2Miles K A,Hayball M,Dixon A K.Colour perfusion imaging:a new application of computed tomograghy[J].Lan-cet,1991,337(8742):643-645.
3Hartje V, Klaphake A, Schliep R. 2003. The internation debate on the ecosystem approach-critical review international actors obstacles and challenges. Bonn (Federal Agency for Nature Conservation).BfN-Skripten. 80.
5Korn H, Jutta S, Edward M, eds. 1999. Report of the Scientific Workshop ''The Ecosystem Approach-What does it Mean for European Ecosystems?'' at the International Academy for Nature Conservation Isle of Vilm, Germany, November 26/27, 1998. Bonn (Federal A
6Korn HR, eds. 2003. Report of the International Workshop on the ''Further Development of the Ecosystem Approach'' at the International Academy for Nature Conservation Isle of Vilm, Germany, October 9-11,2002-including a compilation of case-studies and les
