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三北防护林体系建设,是1978年11月由国务院批准,在横贯我国西北、华北北部、东北西部开展的一项大型防护林体系建设工程,这个工程东西长七千多公里,总面积三百四十七万平方公里,占全国总面积的40％,包括新疆、青海、甘肃、陕西、宁夏、内蒙古、山西、河北、北京、辽宁、吉林、黑龙江十二个省、市、自治区。其目的是通过大力种树种草,恢复和发展植被,控制风沙危害和水土流失,改善生态条件,创造一个人类生存的良好环境,为在本世纪末将经济建设的重点转向大西北提供基础。进行三北防护林体系建设是一项具有战
The construction of the Three North Shelterbelt system was approved by the State Council in November 1978 as a large-scale shelter forest project started in northwestern China, northern North China and western Northeast China. This project has a total length of more than 7,000 kilometers and a total area of 340 It covers an area of 70,000 square kilometers, accounting for 40% of the total area of the country, including Xinjiang, Qinghai, Gansu, Shaanxi, Ningxia, Inner Mongolia, Shanxi, Hebei, Beijing, Liaoning, Jilin and Heilongjiang provinces and municipalities. Its purpose is to create a better environment for human survival by vigorously planting trees and grass, restoring and developing vegetation, controlling wind and sand hazards and water and soil loss, improving ecological conditions, and providing a basis for turning the focus of economic construction toward the Greater Northwest by the end of this century. The construction of the Three North Shelterbelt system is a war effort