干旱区生态环境知识资源中心(Arid): Sap Flow of Populus euphratica in a Desert Riparian Forest in an Extreme Arid Region During the Growing Season

Arid

DOI	10.1111/j.1744-7909.2007.00388.x
	Sap Flow of Populus euphratica in a Desert Riparian Forest in an Extreme Arid Region During the Growing Season
	Si Jianhua; Fang Qi; Zhang Xiaoyou; Chang Zongqiang; Su Yonghong; Xi Haiyang
来源期刊	Journal of Integrative Plant Biology
ISSN	1672-9072
出版年	2007
卷号	49 期号:4 页码:425-436
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°10' E, 41°59' N) and Bayantaolai farm (101°14' E, 42°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.
英文关键词	desert riparian forest extreme arid region heat-pulse technique Populus euphratica sap flow velocity
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:2719427
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334936
作者单位	Si Jianhua, Cold and Arid Region Environmental and Engineering Research Institute, the Chinese Academy of Sciences; Alashan Desert Eco-hydrology Experimental Research Station, Lanzhou, Gansu 730000, China.; Fang Qi, Cold and Arid Region Environmental and Engineering Research Institute, the Chinese Academy of Sciences; Alashan Desert Eco-hydrology Experimental Research Station, Lanzhou, Gansu 730000, China.; Zhang Xiaoyou, Cold and Arid Region Environmental and Engineering Research Institute, the Chinese Academy of Sciences; Alashan Desert Eco-hydrology Experimental Research Station, Lanzhou, Gansu 730000, China.; Chang Zongqiang, Cold and Arid Region Environmental and Engineering Research Institute, the Chinese Academy of Sciences; Alashan Desert Eco-hydrology Experimental Research Station, Lanzhou, Gansu 730000, China.; Su Yonghong, Cold and Arid Region Environmental and Engineering Research Institute, the Chinese Academy of Sciences; Alashan Desert Eco-hydrology Experimental Research Station, Lanzhou, G...
推荐引用方式 GB/T 7714	Si Jianhua,Fang Qi,Zhang Xiaoyou,et al. Sap Flow of Populus euphratica in a Desert Riparian Forest in an Extreme Arid Region During the Growing Season[J],2007,49(4):425-436.
APA	Si Jianhua,Fang Qi,Zhang Xiaoyou,Chang Zongqiang,Su Yonghong,&Xi Haiyang.(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),425-436.
MLA	Si Jianhua,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):425-436.