北京市居住区绿地植物组成及结构类型分析

Community structure types and plants composition of residential greenbelts in Beijing

通过对北京市区五环内居住区生物多样性和绿地结构类型的抽样调查,结果表明:北京市区居住区共有维管束植物68科178属273种,其中少种科属和区域性单种科属占很大比重;栽培植物中,乡土物种优势度低,为37.18%;绿地结构类型数目中,乔、灌、草交互组成的复层结构占优势。

Based on a systematic investigation of residential biodiversity in Beijing built area, the result showed that there were 273 vascular plants species which belonged to 178 genera and 68 families in Beijing residential greenbelt. Among them, those fewness famihes and genera which included only few or single species account for a big proportion. The predominance of native species was very low in artificial plants, 37.18% of total artificial plants. The number of the communities with two or three layer structure of trees, shrubs and grasses were in dominant.