文章依据风险系统理论，构建区域环境风险区划的层次结构模型与指标体系，提出区域环境风险综合指数由风险源危险性指数、控制机制有效性指数、受体易损性指数组成。
It was proposed that comprehensive index of regional environmental risk consists of the danger index of risk source, validity index of control mechanism and vulnerability index of risk receptor.
通过李亚普诺夫稳定理论证明跟踪误差是指数收敛的，仿真结果验证了这种方法的有效性。
It is showed by the Lyapunov stability theorem that the tracking errors converge exponentially. The simulation results illustrate the efficiency of this method.
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