干旱区生态环境知识资源中心(Arid): 盐土和碱土土壤无机CO

Arid

	盐土和碱土土壤无机CO_2通量的分离
其他题名	Differentiating the soil inorganic CO_2 flux of saline and alkaline soils
	王忠媛; 王玉刚; 谢江波; 李彦
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2013
卷号	36 期号:4 页码:655-661
中文摘要	干旱区盐碱土无机CO_2通量是一个崭新、独特的科学现象,打破了土壤CO_2通量完全来自于有机源的假设;然而,盐碱土无机CO_2通量在土壤CO_2通量和全球碳循环中的重要性还缺乏分离和量化的依据,因而存在很大的不确定性。通过采用高压灭菌的方法,将盐土和碱土的土壤无机CO_2通量从土壤CO_2通量中分离。结果表明:高压灭菌方法并不改变土壤的理化性质,并通过土壤有机CO_2通量与温度的关系验证了分离方法的有效性,从而为盐碱土无机CO_2通量的分离、量化和评估提供了一个可靠有效的方法。盐碱土的土壤无机CO_2通量是土壤CO_2通量的重要组分,土壤无机CO_2通量的分离对精确解析干旱区盐碱土生态系统的碳循环是必要的;对盐碱土土壤无机CO_2通量的研究,将促进对干旱区盐碱土土壤CO_2通量和全球碳循环的理解。
英文摘要	The soil inorganic CO_2 flux in saline/alkaline soil of the arid land is a unique and brand-new phenomenon, which breaks the assumption that soil CO_2 fluxes are purely organic in origin. However, due to lack differentiation standard and quantitative data, the significance of soil inorganic CO_2 flux to soil CO_2 flux and global carbon cycle is still uncertainty. The experiment was carried out from August to October in 2009 at the Fukang Station of Desert Ecology. To determine the potential contribution of soil inorganic CO_2 flux to total soil CO_2 flux, the soil inorganic CO_2 flux was differentiated by sterilization treatment (121℃ , 24 h) with pressure steam chamber. The results showed that soil properties had little change before and after sterilization treatment. Having its differentiation effect validated by the relationship between soil organic CO_2 flux and temperature, it showed that the sterilization was a reliable and valid method to differentiate soil inorganic CO_2 flux. The effect of soil inorganic CO_2 flux was larger than that of soil organic CO_2 flux, which could dominate the saline/alkaline soil CO_2 flux both in direction and magnitude. As a significant component of soil CO_2 flux in saline/alkaline soil, the differentiation and quantification of soil inorganic CO_2 flux are necessary to advance understanding of carbon cycle in arid land. Therefore, the non-negligible role of soil inorganic CO_2 flux as potential contribution to the arid land ecosystem carbon cycle requires further investigation towards a better understanding of arid land soil CO_2 flux and global soil carbon cycle.
中文关键词	土壤CO_2通量 ; 土壤无机CO_2通量 ; 盐土 ; 碱土 ; 高压灭菌
英文关键词	soil CO_2 flux soil inorganic CO_2 flux saline soil alkaline soil pressure-steaming sterilization
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4938885
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/2XILL650/229535
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,王玉刚,谢江波,等. 盐土和碱土土壤无机CO_2通量的分离[J]. 中国科学院新疆生态与地理研究所,2013,36(4):655-661.
APA	王忠媛,王玉刚,谢江波,&李彦.(2013).盐土和碱土土壤无机CO_2通量的分离.干旱区地理,36(4),655-661.
MLA	王忠媛,et al."盐土和碱土土壤无机CO_2通量的分离".干旱区地理 36.4(2013):655-661.