7Brabec E,Smith C Agricultural land Fragmentation:The Spatial Effects of Three Land Protection Strategies in the Eastern United States[J].Landscape and Urban Planning.2002.58:255-268.
8Arthur W K,A New Institutionalist Examination of Colorado's Communisty-Based Land Trusts[D].University of Colorado.2002:1-7.
9Ando A W, Albers H J. State-level Variation in Land-Trust Abundance: Could it Make Economic Sense?[J]. Resources for the Future. Oct 2001. 1-36.
10Gustanski J A. The ethics-economics-policy Paradigm: The Foundation for an Integrated Land Trust Conservation Decision-support Model[J]. Urban Ecosystems, 1999(3): 83-111.