The possible mechanism for the water transport in the tree trunks in early spring

International Jubilee Scientific and Practical Conference "Innovative directions of development of the forestry complex"

生态环境科学

Matveev, N.N.^1 ; Rychkov, A.A.^2 ; Kamalova, N.S.^1 ; Yu Evsikova, N.^1

Voronezh State University of Forestry and Technologies Named after G.F. Morozov, 8 Timiryazeva Street, Voronezh

394087, Russia^1

Russian State Pedagogical University Named after A.I. Herzen, 48 Embankment of the Moika River Street, St. Petersburg

191186, Russia^2

关键词: Forest restoration;    Integrated approach;    Measurements of;    Modern technologies;    Natural conditions;    Possible mechanisms;    Potential difference;    Water transport;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/226/1/012047/pdf
DOI  :  10.1088/1755-1315/226/1/012047

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Modern technologies in the field of forest restoration require the creation of an integrated approach for systematizations all the developed methods and theories. The main difficulty in the concept creating may be an insufficient number of formalized models of processes that ensure the vital cycle of woody plants. The paper suggests a physical model of transport of salt solutions in the xylem of tree trunks in early spring. The flow of mineral ions is carried out in the porous wood of the trunk during this period by the principle of a molecular vacuum pump in which the energy for the movement of the salt solution is consumed from the thermopolarization field of the xylem arising by the change in the ambient temperature. The results of measurements of the potential difference along the tree trunk of the families Betula pendula and Populus tremula were used for interpretation the model. Measurements of the potential difference along the tree trunk were made under natural conditions and the ambient temperature was measured. Analysis of the results showed that the thermopolarization phenomena in the xylem of the trunks can be the basis of the mechanism of sap movement in early spring. Therefore the hydraulic ratios known for ion pumps can be used for the formalized simulation of the process under investigation.