[1]Clay GR,Smid R K.Assessing the validity and reliability of descriptor variables used in scenic highway analysis[J].Landscape and Urban Planning,2004,66.
[2]Meitner M J.Scenic beauty of river views in the Grand Canyon:relating perceptualjudgments to locations[J].Landscape and Urban Planning,2004,68.
[3]王云,崔鹏,江玉林,等.公路景观类型美感度差异及其原因初步分析[J].中外公路,2006,(1).
[4]Flexibility in Highway Design.FHWA,1997.