1995 Volume 3 Pages 131-136
The concept of sustainable development is accepted in the world. We have many ecological or environmental friendly city plans. But we are facing a difficulty when we make sure that ecological city is sustainable or not. It is the most urgent that the valuation system of sustainablity is embodied. This caper proposed the humanenvironmental integrated thinking model, which is based on life economy, and cleared the problems for designing the sustainablity check system by applying ecological accounting and environmental audit. It is more important to develop new indexes that estimate human responsibility for eco-system or nature rather than to change ecological value into commercial value.