气候变化领域集成服务门户(CCPortal): Seasonal Trade-Off between Water- and Nitrogen-Use Efficiency of Constructive Plants in Desert Riparian Forest in Hyperarid Region of China

CCPortal

DOI	10.4018/978-1-60960-064-8.ch024
	Seasonal Trade-Off between Water- and Nitrogen-Use Efficiency of Constructive Plants in Desert Riparian Forest in Hyperarid Region of China
	Cao, Shengkui; Feng, Qi; Si, Jianhua; Su, Yonghong; Chang, Zongqiang; Xi, Haiyang
发表日期	2011
英文摘要	Foliar delta C-13 values are often used to denote the long-term water use efficiency (WUE) of plants whereas long-term nitrogen use efficiency (NUE) are usually estimated by the ratio of C to N in the leaves. Seasonal variations of delta C-13 values, foliar nitrogen concentration and C/N ratios of Populus euphratica and Tamarix ramosissima grown under,five different microhabitats of kijina desert riparian oasis of northwestern arid regions in China were studied. The results indicated that T ramosissima had higher VC value compared with that ofP euphratica. The N concentration and C/N ratios of two species were not significantly different, The seasonal pattern of three indexes in two species was different. The 4'13C values and N concentration decreased during the plant :s growth period. However the change of C/N ratios was increased Among microhabitats, there were higher PC values and N concentration as well as lower C/N ratios in the Dune and Gobi habitats. Foliar delta C-13 values significantly and positively correlated with N concentration in P euphratica and T ramosissinia, whereas a significantly negative correlation between VC values and CfN ratios was Jbund for P euphratica. This relation in T ramosissima was weak, but there was a significant quadratic curve relationship between delta C-13 values and C/N ratios, which revealed that there was a trade-off between VIE and NUE.* P euphratica and in natural condition, P euphratica could not improve WUE and NUE simultaneously. T ramosissima could simultaneously enhance WUE and NUE. The above characters of WUE and NUE in two plants reflected the different adaptations of desert species to environmental condition.
学科领域	Mathematical & Computational Biology
语种	英语
WOS研究方向	Mathematical & Computational Biology
来源期刊	INTERDISCIPLINARY RESEARCH AND APPLICATIONS IN BIOINFORMATICS, COMPUTATIONAL BIOLOGY, AND ENVIRONMENTAL SCIENCES
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/111641
作者单位	Qinghai Normal Univ, Biol & Geog Sci Inst, Xining, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Cao, Shengkui,Feng, Qi,Si, Jianhua,et al. Seasonal Trade-Off between Water- and Nitrogen-Use Efficiency of Constructive Plants in Desert Riparian Forest in Hyperarid Region of China[J]. 中国科学院西北生态环境资源研究院,2011.
APA	Cao, Shengkui,Feng, Qi,Si, Jianhua,Su, Yonghong,Chang, Zongqiang,&Xi, Haiyang.(2011).Seasonal Trade-Off between Water- and Nitrogen-Use Efficiency of Constructive Plants in Desert Riparian Forest in Hyperarid Region of China.INTERDISCIPLINARY RESEARCH AND APPLICATIONS IN BIOINFORMATICS, COMPUTATIONAL BIOLOGY, AND ENVIRONMENTAL SCIENCES.
MLA	Cao, Shengkui,et al."Seasonal Trade-Off between Water- and Nitrogen-Use Efficiency of Constructive Plants in Desert Riparian Forest in Hyperarid Region of China".INTERDISCIPLINARY RESEARCH AND APPLICATIONS IN BIOINFORMATICS, COMPUTATIONAL BIOLOGY, AND ENVIRONMENTAL SCIENCES (2011).