BIOLOGICAL INVASION PROBLEM WITH FREE BOUNDARY NONLOCAL DIFFUSION EQUATIONOA
In order to better describe the phenomenon of biological invasion,this paper introduces a free boundary model of biological invasion.Firstly,the right free boundary is added to the equation with logistic terms.Secondly,the existence and uniqueness of local solutions are proved by the Sobolev embedding theorem and the comparison principle.Finally,according to the relevant research data and contents of red fire ants,the diffusion area and nest number of red fire ants were simulated without external disturbance.This paper mainly simulates the early diffusion process of red fire ants.In the early diffusion stage,red fire ants grow slowly and then spread over a large area after reaching a certain number.
HE Yu-rong;ZHANG Ya-rong
School of Science,Xi''an University of Architecture and Technology,Xi''an 710055,ChinaSchool of Science,Xi''an University of Architecture and Technology,Xi''an 710055,China Xi''an Special Equipment Inspection Institute,Xi''an 710065,China School of Power and Energy,Northwestern Polytechnical University,Xi''an 710072,China
数学
Free boundarybiological invasiondifferential equation
《数学杂志》 2025 (1)
P.48-56,9
Supported by National Natural Science Foundation of China(12101482)Postdoctoral Science Foundation of China(2022M722604)General Project of Science and Technology of Shaanxi Province(2023-YBSF-372)The Natural Science Foundation of Shaan Xi Province(2023-JCQN-0016)Shannxi Mathmatical Basic Science Research Project(23JSQ042)。
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