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冰川冻土 ›› 2007, Vol. 29 ›› Issue (4): 584-588.

• 冰冻圈与全球变化 • 上一篇    下一篇

若尔盖高原草甸土与泥炭土氧化CH4研究

王长科1, 吕宪国2, 蔡祖聪3, 罗勇1   

  1. 1. 中国气象局, 气候研究开放实验室, 北京, 100081;
    2. 中国科学院, 东北地理与农业生态研究所, 吉林, 长春, 130012;
    3. 中国科学院, 南京土壤研究所, 江苏, 南京, 210008
  • 收稿日期:2007-01-03 修回日期:2007-03-10 出版日期:2007-08-25 发布日期:2012-04-26
  • 基金资助:
    国家科技支撑计划项目(2006BAD20B05);国家重点基础研究发展计划项目(2006CB403707);中国气象局气候变化专项(CCSF2007-36)资助

Methane Oxidation in the Meadow Soil and Peat Soil in Zoigê Plateau

WANG Chang-ke1, LU Xian-guo2, CAI Zu-cong3, LUO Yong1   

  1. 1. Laboratory of Climate Study, China Meteorological Administration, Beijing 100081, China;
    2. Northwest Institute ofGeography and Agricultural Ecology, Chinese Academy of Sciences, Changchun Jilin 130012, China;
    3. Institute of Soil Science, Chinese Academy of Sciences, Nanjing Jiangsu 210008, China
  • Received:2007-01-03 Revised:2007-03-10 Online:2007-08-25 Published:2012-04-26

摘要: 若尔盖高原草甸土氧化大气CH4的速率为-0.092~0.125 ng·g-1·h-1,氧化速率随着土壤深度的增加而减小,深度超过25cm的土层没有氧化大气CH4的潜力;而高原泥炭土CH4排放速率为0.236~1.088 ng·g-1·h-1,排放速率亚表层土(10~25 cm)最大.两种土壤均能氧化高浓度CH4,泥炭土氧化大气浓度CH4的速率是草甸土的15~22倍.两种土壤不同层次氧化高浓度CH4的潜力都没有显著差异.降水减少或人为排水导致的泥炭地水位下降,将加强若尔盖高原土壤氧化CH4从而减少CH4排放.

关键词: CH4氧化, 草甸土, 泥炭地, 若尔盖高原

Abstract: The meadow soil in the Zoigê Plateau could consume atmospheric CH4 at a rate of-0.092~0.125 ng·g-1·h-1,and the potential CH4 oxidation rates decreases with increasing soil depth.The peat soil CH4 releases to atmosphere at a rate of 0.236~1.088 ng·g-1·h-1.Both soils can oxidize high-concentration CH4(9000 μL·L-1),but the peat soil can oxidize high-concentration CH4 more quick than the meadow soil does.Different soil layers have almost the same potential of oxidizing high-concentration CH4.CH4 emission form the peat land decreases with the increase of soil CH4 oxidation as the water level dropping in the peat land.

Key words: methane oxidation, meadow soil, peat land, Zoigê Plateau

中图分类号: 

  • X21