目前,我国天然林保护工程的实施,把营造速生丰产林推到了更加重要的地位。1991～2000年由原林业部利用世界银行对中国的第1、2期林业贷款,在河北、河南、辽宁等6省营造25.5万公顷的杨树丰产林。两期世界银行贷款期间,河北省杨树造林面积和原有的杨树面积就达10多万公顷。造林项 At present, the implementation of the natural forest protection project in China has pushed the construction of fast-growing and high-yield forests to a more important position. From 1991 to 2000, the former Ministry of Forestry made use of the World Bank’s No. 1 and No. 2 forestry loans from the World Bank to create 255,000 hectares of poplar high-yield forests in 6 provinces including Hebei, Henan and Liaoning. During the two World Bank loans, the poplar area in Hebei Province and the original area of ​​poplar reached more than 100,000 hectares. Afforestation