Spatial visibility of green areas of urban greenway using the green appearance percentage
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摘要: 为了解城市绿道植物空间绿量可视性特征,通过构建绿视率计量方法,以广东省立绿道1号线为例进行调查分析,探索了基于绿视率的城市绿道空间绿量可视性特征。结果表明:①省立绿道1号线沿线4个区域总的绿视率均值为31.06%,其中天河区(38.19%)>海珠区(35.97%)>越秀区(26.76%)>荔湾区(26.67%)。②天河区绿道与荔湾区、越秀区绿道绿视率存在显著差异(P<0.05),表明天河区绿道空间绿量可视性优于荔湾区和越秀区;虽然海珠区绿道绿视率较荔湾区和越秀区高,但通过方差分析多重比较来看,3个区的绿道绿视率没无显著差异(P>0.05),表明荔湾区、越秀区、海珠区绿道的空间绿量可视性较相似。③越秀区和天河区绿道绿视率较为集中地分布在24%~40%区间,说明越秀区和天河区各自区域绿道内部的绿视率数值较为稳定,其空间绿量可视性效果差异不大,给人感觉一种持续、稳定的绿色空间;而荔湾区和海珠区绿道绿视率的分散在10%~50%,说明荔湾区和海珠区各自区域绿道内部的绿视率数值不稳定,其空间绿量可视性效果差异较大,给人一种间断、具有冲击力的绿色空间。基于绿视率的空间绿量可视性可用于评价城市森林建设的视觉效果。图4表4参21Abstract: To understand the spatial visibility of green areas of urban greenway in urban greenway, the green-appearance percent was used to determine and analyze green areas of greenway line 1. Through the photos took by Nikon D800, the green-appearance percent was calculated with Photoshop. Results indicated that 1) the average total green-appearance percent of greenway of four Guangzhou Districts was 31.9% with Tianhe (38.2%) > Yuexiu (36.0%) > Haizhu (26.8%) > Liwan (26.7%). 2) Using one-way ANOVA, the green-appearance percent of greenway in Tianhe District was significantly greater (P < 0.05) than Yuexiu and Liwan Districts. 3) The green-appearance percent of greenway in Yuexiu and Tianhe Districts was between 24.0% and 40.0%; Whereas, in Liwan and Haizhu Districts green areas were 10.0% to 50.0%. Thus, Yuexiu and Tianhe Districts were relatively stable providing a sustained, stable green space; but Liwan and Haizhu Districts were unstable with a discontinuous, sporadic green space. The green-appearance percent cloud be used to ecaluate the visual impact of various planning and management on urban forests.[Ch, 4 fig. 4 tab. 21 ref.]
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Key words:
- landscape architecture /
- greenway /
- green area /
- vegetative landscape /
- green appearance percent /
- spatial visibility
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2016.02.014
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