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通过对新街~河口高速公路沿线的次生裸露边坡自然恢复植被的调查,共发现植物41种、23科。自然恢复2年的边坡为红藤+葛藤+狗牙根植被群落,自然恢复20年的边坡为粽叶芦+马鹿草+山蚂蝗植被群落,自然恢复40年的边坡为滇桐+银合欢+荩草植被群落。通过对物种丰富度、均匀度及优势度的研究,结果表明,新街~河口高速公路沿线次生裸露坡面随着自然恢复时间的增加,其物种丰富度和乔木优势度不断增加,占优势群落的均匀度也在逐渐增大。
A total of 41 species and 23 families of plants were found through the investigation of the natural vegetation restoration on the secondary exposed slope along the Xinjie-Hekou Expressway. Natural slope restoration for two years is that of the red vine + kudzu + bermudagrass. The 20-year-old slopes are the Zongyelu + red deer grass + mountain grasshopper vegetation communities, and the natural slope for 40 years is Diantong + Acacia + Humulus vegetation communities. The results of research on species richness, evenness and dominance show that the species richness and tree dominance of the secondary bare slope along Xinjie-Hekou Expressway increase with the increase of natural recovery time Community uniformity is also gradually increasing.