7SHUTTLEWORTH S. The Use of Photographs as an Environmental Presentation Medium in Landscape Studies [J]. Environ Manage , 1980, 11:61-7.
8JACKSON R H. Assessment of the Environmental Impact of High Voltage Power Transmission lines [J]. Environ Manage. , 1978, 6:153 - 170.
9DANIEL T C, BOSTER R S. Measuring Landscape Esthetics: The Scenic Beauty Estimation Method[Z]. Rocky Mountain Forest and Range Experiment station Research Paper, Colorado, 1976.