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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Frequency variation of mechanical waves of the impulse tomograph based on geographic north

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Author(s):
Mendes, Flavio Henrique [1] ; da Silva Filho, Demostenes Ferreira [1]
Total Authors: 2
Affiliation:
[1] Univ Sao Paulo, Forestry Dept, ESALQ, Piracicaba, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: SCIENTIA FORESTALIS; v. 47, n. 122, p. 353-358, JUN 2019.
Web of Science Citations: 0
Abstract

Tensile wood and opposite wood are specialized tissues developed in angiosperms. The first occur on the upper side, while the second, the lower side. This paper analyzed the influence of the prevailing east/southeast winds on the formation of tension wood and opposite wood in tree trunks of angiosperms in a tropical city, using an impulse tomography array, in cross sections. The use of tomographic imaging has gained support for evaluating tree health as it is a non-destructive and comprehensive methodology. A total of 27 trees were analyzed, being one of each species, in a urban park at Piracicaba/SP/Brazil. The R-squared value of the linear regression of basic density and wave propagation speed from the trees was 0.3271, revealing that each tree is a specific case and the analysis must be done in an individualized mode. Once obtained the tomographic images, they were divided into quadrants: in 70% of cases there was a predominance of highest values for mechanical wave propagation speed in quadrants 2 and 3, revealing the proving influence of the predominant east and southeast wind. (AU)

FAPESP's process: 09/53931-6 - Urban forestry certification as an instrument of public policy
Grantee:Demóstenes Ferreira da Silva Filho
Support type: Research Grants - Research in Public Policies