论文部分内容阅读
封山育林,是利用树木的天然下种和萌芽萌蘖能力,有计划有步骤地,把疏林、散生母树、老采伐迹地、火烧迹地、灌木林,以及有恢复植被可能的荒山荒地等,通过禁封和培育,逐渐繁衍成为森林、灌木林和草地植被的一种造林育林方法。它是加速森林资源培育,扩大植被覆盖面积的重要手段之一。封山育林,较人工造林有以下优点:一是不须整地、打塘、播种,用工少,成本低,见效快。特别是云南。水热条件好,一般封育3～5年,或8～10年,便可恢复成林。
Closing hillsides for afforestation is the use of natural undergrowth and sprouting of tillers, and the systematic and step-by-step transformation of sparse forests, scattered mother trees, old cuttings, burned-out areas, shrubbery, and barren hills and wastelands with potential for restoration of vegetation Forbidding and nurturing, and gradually multiply into forest, shrub and grassland vegetation afforestation method. It is one of the important means to speed up the cultivation of forest resources and expand the vegetation coverage. Closing hillsides for afforestation has the following advantages over artificial afforestation: First, it does not need land preparation, pond planting, seeding, less labor, low cost and quick results. Especially in Yunnan. Water and heat conditions are good, usually 3 to 5 years of incubation, or 8 to 10 years, can be restored into forest.