气候变化领域集成服务门户(CCPortal): 塔里木盆地荒漠植物与表土碳同位素组成研究

CCPortal

	塔里木盆地荒漠植物与表土碳同位素组成研究
其他题名	Stable Carbon Isotope Compositions of Desert Plant and Surface Soil in the Tarim Basin
	马剑英; 陈发虎; 夏敦胜; 张慧文
发表日期	2007
ISSN	1000-0240
卷号	29 期号:1 页码:144-148
中文摘要	表土有机质碳同位素组成(delta~(13)C_(org))反映了来自于地表各种植物delta~(13)C_(org)的一个混合信息. 要从沉积物delta~(13)C_(org)中提取可靠的植被信息, 需要系统研究现代表土有机质delta~(13)C_(org)与地表植被delta~(13)C_(org)的差异. 初步研究了塔里木盆地主要现代植被及土壤碳同位素组成, 对比不同地区土壤和地表植被delta~(13)C_(org)的差异. 结果表明: 塔里木盆地柽柳属种群中植物与表土碳同位素组成之间存在显著相关关系, 说明在干旱地区土壤中微生物和水生生物等的干扰因素可以忽略, 其现代土壤的同位素组成只与地表相应的主要植被类型有关. 塔里木盆地柽柳属种群中表土有机质delta~(13)C_(org)值比地表植被delta~(13)C_(org)值平均偏正1.71左右, 不同于其它地区表土和地表植被delta~(13)C_(org)差异(2.2, 1, 0.5)的结果, 反映不同地区表土和地表植被有机质delta~(13)C_(org)值差异不同. 在利用沉积物delta~(13)C_(org)值提取古生态植被信息时, 应考虑到不同地区土壤有机质与地表植被delta~(13)C_(org)值的不同差异会影响植被中C_3、 C_4植物组成情况.
英文摘要	The stable carbon isotope compositions in surface soil organic matter (delta~(13)C_(org)) are medley information mainly from the standing terrestrial plants. In order to obtain the valuable vegetation information from delta~(13)C_(org) in terrestrial sediment, it is necessary to investigate the relationship between delta~(13)C_(org) value in modern surface soil organic matter and standing vegetation. In this paper a primary survey on the delta~(13)C_(org) composition in modern surface soil organic matter and standing vegetation in the Tarim Basin is presented, and compared the delta~(13)C_(org) discrepancy between modern surface soil organic matter and standing vegetation among different regions. The results showed that the delta~(13)C_(org) values of plant in Tamarix L. populations are positively correlated with that of surface soil in the Tarim Basin, indicating that the interfering factors of microorganism and hydrophyte could be ignored in the arid regions. The delta~(13)C_(org) values of modern surface soil organic are greater than that of standing vegetation, and the discrepancy of mean delta~(13)C_(org) values between them is about 1.71 in the Tarim Basin. The discrepancies of delta~(13)C_(org) values between surface soil organic matter and standing vegetation are different from region to region (2. 2, 1, 0.5). It should be considered that the discrepancies of delta~(13)C_(org) values between surface soil organic matter and standing vegetation among different regions could influence the C_3/C_4 vegetation compositions , when the paleovegetation information from delta~(13)C_(org) in terrestrial sediment is obtained.
关键词	碳同位素组成植物表土塔里木盆地
英文关键词	stable carbon isotope composition;plant;surface soil;Tarim Basin
语种	中文
WOS研究方向	Plant Sciences
WOS类目	PLANT SCIENCES
CSCD记录号	CSCD:2811182
来源期刊	冰川冻土
来源机构	中国科学院寒区旱区环境与工程研究所 ; 兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1811
推荐引用方式 GB/T 7714	马剑英,陈发虎,夏敦胜,等. 塔里木盆地荒漠植物与表土碳同位素组成研究[J]. 中国科学院寒区旱区环境与工程研究所, 兰州大学, 中国科学院青藏高原研究所,2007,29(1):144-148.
APA	马剑英,陈发虎,夏敦胜,&张慧文.(2007).塔里木盆地荒漠植物与表土碳同位素组成研究.冰川冻土,29(1),144-148.
MLA	马剑英,et al."塔里木盆地荒漠植物与表土碳同位素组成研究".冰川冻土 29.1(2007):144-148.