论文部分内容阅读
为了有效遏制土地沙化和盐碱化,减少浮尘、扬沙和沙尘暴对城市的危害,计划在长春市西部和西北部营造防风御沙林。该工程建设期为5年(2003-2007年)。造林总面积6900.6hm2,完成后全市将新增森林覆盖率0.4个百分点。
In order to effectively curb land desertification and salinization and reduce the hazards of dust, sand and sandstorms to the cities, it is planned to create a windproof sarin in the west and northwest of Changchun. The construction period of this project is 5 years (2003-2007). The total afforestation area of 6900.6hm2, after the completion of the city will add forest coverage 0.4 percentage points.