Sapflow characteristics and climatic responses in three forest species in the semiarid Loess Plateau region of China

ISWC OpenIR > 水保所知识产出(1956---)

	Sapflow characteristics and climatic responses in three forest species in the semiarid Loess Plateau region of China
	Du Sheng; Wang Yi-Long; Kume Tomonori; Du, S
	2011
发表期刊	AGRICULTURAL AND FOREST METEOROLOGY
卷号	151 期号:1 页码:1-10
摘要	In the semiarid Loess Plateau region of China ecosystems are frequently affected by water shortages Late spring and early summer are periods when forest communities tend to suffer from soil drought To clarify the water-use strategies of the main species in this area the xylem sap flow of trees from three species in the field was monitored for three successive periods in summer using Granier-type thermal dissipation probes Vapor pressure deficit (VPD) solar radiation (R(s)) and soil moisture had varying influences on sap flux density (F(d)) in the species Normalized F(d) values could be fitted to VPD using an exponential saturation function but the fit was better with a derived variable of transpiration (VT) an integrated index calculated from VPD and Rs From differences in model coefficients the species were roughly divided into two types with contrasting drought sensitivity The exotic Robinia pseudoacacia was defined as drought-sensitive type It showed higher sapflow increases in response to rainfall suggesting a high water demand and high Influence of soil water conditions on transpiration This species showed relatively late stomatal response to increasing VPD The wide-peak pattern of diurnal sapflow course also suggests relatively low stomatal regulation in this species The drought-insensitive type consisted of the naturally dominant Quercus liaotungensis and an indigenous concomitant species Armeniaca sibirica in the forest The sap flow of these species was not very sensitive to changes in soil water conditions The results suggest that typical indigenous species can manage the water consumption conservatively under both drought and wet conditions Variations in water use strategies within indigenous species are also detected (C) 2010 Elsevier B V All rights reserved
关键词	Drought Sensitivity Granier Type Sensor Loess Plateau Sap Flow Thermal Dissipation Probe (Tdp) Tree Transpiration Water Use
收录类别	SCI
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/4721
专题	水保所知识产出(1956---)
通讯作者	Du, S
推荐引用方式 GB/T 7714	Du Sheng,Wang Yi-Long,Kume Tomonori,et al. Sapflow characteristics and climatic responses in three forest species in the semiarid Loess Plateau region of China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2011,151(1):1-10.
APA	Du Sheng,Wang Yi-Long,Kume Tomonori,&Du, S.(2011).Sapflow characteristics and climatic responses in three forest species in the semiarid Loess Plateau region of China.AGRICULTURAL AND FOREST METEOROLOGY,151(1),1-10.
MLA	Du Sheng,et al."Sapflow characteristics and climatic responses in three forest species in the semiarid Loess Plateau region of China".AGRICULTURAL AND FOREST METEOROLOGY 151.1(2011):1-10.

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