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实施退耕还林是近年来我国积极推行的一项改善生态环境、调整农业种植结构的一项主要政策措施。工程建设范围包括24个省(区、市)及新疆生产建设兵团的1854个县(市、区、旗),按2001年至2005年退耕还林666.67万 hm~2,2001年至2010年退耕还林1466.67万 hm~2,并相应地安排宜林荒山荒地造林面积。总投资约需3580亿元。工程完成后,预期新增林草植被面积3200万 hm~2,工程区林草覆盖率增加5个百分点;控制水土流失面积8666.67万 hm~2,防沙固沙控制面积10266.6万亿 hm~2。它的实施将会给我国生态建设带来极大的改观。另外
The implementation of returning farmland to forestry is one of the major policies and measures that China has actively promoted in recent years to improve the ecological environment and adjust the agricultural planting structure. The scope of construction includes 1854 counties (cities, districts and municipalities) of 24 provinces (autonomous regions and municipalities) and Xinjiang Production and Construction Corps. According to 2001-2005, 6.6667 million hm ~ 2 will be returned from farmland to forest and from 2001 to 2010 14.6677 million hm2, and arrange afforestation area of barren mountain and wasteland in Yilin accordingly. The total investment is about 358 billion yuan. After the completion of the project, it is expected that the area of newly-added forest and grass vegetation will reach 32 million hm 2, and the coverage of forest and grass in the project area will increase by 5 percentage points; the soil erosion control area will be 86,666,700 hm 2 and that of sand control and sedimentation will be 10266.6 trillion hm 2. Its implementation will bring great changes to our country’s ecological construction. In addition