欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2009, Vol. 28 ›› Issue (08): 1544-1549.

• 研究报告 • 上一篇    下一篇

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

杨继松1,2;刘景双2   

  1. 1沈阳大学污染环境的生态修复与资源化技术实验室;2中国科学院东北地理与农业生态研究所
  • 出版日期:2009-08-10 发布日期:2009-08-10

Distribution characteristics of microbial biomass carbon and dissolved organic carbon in Deyeuxia angustifolia marsh soils.

YANG Ji song 1;LIU Jing shuang 2   

  1. 1Key Laboratory of Eco-remediation of Contaminated Environment and Resources Reuse, Shenyang University;2Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Science
  • Online:2009-08-10 Published:2009-08-10

摘要: 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(0~20 cm)微生物生物量碳和可溶性有机碳平均值分别为769.2和312.3 mg·kg -1 ,小叶章沼泽化草甸湿地土壤的相应值为2447.3和404.4 mg·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。

关键词: 酸性硫酸盐土, 硫形态, 转化

Abstract: An in situ field investigation was conducted to study the distribution characteristics and related affecting factors of microbial biomass carbon (MBC) and dissolved organic carbon (DOC) in two types of  Deyeuxia angustifolia marsh soils in Sanjiang Plain. In D. angustifolia  wet meadow and  D. angustifolia  marsh meadow, the soil MBC and DOC contents in May-September were averagely 769.2 and 312.3 mg·kg-1, and 2447.3 and 404.4 mg·kg -1 , and the proportions of soil MBC and DOC to soil total organic carbon were 2.50% and 1.03%, and 3.53% and 0.59%, respectively. Both the soil MBC and the soil DOC had the characteristics of obvious seasonal change, and their contents decreased with soil depth. Organic matter input, humus content, and water condition were the main factors affecting the distribution of soil MBC and DOC in  D. angustifolia  marsh soils.

Key words: Acid sulfate soil, Sulfur forms, Transformation