Abstract: Based on the analysis, investigation and Delphi's determination, seven factors of population density of land, population loading per unit cultivated land area, residential and industrial using land area, industrial economic density of land, land area with slop of more than25 degrees, land area per unit growing stock of forest and area of no ensuring stable yields through drought/flood are chosen. Using three methods of weight value accumulation, cluster analysis and fuzzy comprehensive estimation, the ecological environments in six cities of Hangzhou Bay are analyzed and evaluated comprehensively. Results can be applied in practice of territory programming. This test has reference significance to probe into the theory and method of land ecological evaluation.

Key words: Land ecological environment, Cluster analysis, Fuzzy comprehensive estimate, Territory programming