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四川位于我国内地陆腹地,西为西藏高原扼控,东有长江三峡之险,北有秦岭、大巴山屏障,南以云贵高原所拱卫.境内地势、地形变化较大,自然条件复杂,呈多种气候类型,植物种类多,资源十分丰富.土地资源以山地、丘陵居多,其中山地面积占49.51%,高原占28.5%,丘陵占18.64%,平原占2.54%,山间宽各占0.81%.从土地资源的构成看,耕地占11.6%,林地占26.8%、宜林地占9%,余为草地和其它用地.自然条件和土地资源现状,预示了林业在我省经济建设中的重要地位和发展潜力.但从现有森林资源数量看,覆被
Sichuan is located in the hinterland of the hinterland of the hinterland of our country, controlled by the Tibetan Plateau to the west and the Three Gorges of the Yangtze River to the east, with the Qinling Mountains and Daba Mountains in the north and the Yunnan-Guizhou Plateau in the south, with vast changes in the terrain and complicated natural conditions. Most of the land resources are mountain and hills, with 49.51% of the mountain area, 28.5% of the plateau, 18.64% of the hills, 2.54% of the plain and 0.81% of the width of the mountain. From the composition of land resources, cultivated land accounts for 11.6%, forest land occupies 26.8%, forest land accounts for 9%, and rests for grassland and other land. The natural conditions and land resources status indicate the importance of forestry in the economic construction of our province and Development potential.But from the existing number of forest resources, cover