六盘水师范学院学报2024，Vol.36Issue(3)：38-44,7.DOI:10.16595/j.1671-055X.2024.03.005
破碎化生境下竞争食物网中侵占率迁移率对种群的影响
The Impact of Invasion Rate and Migration Rate on Population in Competitive Food Webs under Habitat Fragmentation
摘要
Abstract
The destruction of landscape habitats can lead to habitat loss and fragmentation.There is competition among spe-cies of the same trophic level in nature,and the invasion and migration rates among different species vary.Therefore,it is of practi-cal significance to study the response mechanism of food webs of competing species with the same nutritional level to invasion and migration rates based on fragmented landscapes.This article establishes a four species collective population model and uses MAT-LAB software to numerically simulate the survival dynamics of the population,studying the effects of invasion and migration rates in fragmented habitats.The results indicate that under fragmented landscapes,the invasion rate of competing species can have an impact on the coexistence results and area of species.The migration rate of two competing species can affect the coexistence area of four species.There are minimum threshold and maximum threshold for the migration rate of species 2.When the migration rate is below the minimum threshold or above the maximum threshold,the coexistence area of four species is zero.The coexistence ar-ea shows an overall upward trend with the increase of species 3 migration rate.The fusion effect of invasion and migration rates be-tween different species can offset or even reverse competitive advantages,leading to the extinction of species 2 and the survival of species 3.The research provides a reference for utilizing the coexistence of species invasion and migration effects,and a theoreti-cal basis for explaining some ecological phenomena and protecting rare species.关键词
破碎化生境/侵占率/迁移率/共存区域/稳健性Key words
Habitat fragmentation/Invasion rate/Migration rate/Coexisting areas/Robustness分类
生物科学引用本文复制引用
张荣,岳芹,周帅..破碎化生境下竞争食物网中侵占率迁移率对种群的影响[J].六盘水师范学院学报,2024,36(3):38-44,7.基金项目
安徽高校自然科学研究重点项目"生境破碎化下物种扩散方式与迁移率对食物网中物种共存的影响"(2023AH052740) （2023AH052740）
皖西学院校级重点项目"安徽省新型城镇化质量与城市创新能力耦合协调性研究"(WXSK202266). （WXSK202266）
