论文部分内容阅读
巴西位于南美洲,其国名源于一种珍贵的树木——巴西木,说明森林对巴西的重要意义。巴西全国林地面积3.2亿公顷,有森林2.4亿公顷,森林面积仅次于苏联,占世界第2位;森林覆被率为28％,总蓄积量480亿立方米,年生长量为3.34亿立方米。巴西境内的植物种类异常丰富,单是高等植物就有4万种,木本植物7000种,其中适用于工业的200多种,实际利
Located in South America, Brazil derives its name from a precious tree, Brazilian wood, which shows the significance of forests to Brazil. Brazil’s national forest land area of 320 million hectares, 240 million hectares of forest, forest area second only to the Soviet Union, the world’s No. 2; forest cover rate of 28%, the total volume of 48 billion cubic meters, the annual growth of 334 million cubic meters Meter. The species of plants in Brazil is extremely rich. There are 40,000 species of higher plants and 7,000 species of woody plants, of which more than 200 are suitable for industrial use. The actual profit