87 



The environmental hazards of importing raw logs 



into Mexico 



John D. Lattin 

 Department of Entomologfy 

 Oregon State University 

 Corvallis. Oregon 97331-2907 

 U.S.A. 



Armando Equihua-Martinez-'- 



Centro de Entomologia y Acarologia 



Colegio de Postgraduados 



Montecillo, Edo . de Mexico 56230 



MEXICO. 



World trade increases every year. Part of this trade 

 activity includes a variety of wood products. While 

 manufactured wood products have been traded for many years, 

 the import and export of large quantities of green logs is a 

 relatively recent activity. 



Four thousand million hectares of the world are covered by 

 forests, 2050 million hectares in the temperate regions, 

 1200 million hectares in the tropical regions and 300 

 million hectares in the arid regions. Approximately 1000 

 million additional hectares, while classified as forests, 

 are mainly composed of shrubs and other woody vegetation 

 (Unasylva, 1985) . 



1/ Current address: Department of Entomology, Oregon State 

 University, Corvallis, OR 97331-2907, U.S.A. 



