论文部分内容阅读
１９９０～２０４０年世界工业用圆木的供需趋势根据国际热带木材组织（Ｉ．Ｔ．Ｔ．Ｏ）透露，世界工业用圆木的需求将呈增长趋势１９９０年的需求量为２１．０～２３．０亿ｒｎ３，预计２０００年的需求量为２３．０～２７．０亿ｍ３，增长率为９．５２～１７．３９％；...
From 1990 to 2040, according to the International Tropical Timber Organization (I.T.T.O.), the world’s demand for industrial roundwood will show a growing trend. The 1990 demand is 21.0-23. 100 million rn3, the demand for 2000 is expected to be 23.0 to 2.7 billion m3, and the growth rate is 9.52 to 17.39%;...