Sap flow in tree trunks within Chaohe mountain area and its variation with meteorological factors

【Objective】 Water ascent in plant is driven by water evaporation from leaves, influenced by meteorological factors. Understanding its variation with these factors is important to unveil the mechanisms underlying plant transpiration. This paper is to investigate the correlation between sap flow and m...

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Bibliographic Details
Published inGuanʻgai paishui xuebao Vol. 43; no. 3; pp. 1 - 10
Main Authors WANG Xiang, HAN Shuying, ZHAI Jiaqi, ZHANG Jinping, WANG Qingming
Format Journal Article
LanguageChinese
Published Science Press 01.03.2024
Subjects
characteristics of sap flow
meteorological factors
scales
time lag
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Summary:【Objective】 Water ascent in plant is driven by water evaporation from leaves, influenced by meteorological factors. Understanding its variation with these factors is important to unveil the mechanisms underlying plant transpiration. This paper is to investigate the correlation between sap flow and meteorological factors in a plantation located in the Chaohe mountain area. 【Method】 The experimental site is at the Dadaigou Experimental Station in Fengning County. Sap flow from May to October in different tree species including Larix principis-rupprechtii, Pinus tabulaeformis and Hippophae rhamnoides, was measured using the Granier-type thermal dissipation probe. Meteorological data measured during the same period were used to analyze their impact on the sap flows. 【Result】 ① In sunny days, sap flow measured in all species increased in daytime and decreased in evening; it was larger in sunny days than in rainy days. Sap flow in Hippophae rhamnoides was faster and more sensitive to rainfall than other two species
ISSN:1672-3317
DOI:10.13522/j.cnki.ggps.2023283