摘要
通过网格取样、抽样调查方法,对辽宁省公路绿化立地状况、现有绿化模式及树种等进行全面调查,汇总分析,指出当前公路绿化存在的一些问题并对进一步提高公路绿化水平提出几点建议。
Through grid sampling, the paper investigates comprehensively the afforestation places on highway, afforestation available mode and breeds of trees, indicates out some problems existing in afforestation at present and makes a few suggestions on further improvement of afforestation level.
出处
《北方交通》
2006年第4期47-50,共4页
Northern Communications
关键词
抽样调查
公路绿化
现状
Sampling for investigation Highway afforestation Present situation