气候变化领域集成服务门户(CCPortal): Sap flow of Populus euphratica in a desert riparian forest in an extreme arid region during the growing season

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DOI	10.1111/j.1672-9072.2006.00388.x
	Sap flow of Populus euphratica in a desert riparian forest in an extreme arid region during the growing season
	Si, Jian-Hua; Feng, Qi; Zhang, Xiao-You; Chang, Zong-Qiang; Su, Yong-Hong; Xi, Hai-Yang
发表日期	2007
ISSN	1672-9072
卷号	49 期号:4
英文摘要	In the present study, the heat pulse technique was applied to investigate the stem sap flow of Populus euphratica in a desert riparian forest in an extreme arid region from April to October 2003 and from May to October 2004. The experimental sites were in Qidaoqiao (101 degrees 10' E, 41 degrees 59' N) and Bayantaolai farm (101 degrees 14' E, 42 degrees 01' N) in Ejina county, in the low reaches of the Heihe River, China. The results indicated that the diurnal change in the velocity of sap flow showed minor fluctuations. At night, the rising of sap flow could be observed in the main tree species because of root pressure. During the growing season, the maximum average velocity was observed in July, followed by August, and the same velocity was observed in September and May; the minimum velocity was observed in October. The transpiration from June to August during the growing season accounted for approximately 70% of the annual total transpiration. The sap flow velocity of P. euphratica trees of different ages could be arranged in the order: 15 yr > 25 yr > 50 yr. Sap flow velocity was closely related to changes in micrometeorological factors, with average sap flow velocity showing a significant linear correlation with net radiation, air temperature and relative humidity.
关键词	desert riparian forest extreme arid region heat-pulse technique Populus euphratica sap flow velocity
学科领域	Biochemistry & Molecular Biology; Plant Sciences
语种	英语
WOS研究方向	Biochemistry & Molecular Biology ; Plant Sciences
来源期刊	JOURNAL OF INTEGRATIVE PLANT BIOLOGY
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/111506
推荐引用方式 GB/T 7714	Si, Jian-Hua,Feng, Qi,Zhang, Xiao-You,et al. Sap flow of Populus euphratica in a desert riparian forest in an extreme arid region during the growing season[J]. 中国科学院西北生态环境资源研究院,2007,49(4).
APA	Si, Jian-Hua,Feng, Qi,Zhang, Xiao-You,Chang, Zong-Qiang,Su, Yong-Hong,&Xi, Hai-Yang.(2007).Sap flow of Populus euphratica in a desert riparian forest in an extreme arid region during the growing season.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,49(4).
MLA	Si, Jian-Hua,et al."Sap flow of Populus euphratica in a desert riparian forest in an extreme arid region during the growing season".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 49.4(2007).