Comprehensive Evaluation of River Ecosystem Based on Cloud Theory
Zhang Ze-zhon · 2014
In order to solve the fuzzy and stochastic problems in river ecosystem comprehensive evaluation,a cloud evaluation model based on cloud theory is proposed. The cloud evaluation model that can not only show the fuzzy feature of grade by membership function,but also indicate random attribute of the degree by hyper entropy is in line with evaluation reality. Taking the North Canal which is controlled by sluice and dam as an example,the results show that the North Canal ecosystem that is impacted badly is sub-health and need environmental renovation by engineering and non-engineering measures. The cloud evaluation model is compared with other traditional evaluation methods. The comparison shows that the cloud evaluation model is simple,reliable and can be used in various assessment problems.