topic: about species of pine

[Trung]

Today, with the development of industry, urbanization, and land encroachment conditions which are becoming more and more popular have caused loss of large amounts of forest areas. Furthermore, many regions have been deforested and burnt for firewood and agricultural development more and more, especially pine forest in Vietnam. For instance, over 20.000 hectares of pine forest at Quang Trach distrist, Quang Binh province, Vietnam (age 20 years) was cut down to build many houses, factories and companies and develop agricultural expansion. Therefore, ecological environment has been seriously regressed and reduced, land and resources have been degenerated and eroded. They were led to droughts, floods, natural disaster in which have frequently occurred.
For these reasons, species of pine (Pinus merkusii) not only brought the high effect of economy but also protected ecological environment and human health, served the scientific research, and improved impoverished soil. This species easily lived on poor, dry and acid solids, slow land drainage, thin topsoil with many rocks together where a lot of other plants could not grow, but these pine-trees still normally grew and developed. Consequently, this species was grown many places in Vietnam such as, Tay Nguyen province, Quang Nam province, Da Nang province, Thanh Hoa province… and all over the world.

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