普洱地区桉树人工林下植物种类调查

桉树因其生长快、抗逆性强、用途广而被世界各国广泛种植。但随着规模化的种植,桉树人工林结构过于简单,林下植物多样性下降等问题不容忽视。通过对普洱市桉树人工林下植物种类的调查,发现桉树人工林下植物的结构为灌木—草本类型和纯草本类型:灌木层主要以紫金牛科、野牡丹科、锦葵科、蝶形花科等植物占优势;草本层则是以菊科、禾本科、蕨科等植物为主要优势种。这些植物多属当地先锋植物或耐旱种类,而非地带性森林植被下的常见组成种类。

Plant Species in Planted Eucalyptus Forest in Puer Region

Due to fast growing,strong tolerance to stress and broad usage,Eucalyptus is widely planted around the world.However,we can not ignore the problem on simple structure and poor vegetation diversity of planted Eucalyptus Foreston large scale.The results from investigation have indicated that there are only shrub-vegetation and pure-herb-layer distributed in the planted Eucalyptus Forest.Myrsinaceae,Melastomataceae,Malvaceae,and Papilionaceae are the dominant species in shrub-vegetation while Compositae,Gramiaceae and Pteridiaceae in the pure-herb-layer.These species are mostly local pioneer plants or drought-resistant species but not commonly plants in local vegetation zone.