论文部分内容阅读
1.关于世界森林覆盖率。课本分别讲为22%和31.3%,宜统一。根据《人民日报》发表的有关文章,现在地球森林面积为4102万km.2,森林覆盖率为31.7%。 2.我国的沿海防护林带已大部分建造。从1988年开始的沿海防护林体系已营造沿海基干林带10639km,能控制2.47万km~2耕地的农田林网,沿海地区有林地面积达到6.60万km~2。 3.我国海域油田已出产石油。除原有的渤海中油田外,现在南海中油田已年产原油200万t以上。
1. About the world’s forest coverage. The textbooks are respectively 22% and 31.3%, and should be unified. According to relevant articles published in the People’s Daily, the area of the Earth’s forest is now 41.02 million km.2, and the forest coverage rate is 31.7%. 2. Most of the coastal shelter belts in China have been built. The coastal shelter forest system that began in 1988 has established 10639 km of coastal forest belts and can control 24,700 km2 farmland forestland. The area of forest land in coastal areas has reached 6600 km2. 3. China’s offshore oil fields have produced oil. In addition to the existing Bohai Oilfield, the South China Sea Oilfield now has an annual output of more than 2 million tons of crude oil.