Indeed teak forests should be maintained so as not endangered and extinct

Teak forests are the dominant forest type covered by teak (Tectona grandis). In Indonesia,teak forests are found mainly in Java. But now also has spread to many regions such as the islands of Muna, Sumbawa, Flores and others.
Teak forests is the oldest managed forest in Java and also in Indonesia, and one of the best type of forest management.

Teak Java, native or introduced? The experts (Altona, 1922; Charles, 1960) assumed that the teak in Java brought by the Hindus of India at the end of time Hindus (X1V beginning of the century, until the early sixteenth century). But some other experts who denied, and stated that there is no reason strong enough to declare that the Javanese teak is not native plants (Whitten et al., 1999). Hypothesis introduction of teak from India to Java, of course, difficult to avoid, given the nature of the wood which is very well known since hundreds of years, so of course, humans are very important role especially in the most recent deployment. Yet according to Peluso (1991), when Dutch traders landed in Java in the mid-seventeenth century, they found a mixture of standing teak teak or even almost pure stands that stretched hundreds of kilometers in the central part of the island of Java. If the hypothesis is justified introduction of teak from India, the introduction has been held in more ancient times, at least around the sixth century, when the cultural exchange between India and Indonesia take place very strong. But there is no historical record that reinforces that notion. On the other hand the introduction hypothesis teak from India to Java, also raises difficult questions, especially about the discovery of natural teak populations in some remote island in Indonesia as in Madura, Muna, and his absence on islands other than Java while on the island - the island (eg Sumatra ) also plays an important role in human migration routes between India, Thailand, Cambodia, China, Japan. Based on Gartner's (1956) doubted the hypothesis Altona, as well as Troup (1921) which tend to assume that the existence of teak in Java and several islands in Indonesia are alami.Penelitian Kertadikara (1992) who studied the genetic diversity of some populations of teak India, Java and Thailand with using isoenzym and morphological data, showed that the population of teak from India has a very distinctive genetic structure that is much different from the population of Java teak and Thailand. While the population genetic structure of Thai teak closer to the population genetic structure of Javanese teak. The results of these studies indicate that the identity of the first population of India has long been geographically isolated from other population-populasijati. Second, if the hypothesis of india introduction to Java teak is justified, it should be visible proximity between population genetic structure of Java and India. Based on the Kertadikara (1992) tends to the natural migration hypothesis identity of its natural distribution center in mainland Southeast Asia (which is most likely located in Myanmar), using the island to the mainland which connects Asia with the islands of Indonesia in the Pleistocene period. Antra relationship mainland Asia and Indonesia archipelago is made possible due to reduction in sea levels of about 100 to 120 m lower than permukaannnya now. While the successful installation of teak in Java and several other islands depend entirely on the needs of climatic and edafik, which led to the spread of natural teak is discontinuous.