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Esta encuesta es acerca del eucalipto, de los beneficios que
genera y de los problemas que genera.
Esta encuesta es acerca del eucalipto, de los beneficios que
genera y de los problemas que genera.
Hay más de 700 especies. Aunque la mayoría de las especies de eucalipto son nativas de Australia, un pequeño número de especies son nativas de Nueva Guinea (Papúa-Nueva Guinea e Indonesia). Incluso la distribución natural del eucalipto arcoíris llega hasta Filipinas (además de estar en algunas islas de Indonesia y en Papúa-Nueva Guinea).
El eucalipto blanco es la especie distribuida por Galicia y por el litoral cantábrico. En cambio, el eucalipto rojo se distribuye principalmente por el suroeste peninsular. Ambos fueron introducidos en España a mediados del s. XIX.
Los principales problemas para la biodiversidad que generan las plantaciones de eucalipto son, entre otros:
- Elevadas necesidades de agua.
- Impiden el crecimiento de árboles o hierbas al emitir determinadas sustancias químicas que inhiben dicho crecimiento: Este es el fenómeno conocido como alosteria.
- Facilitan la propagación de incendios forestales debido a que sus hojas son inflamables. Hay que añadir que sobreviven a los incendios que, además, les ayudan a colonizar rápidamente el espacio al haber eliminado otras especies de árboles.
- El aceite que contienen sus hojas es un repelente de insectos, lo que es un problema para la biodiversidad.
El eucalipto presenta muchos beneficios puesto que:
- Tiene muchos usos medicinales: Contra la fiebre, el catarro, la bronquitis, etc.
- Es una gran fuente de madera: La madera procedente del eucalipto representa un gran porcentaje del volumen de la madera extraída al año en Galicia.
- Es una gran fuente de pasta de papel.
- La miel que crean las abejas a partir del néctar de eucalipto es muy apreciada.
- Presenta otros beneficios además de los anteriores.
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