论文部分内容阅读
本文综述了林地用火与水土流失关系,阐明在北方及南方平原林地“规定用火”或“迹地用火”后,土壤渗透性能得到改善,水土流失较为轻微;而在南方山区,强度火烧后水土流失较为严重,陡坡地段可蚀性较强的土壤水土流失尤为严重.根据火后土壤生境特点及用火现状,指出林业用火与耕作制度有机组合,形成特定的“农林业系统”,将为南方林业生产带来重大改革.
This paper reviews the relationship between forest fires and water and soil loss, clarifies that the soil permeability is improved and the soil erosion is relatively slight after the “prescribed fire” or “trail fire” is used in the woodlands in the north and south plains. However, in southern mountainous areas, Soil and water loss is more serious and soil erodibility is more serious in steep slopes.According to the characteristic of soil habitat and the current situation of using fire, it is pointed out that forestry use fire and farming system organic combination to form a specific “agroforestry system” Great reforms have been brought to forestry in the South.