金沙江干热河谷稀树灌草丛植被恢复方式研究

Study on the Ways of Vegetation Regeneration of Savanna Shrub &Grass in Jingshajiang Dry-hot Valley

论述了金沙江干热河谷稀树灌草丛植被区自然概况,植物群落演替基本理论及封山育林(自然演替)与人工造林(人工促进恢复)2种恢复方式区基本情况。通过对比研究,结论是:封山育林自然演替3年后的稀树灌草丛,植物群落比人工促进恢复方式的复杂,生物多样性体现较好,灌木类逐渐转向耐旱、耐热、耐火、更新力强的抗逆类型发展,每获得1kg生物量的投入是人工播种方式的1/3。

The natural situation of the vegetation of savanna shrub & grass in Jingshajiang dry-hot valley, and basic theory of community succession as well as two regeneration ways of natural succession and artificial afforestation are all discussed. The comparative study concluded that on the one hand the communities by natural succession are more complicated and biodiversity appearances than artificial ones; on the other hand shrub gradually transform to resist drought, hot, fire and to show more vitality. Input for obtaining 1kg biological yield is one third that of artificial afforestation.