干旱和半干旱地区植被-水系统有限时间的稳定性
摘要:
自然因素、人为因素以及地表水的渗透能够改变干旱和半干旱地区生态平衡,为了反映随机环境噪声对干旱半干旱地区生态系统的影响,建立了由Markov链和高斯白噪声驱动的随机时滞植被-水系统,通过随机比较原理,研究了植被及水的有限时间的动力学行为,给出了系统有限时间稳定性和有限时间收缩稳定性的充分条件。
The ecological balance in arid and semi-arid areas is seriously damaged by natural, human factors and the infitration of suriace water, in order to study the infuence of random environmental noise on the ecosystem in arid and seml-arid areas, a stochastic time-delay vegetation-water system driven by Markov chain and Gaussian white noise is established in this paper, The finite-time dynamic behaviors of vegetation and water are studied by stochastic comparison principle, and the suficient conditions for finite-time stability and finite-time contraction stability of the system are given.
作者:
胡静,朱磊,张启敏,任杰,吴涵
Hu Jing,Zhu Lei,Zhang Qimin,Ren Jie,Wu Han
机构地区:
宁夏大学土木与水利工程学院;宁夏大学数学统计学院;宁夏大学宁夏数学基础学科研究中心;宁夏医科大学医学信息与工程学院;可口可乐(饮料)上海有限公司
引用本文:
胡静,朱磊,张启敏等。干旱和半干旱地区植被-水系统有限时间的稳定性[J].学报(自然科学版),2025,53(3) :72-78. (Hu Jing,Zhu Lei,Zhang Qimin,et al.Finite-time stability of vegetation-water system in arid and semi-arid regions[J] . Journal of Henan Normal University(Natural Science Edition) , 2025, 53(3) : 72-78. DOI:10. 16366/j. cnki.1000-2367. 2023. 10. 18. 0002. )
基金:
宁夏回族自治区全职引进高层次人才科研启动项目;宁夏自然科学基金
关键词:
渗透时滞;有限时间稳定;植被-水系统
dominance relationship; Pythagorean fuzzy set; multi-granularity rough set; fuzzy entropy; closeness degree
分类号:
O29