Journal Article

Sap flow measurements with some thermodynamic methods, flow integration within trees and scaling up from sample trees to entire forest stands

Kucera, J, Cermak, J, Nadezhdina, N

2004

Overview

Sap flow measurement techniques and evaluation of data are reviewed. Particular attention is paid to the trunk segment heat balance (THB) and heat field deformation (HFD) methods based on 30 years experience. Further elaboration of sap flow data is discussed in terms of integrating flow for whole stems from individual measuring points, considering variation of radial patterns in sapwood and variation around stems. Scaling up of data from sets of sample trees to entire forest stands based on widely available biometric data (partially on remote sensing images) is described and evaluated with a discussion of the magnitude of errors, the routine procedure applicable in any forest stand and practical examples.[PUBLICATION ABSTRACT]

• Publisher: Springer,Springer Nature B.V
• Subject: accuracy / Biological and medical sciences / biometry / data analysis / equations / errors / Flow measurement / flow visualization / Forest management. Stand types and stand dynamics. Silvicultural treatments. Tending of stands. Natural regeneration / forest stands / forest trees / Forestry / Fundamental and applied biological sciences. Psychology / heat / Heat balance / heat field deformation / measurement / Measurement techniques / methodology / radial pattern / Remote sensing / sap flow / sapwood / Sensors / spatial data / Stand types and stand dynamics. Silvicultural treatments. Tending of stands. Natural regeneration / Stems / tree and stand measurements / tree trunk / trunk heat balance