Environmental asset value of water resources in lake calculated in applying fuzzy mathematical method

As one of environmental asset, the value of water resources in lake need to be calculated with the development of environmental accounting and the importance of macro-management. Because there are too many uncertain factors that can affect water resource´s value, it is better to adopt the method of fuzzy mathematics to evaluate. The paper based on the built Fuzzy Mathematical Method and the real conditions of the Yun Long Lake, the author of the present paper, taking water quality, water resource quantity, GDP, and population density as element of criterion, made a calculation of the value of water resources, and points out that the value of the water resources in Yun Long Lake is 1.868 yuan /m3. This research try to offer data for the macro-management about water resources in lake to carry out water resources sustainable utilization, and try to make some contribution to the development of china environmental accounting.