Monday, May 5, 2008

EXPORTING EXOTIC SPECIES

By: Tasso Resende de Azevedo, Brazil

The Eucalyptus hatd its natural habitat in Australia, but was transplanted with success all over the world. In Brazil, its cultivation was developed to provide firewood for the trains of the CEEP – Companhia Paulista de Estrada de ferro in the 60’s.

However, the exceptional wood characteristics and the perfect acclimatization of (variety) species to the most diverse climatic conditions and soils that Brazil, presents position the Eucalyptus between the most important species used in the reforestation in the country.

In the late 60’s and during the 70’s and 80’s, a policy of low taxes encouraged the research and the expansion of the areas planted with Eucalyptus. Nowadays the species supply basic elements for paper and pulp industries, charcoal for siderurgy, wood for panels, boards and lamp-posts among others. These product are exported too many countries.

The most significative species in Brazil are Eucalyptus grandis and Eucalyptus urophyla. For these two, a few years of research were carried out and if in the beginnings of 70’s its cut-age was 15-20 years, today the companies are working with cycles of 4-7 years and a productivity of 50-70 st/ha/yeas. The clones produced in some places can produce more than 100 st/ha/year. The cost of production is around US$ 1700,00/ha on the first rotation and US$ 650,00/ha on the second and subsequent.

Besides these many others are used. One that has interesting destiny Eucalyptus citriodora; essential oils produced from its leaves are used in the pharmaceutical industry.

Some institutes like IPT – Technological Research Institute – are studying the possibilities of using the Eucalyptus as timber-wood in civil buildings, houses, the furniture industry and others.

But it’s not all wonderful, if on one hand the Eucalyptus together with other exotic species, helps to reduce the pressures on the tropical forests, having, for example, to obtain of pulp and paper companies their products exclusively from the plantations, on the other hand many of areas virgin forests were clear cut to plant Eucalyptus, like in the north of Espirito Santo State.

1 comment:

ed said...

一夜情聊天室,一夜情,情色聊天室,情色,美女交友,交友,AIO交友愛情館,AIO,成人交友,愛情公寓,做愛影片,做愛,性愛,微風成人區,微風成人,嘟嘟成人網,成人影片,成人,成人貼圖,18成人,成人圖片區,成人圖片,成人影城,成人小說,成人文章,成人網站,成人論壇,情色貼圖,色情貼圖,色情A片,A片,色情小說,情色小說,情色文學,寄情築園小遊戲, 情色A片,色情影片,AV女優,AV,A漫,免費A片,A片下載

情色,A片,AIO,AV,日本AV,色情A片,AV女優,A漫,免費A片,A片下載,情色A片,哈啦聊天室,UT聊天室,聊天室,豆豆聊天室,色情聊天室,尋夢園聊天室,080視訊聊天室,080聊天室,080苗栗人聊天室,免費視訊聊天,上班族聊天室,080中部人聊天室,視訊聊天室,視訊聊天,成人聊天室,一夜情聊天室,辣妹視訊,情色視訊,成人,成人影片,成人光碟,成人影城,自拍

A片,AIO,AV,日本AV,色情A片,AV女優,A漫,AIO交友愛情館,線上A片,免費A片,A片下載,情色A片,微風成人,嘟嘟成人網,成人,成人影片,成人光碟,成人影城,成人交友,愛情公寓,色情聊天室,情色貼圖,色情,色情影片,做愛,情色,哈啦聊天室,聊天室,UT聊天室,豆豆聊天室,尋夢園聊天室,080視訊聊天室,080聊天室,080苗栗人聊天室,自拍,性愛

情趣用品,情趣用品,情趣,情趣,A片,A片,情色,A片,A片,情色,情趣用品,情趣用品,A片,A片,情色,情色

情色視訊,美女視訊,辣妹視訊,視訊聊天室,視訊交友網,免費視訊聊天,視訊交友90739,視訊,免費視訊,情人視訊網,視訊辣妹,影音視訊聊天室,視訊交友,視訊聊天,免費視訊聊天室,成人視訊,UT聊天室,聊天室,豆豆聊天室,色情聊天室,尋夢園聊天室,聊天室尋夢園,080聊天室,080苗栗人聊天室,上班族聊天室,小高聊天室