论文部分内容阅读
被誉为世界生态工程之最的三北防护林体系建设,又传捷报。计划10年完成的二期工程,从1986—1993年进行了8年,提前2年超额完成二期规划任务。此间共完成人工造林833.3万hm~2,封山封沙育林373.3万hm~2,飞机播种造林40万hm~2,分别为10年规划任务的131%、240%、223%,零星植树40亿株。内蒙古、山西、陕西、新疆的各项建
Hailed as the world’s ecological engineering of the most three North Shelterbelt system, and handed down. The second phase of the project, completed in 10 years, took 8 years from 1986 to 1993 and surpassed the second phase of the planning task by 2 years in advance. A total of 8,333,000 hectares of man-made afforestation, 3,733,000 hectares of sealing and closing sapling and afforestation, and 400,000 hectares of aircraft sowing and afforestation were completed, accounting for 131%, 240% and 223% of 10-year planning tasks respectively. Sporadic tree planting 40 One hundred million strains. Inner Mongolia, Shanxi, Shaanxi, Xinjiang’s various construction