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小叶章湿地土壤微生物生物量碳和可溶性有机碳的分布特征
Authors
刘景双
杨继松
Publication date
1 January 2009
Publisher
Abstract
利用野外原位观测方法,研究了三江平原不同水分条件下2类小叶章湿地土壤微生物量碳和可溶性有机碳的分布特征,并探讨了其影响因素。结果表明,5—9月小叶章湿草甸湿地表层土壤(0~20cm)微生物生物量碳和可溶性有机碳平均值分别为769.2和312.3mg·kg-1,小叶章沼泽化草甸湿地土壤的相应值为2447.3和404.4mg·kg-1,其分别占总有机碳的2.50%和1.03%以及3.53%和0.59%。2类有机碳活性组分均具有明显的季节变化特征,且剖面含量随深度的增加呈递减趋势。有机质的输入、腐殖质含量和水分条件是影响小叶章湿地土壤微生物量碳和可溶性有机碳分布的主要因素
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Northeast Institute of Geography and Agroecology, Chinese Academy Of Sciences
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Last time updated on 21/04/2018