植物多样性理论在城市广场景观评价中的应用——以怀化市五溪文化广场为例

Application about Plant Diversity in Landscape Evaluation of Urban Square——Taking Wuxi Cultural Square in Huaihua City as an Example

在研究现行的几种景观评价方法的基础上,指出植物多样性理论在景观评价中的作用。植物多样性指数能在一定程度上反映场景中的植物种类、植物个体数量,但它却不适于做为评价景观效果的直接指标;植物多样性指数在一定程度上反映了场景的客容量、景观场景供游人参与园林活动的机率:D→0或D→1,游人参与园林活动的机率低,D→0.5,游人参与园林活动的机率高;D值越大,景观场景中植物种类与个体数量越少,乔木类所占比例越低。为使景观评价方法更客观、科学,对园林景观场景中野生杂草与人工疏林中的耐践踏草种类多样性统计问题进行更深入地研究。

It was pointed that plant diversity is playing an important role in landscape evaluation based on the several ways of landscape evaluation.Plant diversity index in some extent reflected the plant species,plant abundance in the scene.But it was not a suitable direct indicators of landscape evaluation effect;plant diversity index to an extent,reacted passenger capacity of scene,probability visitors participating in garden activities：D→0 or D→1,the probability was low,D→0.5,the probability was high;the bigger value of D was,the lower probability visitors participating in garden activities and the lower proportion of arbor.To make landscape evaluation methods more objective and scientific,multiplicity statistics about wild weeds in botanical garden landscape and bears tranples weeds in artificial sparse should be studied deeply.