|
Terminalia nigrovenulosa Pierre ,also called Jijian or Jizhan, a kind of deciduous tree of Combretaceae Quisqualis is a first-rate commodity timber tree, having hard material, hardly out shape without cracking, yellowish-brown wood color, invisible duramen with beautiful veins, resistance to corrosion and sea water immersion. It is an excellent timber for shipbuilding, bridge, vehicle, construction, furniture and so on. Terminalia nigrovenulosa Pierre was introduced from Hainan in 1976 by Yinzhan tree farm and now with 46 trees survived that have experienced phenological observation since 2005 and stem analysis in 2008 that help to draw the height growth curves and the trunks longitudinal section diagrams, and calculate the DBH, tree height, total growth and growth rate of the timber volume at each age gradation. Terminalia nigrovenulosa Pierre in the introduction area can blossom and bear fruit with strong adaptability according to the investigation and analysis of surviving timber in trial forestry where the seeds can germinate into seedling naturally to form the regeneration layer based on the 2010 survey of the natural forest regeneration. The results indicate its great adaptability to the local climatic conditions as a successful introduction in Yinzhan Qingyuan and the great value in artificial plantations in the southern part of Qingyuan and the south region of Guangdong province in the future.
|
过刊浏览