DETECTION OF XYLEM CAVITATION IN FIELD-GROWN PINE TREES USING THE ACOUSTIC-EMISSION TECHNIQUE

被引：24

作者：

IKEDA, T

OHTSU, M

机构：

[1] Kyushu Research Center, Forestry and Forest Products Research Insitute, Kumamoto, 860, Kurokami

[2] Department of Civil and Environmental Engineering, Kumamoto University, Kumamoto, 860, Kurokami

来源：

ECOLOGICAL RESEARCH | 1992年 / 7卷 / 03期

关键词：

CAVITATION; EXCISED-SHOOT; FIELD-GROWN PINE TREE; NEEDLE WATER POTENTIAL; ULTRASONIC ACOUSTIC EMISSION;

D O I：

10.1007/BF02347106

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The relationship between the ultrasonic acoustic emission (AE) and the needle water potential in field-grown Japanese black pine, Pinus thunbergii, and excised-pine shoots was investigated in summer. The A.E technique was employed as a reliable indicator of cavitation events in the water columns of xylem tracheids even under field conditions. In excised shoots, AE events were detected when the needle water potential fell below about - 0.9 MPa. In the case of field-grown pine trees, however, relatively few AE events were detected when needle water potential was lower than - 0.9 MPa. This suggests that the occurrence of cavitation events in Japanese black pine growing under field conditions is comparatively rare, even in summer.

引用

页码：391 / 395

页数：5

共 13 条

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