矿区生态系统脆弱性的对象函数Petri网评价模型

doi:10.16182/j.issn1004731x.joss.201805008

摘要/Abstract

摘要： 在传统对象Petri网中引入函数的概念,定义了一种全新的生态系统脆弱性评价模型OFPNEM（Object Function Petri Net Model）,将对生态系统恶化过程中起促进与抑制作用的两方面因素进行综合考虑与分析。用变迁表示脆弱程度的触发条件,用对象库所表示生态系统变化过程中所处的状态,从而直观地表示生态环境恶化的逻辑因果关系,提出了一种基于对象函数Petri网的矿区生态系统脆弱性评价模型OFPNEM。在对象函数Petri网基础上,结合模型原理的规则,给出OFPNEM算法,并通过实验验证了算法的正确性。通过对象函数Petri网对具有动态变化过程的矿区生态系统脆弱性评价,更加贴近实际情况。

关键词: 对象函数, Petri网, 脆弱性评价建模, 动态变化过程

Abstract: Introducing the concept of function into traditional object Petri net, a new evaluation model of ecosystem vulnerability named object-function Petri net model (OFPNEM) was put forward. The facilitating and suppressing factors of the ecosystem degradation were analyzed in this evaluation model. Trigger conditions of vulnerability were depicted as transitions and the state of ecosystem in the process of change were depicted as object places. Logical causality of environmental degradation could be represented directly. Furthermore, evaluation model on the vulnerability of mining area ecosystem based on object-function Petri net was proposed. Through object-function Petri net, combining the rules of model, a reasoning algorithm was posed. The effectiveness of the algorithm was verified by experiment. Dynamic changes in the process of ecosystem degradation were taken into evaluation so that a closer ecosystem description to reality could be made.

Key words: object-function, Petri net, vulnerability evaluation modeling, dynamic changes

中图分类号:

X826

苏佳, 黄光球. 矿区生态系统脆弱性的对象函数Petri网评价模型[J]. 系统仿真学报, 2018, 30(5): 1681-1689.

Su Jia, Huang Guangqiu. Evaluation Model on the Vulnerability of Mining Area Ecosystem Based on Object-function Petri Net[J]. Journal of System Simulation, 2018, 30(5): 1681-1689.

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