7Brush R O. The attractiveness of woodlands:Perceptions of forest landowners in Massachusetts[J]. Forest Science,1979,25 :495-506.
8Shuttleworth S. The use of photographs as an environment perception medium in land.'w.ape studies[J]. Environ Mgmt,1980,11:61-76.
9Jackson R II, Hudman L E. Assessment of the,environmental impact of high voltage power transmission lines[J]. Journal of Environmental Management, 1978,6 : 153-170.