一、人工林的战略地位森林是人类最早的栖息场所、食物宝库、能源基地,是人类文明的起点。人类文明的发展,人口的增加,首先使人们感到森林提供的食物有限,迫使人们学习农牧业生产。落后的农牧业不断蚕食着森林面积。现代工业的发展,城市兴起,交通发达、更使森林面积急速减 First, the strategic position of plantation forests are the earliest human habitats, food treasurer, energy base, is the starting point of human civilization. The development of human civilization and the increase of population have at first made people feel that the food provided by forests is limited and people are forced to learn the production of agriculture and animal husbandry. Backward agriculture and animal husbandry continue to erode the forest area. The development of modern industry, the rise of the city, and the developed traffic have led to the rapid reduction of the forest area