The Back-propagation Neural Network For Regional Ecological Security Assessment And Its Application Illustrated With Chaohu Lake Basin

The concept of ecological security was advanced in 1989, ecological security has been an important part, the situation of ecological security begins to the limits to the development of national economics and society. We discuss the meaning and the impact factors.Regional ecological security assessment's objection is regional ecosystem, synthesize the whole situation of society, economic, natural, and grasp the changing rule. We discuss the objection, meaning, rules and the ordinary methods.At present, Back Propagation Neural Network has been applied in ecological and environmental field, but in its application, there are several problems, this limited its application to some extent.This paper discusses some measures in order to solve the problems.This study's centre is the BPNN method for regional ecological security and its application, including: analyze of the regional ecological security's situation; crave up the assessment units and the assessment levels; build the assessment indicator system and decide the assessment standards; build the BPNN model of regional ecological security; analyze the model application's result; and make measures to improve the situation of regional ecological security.