【摘要】 以往的景观评价方法多为定性评价,主观性太强,且对景观的评价比较片面,不能反应公路景观的整体安全水平。本文将改进的物元可拓评价法应用于公路景观评价中,建立公路景观评价的物元分析模型,分别从公路景观的敏感性、景观阈值、景观价值及其环境质量4个方面,选用视距、地形、景观色彩、气候、生物多样性等27项指标作为物元分析模型的评价因子,以张花高速公路实测数据为例进行评价,得出公路景观所属等级。研究结果表明,改进的物元可拓评价法克服了传统物元可拓评价在实测数据超出节域时无法计算的局限性,客观性强,评价精度高,是公路景观评价的一种有效方法,在今后的公路景观评价中具有良好的应用前景。更多还原

【Abstract】 Landscape evaluation used to be mostly of qualitative and even subjective nature.An assessment of the landscape can not usualy reflect the overall safety level of a highway landscape.An improved matter element extension evaluation method is proposed.Based on the principle of matter element extension evaluation,a matter element analysis model is established,including twenty seven indexes to cover various aspects of the road landscape evaluation.The indexes,such as sight distance,topography,landscape color,climate,diversity of organisms,are selected from four areas: the sensitivity of highway landscape,landscape threshold,landscape value,environmental quality.The grade of the road landscape is determined through evaluating a large set of expansive data from Zhanghua Highway.The results show that the improved matter element extension evaluation method enjoys excellent objectivity and high evaluation accuracy without the limitation that the calculation cannot be proceeded when the measured data go beyond the controlled field,and it is an effective method of the road landscape evaluation with good application prospect.更多还原