干旱区生态环境知识资源中心(Arid): 盐碱土土壤无机CO

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	盐碱土土壤无机CO_2通量与土壤盐碱属性的关系
其他题名	Soil inorganic CO_2 flux in relation to soil pH and electric conductivity in saline/alkaline soils
	王忠媛; 谢江波; 王玉刚; 李彦
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2013
卷号	32 期号:10 页码:2552-2558
中文摘要	土壤CO_2通量是陆地生态系统碳循环的第二大通量,其很小的变化就能严重改变大气CO_2浓度的平衡。本研究分析了土壤pH和EC对盐碱土土壤CO_2通量的重要组成土壤无机CO_2通量的作用。实验于2010年69月在中国科学院新疆阜康荒漠生态站进行。采用高压灭菌的方法,将9种盐碱土的土壤无机CO_2通量从土壤CO_2通量中分离。结果表明,在土壤类型一定时,土壤无机CO_2通量主要受温度控制;低温有利于CO_2吸收,高温有利于CO_2释放。土壤pH可作为指示盐碱土土壤无机CO_2通量作用大小的指标;在低温和高温阶段,土壤pH对土壤无机CO_2通量的作用效果不同。土壤盐分较大的变化,才能造成土壤无机CO_2通量的显著差异。本研究分析了盐碱土土壤无机CO_2通量的特征,为盐碱土无机CO_2通量过程机制的推导提供证据。开展不同盐碱土土壤无机CO_2通量研究将极大促进干旱区盐碱土碳循环的解读。
英文摘要	Soil CO_2 flux is the second largest flux of carbon cycle in terrestrial ecosystems, and its slight variation can result in a significant change in the balance of atmospheric CO_2 concentration. This paper analyzed the effects of soil pH and electric conductivity (EC) on the soil inorganic CO_2 flux, an important component of soil CO_2 flux, in saline/alkaline soils. The experiment was conducted at the Fukang Desert Ecological Station, Xinjiang of Northwest China from June to September, 2010. The inorganic CO_2 flux of nine saline/alkaline soils was differentiated from the soil CO_2 flux by the method of sterilization with high pressure steam chamber. The results showed that for certain saline/alkaline soil, the soil inorganic CO_2 flux was mainly controlled by temperature. Low temperature benefited the CO_2 absorption by the saline/alkaline soils, whereas high temperature benefited the CO_2 release. The soil pH could be used as a good indicator for the soil inorganic CO_2 flux. At low and high temperatures, the effects of the soil pH on the soil inorganic CO_2 flux differed. The soil salinity also had effects on the soil inorganic CO_2 flux, but the effects could be significant only when the soil salinity had a considerable change. This study highlighted the characteristics of soil inorganic CO_2 flux in saline/alkaline soils, which could provide evidence to educe the underlying inorganic mechanisms. The non-negligible role of soil inorganic CO_2 flux requires further investigation towards a better understanding of soil carbon cycle in saline/alkaline soils in arid lands.
中文关键词	土壤无机CO_2通量 ; 盐碱土 ; 温度 ; 土壤pH ; 土壤EC
英文关键词	soil inorganic CO_2 flux saline/alkaline soil temperature soil pH soil EC
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FISHERIES
WOS研究方向	Fisheries
CSCD记录号	CSCD:4953299
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230073
作者单位	中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	王忠媛,谢江波,王玉刚,等. 盐碱土土壤无机CO_2通量与土壤盐碱属性的关系[J]. 中国科学院新疆生态与地理研究所,2013,32(10):2552-2558.
APA	王忠媛,谢江波,王玉刚,&李彦.(2013).盐碱土土壤无机CO_2通量与土壤盐碱属性的关系.生态学杂志,32(10),2552-2558.
MLA	王忠媛,et al."盐碱土土壤无机CO_2通量与土壤盐碱属性的关系".生态学杂志 32.10(2013):2552-2558.