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岩溶石灰岩山地属于典型的生态脆弱区,是人工造林的困难地段。本文在石灰岩山地上采用“栽针留阔抚灌”和“栽阔留针抚灌”两种模式研究了植被群落组成和生物量的变化。结果显示,两种模式均可明显提高森林覆盖度,并且能使群落向着理想的方向发展。两者相比,“栽针留阔抚灌”模式效果更好。
Karst limestone mountains belong to the typical ecological fragile area, which is a difficult site for afforestation. This paper studied the changes of vegetation community composition and biomass in the limestone mountainous areas by using two modes of “planting and leaving the width and the width of the stump”. The results show that both modes can significantly improve the forest coverage, and can make the community to the ideal direction. Compared to the two, “planted stay caress irrigation ” model works better.