关键词:园林植物； 城市生物多样性； 植物规划； 物种选择； 物种入侵
Key words:landscape plants; urban bio-diversity; plant planning; species selection; species invasion
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——包满珠[BAO Man-zhu]　(2008年 第07期 )

摘要:目前我国城市绿化物种选用的突出问题是：植物种类普遍偏少，多样性贫乏；地域性特征不明显，城市之间雷同；引进外来物种缺乏前期试验，存在较大的盲目性；对外来物种入侵问题尚未引起足够的重视。建议在全国范围内开展全面的树种调查与规划协作，在增加物种的同时，注重主要物种的遗传多样性，显现地方特色，塑造城市园林特色景观；植物选择应该以久经考验的乡土植物为主，适当引进其他物种；对城市园林草本植物的选择除了一些常见草花之外，应该大力挖掘当地适应性强的多年生草本花卉，从而节约成本，提高物种的多样性。外来草本植物的引进一定要注意对其潜在的环境影响进行评估，避免引进恶性蔓延物种。

Abstract:Based upon the analysis of current status of green space system planning and the selection of landscape plants in urban area of China, some ideas and opinions were proposed: the main problems in landscape plants selection and application were species diversity is low and indigenous characteristics of local city is not obvious, while the foreign plants were not characterized carefully before their using in urban plantation and little attention were paid to the alien species invasion problem. A nation-wide investigation and exploration of indigenous landscape plants should be planned and implemented, and special attention should be given to species diversification and genetic diversity collection of important plant species; indigenous plants (including trees and herbaceous plants) should play major role in landscaping of urban areas so as to strengthen the local features of the cities, and more careful studies should be carried out for introduced plant species so as to prevent from the dispersing of invasive plants out of control.