【摘 要】
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Estimation of the transpiration rate for a tree is generally based on sap flow measurements within the hydro-active stem xylem. In this study, radial variation
【机 构】
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InstituteofDesertificationStudies,SchoolofSoilandWaterConservation,ResearchInstituteofForestry,Gansu
【基金项目】
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Acknowledgements This work was financially supported by the National Natural Science Foundation of China (31070628). We would like to thank ZhengGang GUO, Feng WANG, Feng DING and YongHua LI for their