71 Comprehensive Illustration to Overseas and Domestics Ecological Environment Evaluation

Ecological environment evaluation is an indispensible premise for environmental protection, achievement of scientific development outlook, and economic sustainable development. In recent years study on the evaluation of ecological environment has been more and more in depth. Many evaluation methods are proposed, and many evaluation models and indicator systems are established. Evaluation researches can be applied to realistic regions or cities, and quantitative results can be given. Some new methods, new concepts and new trains of thought are put forward, and the scope of research is enlarged. But at present studies especially in the domestic are still facing some problems: theories and practices are isolated; the channel of thought is still narrow; consideration to factors influencing environment is not comprehensive; studies from angles such as economics, management and social science are insufficient.