and content of soil organic carbon in order to provide theoretical basis for future research on decomposition process and carbon sequestration capacity of soil under Castanopsis fargesii forests.[Methods] We obtained soil organic carbon data based on field investigation and laboratory analysis. The Origin 8.6 software was employed in the study. A double exponential model was used to investigate the spatial and temporal variation in activated carbon content and organic carbon mineralization intensity.[Results] Both of the soil organic carbon and activated carbon showed obvious surface enrichment, and this surface enrichment increased from the relative low in April to the highest in August, and then decreased gradually. The characteristics of vertical section and temporal variation in soil organic carbon mineralization intensity were similar to that in soil organic carbon and active carbon, and significant changes only occurred on topsoil at 0-20 cm.[Conclusion] Soil organic carbon mineralization intensity is significantly influenced by microbe, temperature and carbon content, and this influence is more significant in soil carbon content.

    参考文献
    [1] 周国模,姜培坤,徐秋芳.竹林生态系统中碳的固定与转化[M].北京:科学出版社,2010.
    [2] 冯朝阳,吕世海,高吉喜,等.华北山地不同植被类型土壤呼吸特征研究[J].北京林业大学学报,2008,30(2):20-26.
    [3] 耿玉清,余新晓,岳永杰,等.北京山地针叶林与阔叶林土壤活性有机碳库的研究[J].北京林业大学学报,2009,31(5):19-24.
    [4] 解宪丽,孙波,周慧珍,等.不同植被下中国土壤有机碳的储量与影响因子[J].土壤学报,2004,41(5):687-699.
    [5] 孙维侠,史学正,于东升,等.我国东北地区土壤有机碳密度和储量的估算研究[J].土壤学报,2004,41(2):298-300.
    [6] 王海燕,雷相东,张会儒,等.近天然落叶松云冷杉林土壤有机碳研究[J].北京林业大学学报,2009,31(3):11-16.
    [7] 王清奎,汪思龙,冯宗炜.杉木纯林与常绿阔叶林土壤活性有机碳库的比较[J].北京林业大学学报,2006,28(5):1-6.
    [8] 徐秋芳,姜培坤,沈泉.灌木林与阔叶林土壤有机碳库的比较研究[J].北京林业大学学报,2005,27(2):18-22.
    [9] 张伟,王克林,陈洪松,等.典型喀斯特峰丛洼地土壤有机碳含量空间预测研究[J].土壤学报,2012,49(3):601-606.
    [10] Jones C A. Estimation of an active fraction of soil nitrogen[J].Communications in Soil Science and Plant Analysis, 1984,15(1):23-32.
    [11] Giardina C P, Ryan M G. Evidence that decomposition rates of organic carbon in mineral soil do not vary with temperature[J].Nature, 2000,404(6780):858-860.
    [12] Fang C, Moncrieff J B. The dependence of soil CO2 efflux on temperature[J]. Soil Biology and Biochemistry, 2001,33(2):155-165.
    [13] Hopkins D W, Sparrow A D, Elberling B, et al. Carbon, nitrogen and temperature controls on microbial activity in soils from an Antarctic dry valley[J]. Soil Biology & Biochemistry, 2006,38(10):3130-3140.
    [14] Yang Lixia, Pan Jianjun, Yuan Shaofeng. Predicting dynamics of soil organic carbon mineralization with a double exponential model in different forest belts of China[J]. Journal of Forestry Research, 2006,17(1):39-43.
    [15] Pang Huan, Dai Wei, Wang Bing. Organic carbon content and mineralization characteristics of soil in a subtropical Pinus massoniana forest[J]. Journal of Chemical and Pharmaceutical Research, 2013,5(12):1363-1369.
    [16] Kourtev P S, Ehrenfeld J G, Haggblom M. Exotic plant species alter the microbial community structure and function in the soil[J]. Ecology, 2002,83(11):3152-3166.
    [17] Boyle M, Paul E A. Carbon and nitrogen mineralization kinetics in soil previously amended with sewagesludge[J]. Soil Science Society of America Journal, 1989,53(1):99-103.
    [18] 陆昕,孙龙,黄海清.森林土壤活性有机碳影响因素[J].森林工程, 2013,29(1):9-14.
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巩晟萱,王丹,戴伟,安晓娟,刘浩宇.不同生长时期丝栗栲林下土壤有机碳含量及矿化特征[J].水土保持通报,2015,35(5):59-63

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  • 收稿日期:2014-12-09
  • 最后修改日期:2014-12-18
  • 在线发布日期: 2016-04-05