兰州北山无灌溉区人工造林,林地覆盖是一项不可缺少的技术措施,而生态垫覆盖则是首选且值得推广的做法。生态垫覆盖后,林地自然因子和林木生长因子,都较其他覆盖措施有大幅度改善,为林木创造了生长必需的水分、养分、微生物等微域小环境,提高了造林成活率、保存率;生态垫覆盖可减少每年苗木费、造林费等连续投入。 Afforestation in Beishan, Lanzhou irrigated area, forest cover is an indispensable technical measure, and ecological mat coverage is the preferred and worth promoting practice. Compared with other coverage measures, natural factors and tree growth factors of forest land have been significantly improved after the ecological pad was covered, creating the micro-environment such as water, nutrients and microorganisms necessary for growth and improving the survival rate and preservation rate of forestation. Ecological pad coverage can reduce annual seedling fees, afforestation fees and other continuous investment.