干旱区生态环境知识资源中心(Arid): Direct Versus Indirect Tree Ring Reconstruction of Annual Discharge of Chemora River, Algeria

Arid

DOI	10.3390/f11090986
	Direct Versus Indirect Tree Ring Reconstruction of Annual Discharge of Chemora River, Algeria
	Meko, David M.; Touchan, Ramzi; Kherchouche, Dalila; Slimani, Said
通讯作者	Meko, DM
来源期刊	FORESTS
EISSN	1999-4907
出版年	2020
卷号	11 期号:9
英文摘要	Annual river discharge is a critical variable for water resources planning and management. Tree rings are widely used to reconstruct annual discharge, but errors can be large when tree growth fails to respond commensurately to hydrologically important seasonal components of climate. This paper contrasts direct and indirect reconstruction as statistical approaches to discharge reconstruction for the Chemora River, in semi-arid northeastern Algeria, and explores indirect reconstruction as a diagnostic tool in reconstruction error analysis. We define direct reconstruction as predictions from regression of annual discharge on tree ring data, and indirect reconstruction as predictions from a four-stage process: (1) regression of precipitation on tree rings, (2) application of the regression model to get reconstructed precipitation for grid cells over the basin, (3) routing of reconstructed precipitation through a climatological water balance (WB) model, and (4) summing model runoff over cells to get the reconstructed discharge at a gage location. For comparative purposes, the potential predictors in both modeling approaches are the same principal components of tree ring width chronologies from a network of drought-sensitive sites ofPinus halepensisandCedrus atlanticain northern Algeria. Results suggest that both modeling approaches can yield statistically significant reconstructions for the Chemora River. Greater accuracy and simplicity of the direct method are countered by conceptual physical advantages of the indirect method. The WB modeling inherent to the indirect method is useful as a diagnostic tool in error analysis of discharge reconstruction, points out the low and declining importance of snowmelt to the river discharge, and gives clues to the cause of severe underestimation of discharge in the outlier high-discharge year 1996. Results show that indirect reconstruction would benefit most in this basin from tree ring resolution of seasonal precipitation.
英文关键词	reconstruction river discharge streamflow tree rings water balance Chemora River Algeria Thornthwaite
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000580562600001
WOS关键词	CEDRUS-ATLANTICA-MANETTI ; STREAMFLOW RECONSTRUCTIONS ; MEDITERRANEAN REGION ; TIME-SERIES ; PRECIPITATION ; VARIABILITY ; BASIN
WOS类目	Forestry
WOS研究方向	Forestry
来源机构	University of Arizona
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326981
作者单位	[Meko, David M.; Touchan, Ramzi] Univ Arizona, Lab Tree Ring Res, Tucson, AZ 85721 USA; [Kherchouche, Dalila] Univ Batna 1 Hadj Lakhdar, Inst Vet & Agron Sci, Batna 05000, Algeria; [Slimani, Said] Univ Mouloud Mammeri, Fac Biol Sci & Agron, Tizi Ouzou 15000, Algeria
推荐引用方式 GB/T 7714	Meko, David M.,Touchan, Ramzi,Kherchouche, Dalila,et al. Direct Versus Indirect Tree Ring Reconstruction of Annual Discharge of Chemora River, Algeria[J]. University of Arizona,2020,11(9).
APA	Meko, David M.,Touchan, Ramzi,Kherchouche, Dalila,&Slimani, Said.(2020).Direct Versus Indirect Tree Ring Reconstruction of Annual Discharge of Chemora River, Algeria.FORESTS,11(9).
MLA	Meko, David M.,et al."Direct Versus Indirect Tree Ring Reconstruction of Annual Discharge of Chemora River, Algeria".FORESTS 11.9(2020).