IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Alternative TitleA Study of CO_2 Fluxes from the High-cold Swamp Meadows with Different Degradation on the Hinterland of Tibetan Plateau during Growing Season
王俊峰1; 王根绪2; 吴青柏1
Corresponding Author王根绪
Source Publication冰川冻土

用静态箱~便携式红外色谱法对青藏高原风火山地区3种不同退化程度高寒沼泽草甸CO_2排放通量进行了研究. 结果表明: 在整个生长期内3种不同退化程度沼泽草甸均表现为正排放, 排放高峰集中在7-8月份, 平均排放通量分别高达111.48 mg·m~(-2)·d~(-1)(未退化)、 77.28 mg·m~(-2)·d~(-1)(中度退化)和38.12 mg·m~(-2)·d~(-1)(严重退化). 不同退化程度沼泽草甸之间CO_2排放通量存在明显差异, 表现为未退化>中度退化>严重退化. 气温、 5 cm土壤温度和湿度与3种不同退化程度高寒沼泽草甸CO_2排放通量之间均呈显著正相关关系, 是控制CO_2排放的主要环境因子.

Other Abstract

Elevated concentrations of atmospheric greenhouse gases are considered as the major cause of global warming.Due to its high elevation and special geographical location,the Tibetan Plateau is very sensitive to the climate change.As one of the most important ecosystems on the plateau,high-cold swamp meadows have been playing an important role in carbon balance.A study was conducted on CO_2 fluxes from the swamp meadows of varied degenerate degrees with a closed chamber sampling and infrared spectrum analysis technique in the Fenghuoshan Mountain area on the Tibetan Plateau.The results showed that the three swamp meadow sites all had CO_2 emissions in the growing season,reaching climax between July and August: the maximum fluxes from the swamp meadows of un-degenerated,moderately-degenerated and severely-degenerated degrees were 111.48,77.28 and 38.12 mg·m~(-2)·d~(-1),respectively.The CO_2 emissions from the meadows with different degradation were different significantly each other.During the growing season,the more the swamp meadows degenerate,the lower the CO_2 fluxes emit.In addition,air temperature,soil temperature and soil moisture at 5 cm depth had significant positive correlations with the CO_2 effluxes from the meadows.They were the main factors to control the CO_2 emission.

Keyword二氧化碳 排放通量 沼泽化草甸 退化 青藏高原 风火山
Subject AreaS812
Indexed ByCSCD ; 北大中文核心
Funding Organization中国科学院“百人计划”项目(2004年) ; 国家自然科学基金项目(90511003)
Citation statistics
Cited Times:12[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
王俊峰,王根绪,吴青柏. 青藏高原腹地不同退化程度高寒沼泽草甸生长季节CO_2排放通量及其主要环境控制因子研究[J]. 冰川冻土,2008,20(3):408-414.
APA 王俊峰,王根绪,&吴青柏.(2008).青藏高原腹地不同退化程度高寒沼泽草甸生长季节CO_2排放通量及其主要环境控制因子研究.冰川冻土,20(3),408-414.
MLA 王俊峰,et al."青藏高原腹地不同退化程度高寒沼泽草甸生长季节CO_2排放通量及其主要环境控制因子研究".冰川冻土 20.3(2008):408-414.
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