Poplar is the main timber tree species in Chaoyang region.
杨树是朝阳地区的主要用材树种。
Tectona grandis classified as Tectona plant of Verbenaceae is one of the most valuable timber tree species in the world.
柚木为马鞭草科柚木属植物，是世界上最珍贵的用材树种之一。
Some species of tree have been read out of the party by economics-minded forestersbecause they grow too slowly, or have too low a sale vale to pay as timber crops.
有些种类的树木已经被有经济头脑的林农淘汰出局，因为它们生长得太慢，或者作为木材作物的售价太低。
Some species of tree have been 'read out of the party' by economics-minded foresters because they grow too slowly, or have too low a sale value to pay as timber crops.
有些种类的树木已经被有经济头脑的林农淘汰出局，因为它们生长得太慢，或者作为木材作物的售价太低。
Tree plantations, usually created as rows of a single species destined for harvest for timber or pulp, "have a bad reputation," Alain Paquette says.
通常为了用作木材或是纸浆而将单一品种的树木成排种植的种植业“臭名远扬，”AlainPaquette说。
It is important to lower the timber consumption of valuable tree species and improving the quality of products.
对降低珍贵树种的消耗，提高产品的质量和附加值具有重要的意义。
Poplar is the important tree species for shelterbelt and timber forest in our country. However, rapidly and fiercely-spreading by disease and pest has led to tremendous economic losses.
杨树是我国重要的防护林和用材林树种，但病虫害的迅猛发展造成了巨大损失。
Poplar is the important tree species for shelterbelt and timber forest in our country. However, rapidly and fiercely-spreading by disease and pest has led to tremendous economic losses.
杨树是我国重要的防护林和用材林树种，但病虫害的迅猛发展造成了巨大损失。
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