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自1981年以来,冠县林业有了突飞猛进的发展。到1986年,路旁基本上栽满了树(总长5000余公里),农田林网化面积达115万亩(占耕地面积的98.3％),农林间作76.7万亩,营造片林13.52万亩。全县活立木蓄积62.5万m~3,林木覆盖率达到了22.2％。林产品收入有了大幅度增长,也获得了明显的生态效益和社会效益。但是,笔者在调查中也发现了不少问题,本文针对这些问题作一探讨。一、评价依据及计算方法问题营造人工林可以获得经济效益生态效益和社会效益,本文所讨论的仅限于经济效益。如上述,冠县的林业获得了巨大发展,这里就有一个如何正确评价营建效益
Since 1981, Guanxian forestry has made rapid development. By 1986, roadsides were basically planted with trees (total length of more than 5000 km), farmland network area of 115 million mu (accounting for 98.3% of arable land), 76.7 million mu of agriculture and forestry, and 13.52 million mu of forest. The county living 625000 m3 ~ 3, tree coverage rate reached 22.2%. The income of forest products has increased substantially, and also obtained significant ecological and social benefits. However, I also found a lot of problems in the survey, this paper addresses these issues. First, the evaluation basis and calculation method to create artificial forests can obtain economic benefits of ecological and social benefits, the paper discussed is limited to economic benefits. As mentioned above, Guanxian forestry has made tremendous development, there is a how to correctly evaluate the construction benefits