高速公路生态景观质量评价指标体系和评价方法:以江苏南通为例

公路生态景观建设不仅是公路建设的重要组成部分,也是美丽乡村建设和生态园林城市建设的重要标志,对于实现社会经济的可持续发展具有重要作用.公路生态景观质量的评价指标和方法是衡量公路及其外部环境建设质量的重要依据.本研究以江苏省南通市5条主要干线高速公路G15、G228、G204、S334和S335为例,建立了定量和定性评价指标相结合的公路生态景观质量评价指标体系,包括景观功能、生态效能和安全设计3大类12个评价指标.通过现场调查和计算,建立了12个评价指标的变量矩阵,并进行了主成分(PC)分析.结果表明: 公路绿化景观生态评价综合得分模型为: H=0.694PC1+0.191PC2+0.115PC3, 5条高速公路得分排序结果为: G204>G15>S334>G228>S335.本研究结果将为高速公路生态景观质量评价提供方法和参考.

Index system and method for the evaluation of highway ecological landscape quality: A case study of Nantong City,Jiangsu Province,China

The construction of highway ecological landscape is an important part of highway entity and an iconic feature of scenic countryside and ecological garden city, which plays an important role in the process of achieving social and economic sustainable development. The efficient index system and method is a basic measurement for the assessment of the interior quality and its associated outer environment. By taking five arterial highways (G15, G228, G204, S334 and S335) in the territory of Nantong City, Jiangsu Province as the case, an evaluation system containing quantitative and qualitative indices was developed to deal with the ecological landscape quality. The system composed of 12 evaluation indices which were divided into three categories including ornamental value, ecological efficiency, and safety design. Based on the survey and calculation of the raw data, the variable matrix was established and analyzed with principal component (PC) analysis. The results showed that the equation of highway greening ecological evaluation score was H=0.694×PC1+0.191×PC2+0.115×PC3, and scores of 5 highways ranked in the ordination of G204 > G15 > S334 > G228 > S335. The results would provide methods and references for efficient evaluation of highway landscape.