干旱区生态环境知识资源中心(Arid): Estimation of water use of Pinus tabulaeformis Carr. in Loess Plateau of Northwest China

Arid

DOI	10.2478/johh-2019-0013
	Estimation of water use of Pinus tabulaeformis Carr. in Loess Plateau of Northwest China
	Jian, Shengqi; Wu, Zening; Hu, Caihong
通讯作者	Hu, Caihong
来源期刊	JOURNAL OF HYDROLOGY AND HYDROMECHANICS
EISSN	1338-4333
出版年	2019
卷号	67 期号:3 页码:271-279
英文摘要	Tree transpiration plays a determining role in the water balance of forest stands and in seepage water yields from forested catchments, especially in arid and semiarid regions where climatic conditions are dry with severe water shortage, forestry development is limited by water availability. To clarify the response of water use to climatic conditions, sap flow was monitored by heat pulse velocity method from May to September, 2014, in a 40-year-old Pinus tabulaeformis Carr. plantation forest stands in the semiarid Loess Plateau region of Northwest China. We extrapolated the measurements of water use by individual plants to determine the area-averaged transpiration of the woodlands. The method used for the extrapolation assumes that the transpiration of a tree was proportional to its sapwood area. Stand transpiration was mainly controlled by photosynthetically active radiation and vapor pressure deficit, whereas soil moisture had more influence on monthly change in stand transpiration. The mean sap flow rates for individual P. tabulaeformis trees ranged from 9 to 54 L d(-1). During the study period, the mean daily stand transpiration was 1.9 mm day(-1) (maximum 2.9 and minimum 0.8 mm day(-1)) and total stand transpiration from May to September was 294.1 mm, representing 76% of the incoming precipitation over this period. Similar results were found when comparing transpiration estimated with sap flow measurements to the Penman-Monteith method (relative error: 16%), indicating that the scaling procedure can be used to provide reliable estimates of stand transpiration. These results suggested that P. tabulaeformis is highly effective at utilizing scarce water resources in semiarid environments.
英文关键词	Sap flow Transpiration Scaling up Pinus tabulaeformis Loess Plateau
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000473006300008
WOS关键词	SAP-FLOW ; SPATIAL VARIABILITY ; SOIL ; TRANSPIRATION ; RESTORATION ; INFILTRATION ; PLANTATION ; DETACHMENT ; GRASSLAND ; PATTERNS
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217186
作者单位	Zhengzhou Univ, Coll Water Conservancy & Environm, Sci Rd 100, Zhengzhou, Henan, Peoples R China
推荐引用方式 GB/T 7714	Jian, Shengqi,Wu, Zening,Hu, Caihong. Estimation of water use of Pinus tabulaeformis Carr. in Loess Plateau of Northwest China[J],2019,67(3):271-279.
APA	Jian, Shengqi,Wu, Zening,&Hu, Caihong.(2019).Estimation of water use of Pinus tabulaeformis Carr. in Loess Plateau of Northwest China.JOURNAL OF HYDROLOGY AND HYDROMECHANICS,67(3),271-279.
MLA	Jian, Shengqi,et al."Estimation of water use of Pinus tabulaeformis Carr. in Loess Plateau of Northwest China".JOURNAL OF HYDROLOGY AND HYDROMECHANICS 67.3(2019):271-279.