Application of thermal dissipation probe in the study of Bambusa chungii sap flow

Based on the validation of Granier's empirical formula for calculating tree stem sap flux density, a comparative study was conducted on the measurement of Bambusa chungi sap flow by using different lengths of thermal dissipation probe (TDP), aimed to approach the applicability of TDP in measuri...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 23; no. 4; p. 979
Main Authors Zhao, Ping, Mei, Ting-Ting, Ni, Guang-Yan, Yu, Meng-Hao, Zeng, Xiao-Ping
Format Journal Article
LanguageChinese
Published China 01.04.2012
Subjects
Bambusa - metabolism
Bambusa - physiology
Chemistry Techniques, Analytical - instrumentation
Plant Stems - metabolism
Plant Stems - physiology
Plant Transpiration - physiology
Water - metabolism
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Summary:Based on the validation of Granier's empirical formula for calculating tree stem sap flux density, a comparative study was conducted on the measurement of Bambusa chungi sap flow by using different lengths of thermal dissipation probe (TDP), aimed to approach the applicability of TDP in measuring the sap flow of B. chungii. The difference in the daily change of the sap flow between B. chungii and nearby growing Schima superb was also analyzed. Because of the thinner bamboo wall and the heterogeneous anatomy, the sap flux density of B. chungii measured by 10 mm long probe could be underestimated, but that measured by 8 and 5 mm long probes could be relatively accurate. The comparison of the sap flow between B. chungii and nearby growing S. superba revealed that both the mean sap flux density and its daily change pattern' s skewness of B. chungii were higher than those of S. superba, but the nighttime sap flow of B. chungii was less than that of S. superba, indicating that the water recharge of B. chungii durin
ISSN:1001-9332