城市绿地植物多样性的图形化实现

研究随机抽取北京市原城8区内464处各类绿地,进行园林植物调查,计算生物多样性代表性的3个指标:物种丰富度指数、物种均匀度指数和生态多样性指数,统计分析北京市城8区在五环内的园林植物多样性特点,之后应用GIS空间分析模型,将相应数值采用空间差值计算,并和研究区域的地图叠加,将园林植物多样性指数在城市空间上实现了图形化显示。其结果对于城市园林植物多样性评价以及城市绿地系统涉及生物多样性保护规划的工作都具有现实意义。

Graphical Realization of Urban Green Space Plant Diversity

The study took the random samples of 464 various types of green space in the original eight districts of Beijing to make the landscape plant survey, the three representative indicators of biodiversity, namely the species abundance index, specie homogeneous degree index, and biodiversity index, were calculated, and the characteristics of landscape plant diversity within the Fifth Ring Road were statistically analyzed. With the application of the GIS spatial analysis model, the corresponding numerical values were put into differential calculation and overlaid with the studied area map, which makes the landscape plant diversity index into a graphical display in urban space. The result is of practical significance for urban landscape plant diversity evaluation and biodiversity protection planning in urban space system.