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자료유형
학술대회자료
저자정보
Hirose, Shigeki (Faculty of Agriculture, Kyushu University) Humagai, Tomo&prime (Faculty of Agriculture, Kyushu University) omi (Faculty of Agriculture, Kyushu University) Kumi, Atsushi (Faculty of Engineering, Kyushu-kyoritsu University) Takeuchi, Shin&prime (Faculty of Agriculture, Kyushu University) ichi (Faculty of Agriculture, Kyushu University) Otsuki, Kyoichi Ogawa, Shigeru
저널정보
한국수자원학회 한국수자원학회 학술발표회 한국수자원학회 2001년도 학술발표회 논문집(I)
발행연도
2001.1
수록면
52 - 59 (8page)

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Methods to measure and estimate transpiration of a forest composed of evergreen broad-leaved trees (Pasania edulis Makino) are studied. Heat pulse velocity has been measured along with soil moisture and micrometeorological factors at the Fukuoka Experimental Forest, the Research Institute of Kyushu University Forests in Fukuoka, Japan (33$^{\circ}$38'N, 130$^{\circ}$31'E, alt. 75m). Tree cutting measurement was conducted to convert the heat pulse velocity into sap flow and transpiration. A big leaf model to calculate transpiration and Interception loss is examined and the estimated values are compared with the measured values obtained from the heat pulse measurement. The results show that 1) Pasania edulis Makino posessing radial pore structure had relatively high water content and high heat pulse velocity even within the central part of the stem near the pith, 2) the heat pulse velocity was well correspond to the water uptake in the tree cutting measurement, 3) the estimation of sap flow based on the heat pulse velocity is accurate, and 4) the big leaf model using the parameters obtained from measurement of a portable photosynthesis system in one day in summer gives reasonable estimation of transpiration independent of seasons and weather.

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