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林业生产,在地域上的差异叫林业地域分异。这种地域差异不仅到处存在,并且各有其历史形成过程。其种类有地带性差异和非地带性差异两种。地带性差异包括两个方面:一、地球的纬度地带性主要表现为热量条件的地域差别。在我国,从北到南有寒温带、温带、暖温带、北亚热带、中亚热带、南亚热带、热带和赤道带。我国南北相距5.500公里,最南的南沙群岛≥10℃的年积温可达10.000℃,海
Forestry production, the geographical difference is called the forestry regional differentiation. This geographical difference not only exists everywhere, but also has its own historical formation process. There are two types of zonal differences and non-zonal differences. Zonal differences include two aspects: First, the latitude of the earth is mainly manifested as regional differences in thermal conditions. In our country, there are frigid, temperate, warm temperate, northern subtropical, subtropical, subtropical, tropical and equatorial belt from north to south. 5.500 km apart from north to south in China, the southernmost Nansha Islands ≥ 10 ℃ annual accumulated temperature up to 10.000 ℃, the sea