若尔盖高原草甸土与泥炭土氧化CH4研究

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

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. 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. 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/Abstract

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:

王长科, 吕宪国, 蔡祖聪, 罗勇. 若尔盖高原草甸土与泥炭土氧化CH₄研究[J]. 冰川冻土, 2007, 29(4): 584-588.

WANG Chang-ke, LU Xian-guo, CAI Zu-cong, LUO Yong. Methane Oxidation in the Meadow Soil and Peat Soil in Zoigê Plateau[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2007, 29(4): 584-588.

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若尔盖高原草甸土与泥炭土氧化CH₄研究

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

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