气候变化领域集成服务门户(CCPortal): Variation in Populus euphratica foliar carbon isotope composition and osmotic solute for different groundwater depths in an arid region of China

CCPortal

DOI	10.1007/s10661-015-4890-y
	Variation in Populus euphratica foliar carbon isotope composition and osmotic solute for different groundwater depths in an arid region of China
	Si, Jianhua; Feng, Qi; Yu, Tengfei; Zhao, Chunyan; Li, Wei
发表日期	2015
ISSN	0167-6369
EISSN	1573-2959
卷号	187 期号:11
英文摘要	Water use efficiency (WUE) is an important trait associated with plant acclimation caused by water deficits, and delta C-13 is a good surrogate of WUE under conditions of water deficits. Water deficiency also enhances the accumulation of compatible solutes in the leaves. In this study, variations in foliar delta C-13 values and main osmotic solutes were investigated. Those included total soluble sugar (TSS), sucrose, free proline, glycine betaine (GB), and inorganic ionic (K+, Ca2+, and Cl-) content of Populus euphratica for different groundwater depths in a Ejina desert riparian forest, China. Results indicated that foliar delta C-13 values in the P. euphratica for different groundwater depths ranged from -29.14 +/- 0.06 to -25.84 +/- 0.04%. Foliar delta C-13 signatures became richer as groundwater levels declined. TSS, sucrose, free proline, GB, and K+ were accumulated in P. euphratica foliage with developing plant growth and increasing groundwater depth. Ca2+ and Cl- content increased under stronger P. euphratica transpiration rates for shallower groundwater depths (1-2.5 m) and decreased for deeper groundwater depths (greater than 3.0 m). Moreover, correlations between delta C-13, osmotic solutes, and groundwater depths showed that the primary osmotic solutes were TSS, sucrose, proline, GB, and K+. Correlations also showed that delta C-13 was not only a useful measure for P. euphratica-integrated WUE but also could be used as an indicator reflecting some physiological osmotic indexes.
关键词	Water use efficiency Stable carbon isotope Osmotic solutes Groundwater depth Populus euphratica
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111794
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Si, Jianhua,Feng, Qi,Yu, Tengfei,et al. Variation in Populus euphratica foliar carbon isotope composition and osmotic solute for different groundwater depths in an arid region of China[J]. 中国科学院西北生态环境资源研究院,2015,187(11).
APA	Si, Jianhua,Feng, Qi,Yu, Tengfei,Zhao, Chunyan,&Li, Wei.(2015).Variation in Populus euphratica foliar carbon isotope composition and osmotic solute for different groundwater depths in an arid region of China.ENVIRONMENTAL MONITORING AND ASSESSMENT,187(11).
MLA	Si, Jianhua,et al."Variation in Populus euphratica foliar carbon isotope composition and osmotic solute for different groundwater depths in an arid region of China".ENVIRONMENTAL MONITORING AND ASSESSMENT 187.11(2015).