摘要
杉木３种不同造林模式林地的水、土、肥流失表现为“传统型”＞“世行型”＞“生态型”的规律。用混合型数量化模型进行因素分析结果表明：炼山是影响杉木幼林地水土流失的首要因子，其次是整地方式、套种绿肥、栽植点配置、幼林抚育方式等人为营林措施，保留采伐剩余物、套种绿肥等增加林地地表覆盖的措施，均有很好的防止水土流失效果。并提出改革现行的营林技术措施，着手研究“生态经济型”的栽杉新模式。
The law of water and soil loss in three Chinese Fir plantations which were planted in three different models respectively was 'traditional type' > 'world band type' > 'ecological type'. Through factor analysis, applying mixed quantification theory model, the results showed that controlled burn was the first factor affecting the water and soil loss. Site preparation, intercropping green manure, patterns of planting hole and nurturing method were also important factors. Lumbering remainder and intercropping green manure etc. could bring about good effects for controlling water and soil loss. Moreover, the measure of reforming present cultural technique and the new eco-economic planting Chinese Fir model were put forward.
基金
国家"七五"攻关课题
