EVALUATION ON ECOLOGICAL SECURITY OF URBAN LAND BASED ON BP NEURAL NETWORK——A CASE STUDY OF GUANGZHOU
选取18个指标构建评价体系，用BP神经网络评估广州市2006-2008年土地生态安全，发现2006和2007年为Ⅲ级、2008年为Ⅳ级，证明该方法有效。
Ecological safety evaluation of urban land provides the basis for promoting urban ecological security.18 indicators were chose to set up the evaluation system.By using BP neural network method,the study followed is trying to evaluate ecological security of urban land.And the result shows that the security level of Guangzhou's in 2006 and 2007 are both Ⅲ,and it's Ⅳ in 2008.Finally,BP neural network is able to achieve the purpose no evaluating the ecological security of urban land.And it takes an important part in exploring a new way for security of urban land as well.