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近年来,亚太地区不少国家森林面积在不断减少,水土流失严重。据国际粮农组织资料,在1976至1980年间,平均每年减少森林面积大约200万公顷;而在1981至1990年间。森林面积平均每年减少将近470万公顷,其中森林面积减少得最多的国家有印度、印度尼西亚、缅甸、菲律宾、泰国和越南。为了尽快恢复森林资源,目前几乎所有国家都在大力发展人工林。据统计,孟加拉国每年造林面积在1至2万公顷。截止1990年底已累计造林33.59万公顷。印度为了鼓励造林,免费提供苗木,有的还建立奖励制度,建立示范林和造林后提供技术指导,使造林工作得到广泛的开展。到1991年为止,印度共营造了将近1600万公顷人工林。印度尼西亚
In recent years, the forest area of many countries in the Asia-Pacific region has been declining continuously, with serious soil erosion. According to the FAO, an average of about 2 million hectares of forest were reduced annually between 1976 and 1980; from 1981 to 1990 on average. On average, the forest area has decreased by nearly 4.7 million hectares per year, with India, Indonesia, Myanmar, the Philippines, Thailand and Vietnam among the countries with the largest reduction in forest area. In order to restore forest resources as soon as possible, almost all countries are now vigorously developing plantations. According to statistics, Bangladesh has an annual afforestation area of 1 to 20,000 hectares. By the end of 1990, a total of 335,900 hectares of afforestation had been made. In order to encourage afforestation in India, seedlings are provided free of charge and some countries also set up rewards systems, set up demonstration forests and provide technical guidance after reforestation so that afforestation work is widely carried out. By 1991, India had built nearly 16 million hectares of plantations. Indonesia