4Ann L. Riley. Restoring Streams in Cities [ M ]. Washington. D. C. Island Press, 1998.
5Grabmn, H. H. N. Material Symbols in Japanese Domestic Tourism. In DW Ingersoll, G Bronitsky. (Ed) Mirror and Metaphor:Material and Social Constructions of Reality. Lanham, Md. : University Press of America, 1987.
6Jane Grenville. Managing the Historic Rural Landscape [ M ]. New- York: Routledge, 1999.
2Nelson P R C ,Taylor P A, MacGregor J F. Missing data meth- ods in PCA and PLS:score calculations with incomplete obser- vations[ J ]. Chemometrics and Intelligent Laboratory Systems, 1996,35( 1 ) :45-65.
3Muteki K, MacGregor J F, Ueda T. Estimation of missing data using latent variable methods with auxiliary information [ J ]. Chemometrics and Intelligent Laboratory Systems,2004,781: 41-50.