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过去,北京市远郊公路绿化工作取得一定成绩,截止1982年底,县以上公路3,808公里中已绿化3,556公里,为91.6％。其中干线公路1922公里,宜林路段全部实现了绿化;共有树木三十余个品种160万株,木材蓄积量达36万立方米。为了进一步提高公路绿化水平,重点干线公路必须进行绿化设计;没有设计就不会有符合实际的予算,施工和抚育管理也无从谈起。总结过去的经验教训,结合自己从事绿化工作的体会,仅就公路绿化设计提出以下初步见解。
In the past, afforestation of the outskirts of Beijing highway achieved some success. As of the end of 1982, 3,556 km of 3,808 km of roads above the county level had been greened with 91.6% of the total area. Among them, 1922 kilometers of trunk roads and all the sections of Yilin are greening. There are 1.6 million trees with more than 30 varieties of trees and 360,000 cubic meters of timber. In order to further improve the level of highway greening, the key trunk highway must be afforestation design; no design will not have realistic calculations, construction and tending management also can not talk about. Summarizing the past experiences and lessons, combined with my own experience in afforestation work, I only put forward the following preliminary opinions on highway greening design.