[1]陈玲玲,林振山.非Allee与Allee竞争种群系统的动力学研究[J].南京师大学报(自然科学版),2008,31(02):124-129.
　Chen Lingling,Lin Zhenshan.Dynamic Study on the Non-Allee and Allee System of Two-competitive Species[J].Journal of Nanjing Normal University(Natural Science Edition),2008,31(02):124-129.
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非Allee与Allee竞争种群系统的动力学研究()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第31卷
期数:
2008年02期
页码:
124-129
栏目:
地理学
出版日期:
2008-06-30

文章信息/Info

Title:
Dynamic Study on the Non-Allee and Allee System of Two-competitive Species
作者:
陈玲玲;林振山;
南京师范大学地理科学学院, 江苏省环境演变与生态建设重点实验室, 江苏南京210046
Author(s):
Chen Lingling; Lin Zhenshan
School of Geographic Sciences,Nanjing Normal University,Jiangsu Key Laboratory of Environmental Change and Ecological Construction,Nanjing 210046,China
关键词:
Allee效应;  2-竞争种群;  平衡态;  竞争共存;  竞争排斥
Keywords:
A llee effect;  two competitive spec ies;  equ ilibrium;  com petitive coex istence;  competitiv e exc lusion
分类号:
Q14
摘要:
将A llee效应引入2- 竞争种群系统, 建立了具有A llee效应的2- 竞争种群演化动态模型, 对非A llee 与A llee竞争种群系统演化进行动力学研究. 模拟结果表明: ①A llee效应导致两竞争种群系统具有多个平衡态.②A llee效应使竞争共存物种无法续存甚至全部灭绝, 最终平衡态值随初始斑块占有率变化而变化. ③A llee效应可能使竞争排斥物种共同灭绝, 且效应越强, 物种存活时间越短; 但A llee效应不会增强强物种的竞争优势, 反而可能使强物种变弱, 弱物种变强, 其具有与栖息地破坏类似的影响种群竞争等级排序的作用. ④A llee 效应对种群续存是极不稳定的干扰因素, 微小的变化都将引起系统平衡态的剧变. 然而较高的初始斑块占有率也可能使原本濒于灭绝或竞争排斥的物种继续存活.
Abstract:
A llee e ffect is introduced in to the tw o-com pe titive species system to establish a tw o-species dynam ic model subject to theA llee effect, and the non-A llee and A llee system of tw o-com pe titive spec ies are indiv idually sim ulated. Num er ica l sim ulation results show tha t: ( 1) TheA llee effect cou ld lead tom ultiple stable sta tes in the two- spec ies competitive sy stem. ( 2) It causes the coex istence impossible and ev en ex tinction of both spec ies. U ltim ate equilib rium w ill be changed w ith in itia l patch occupancies. ( 3) W ith competitiv e exc lusion, theA llee e ffect cou ld cause all spec ies to go ex tinction. The stronger the A llee effect is, the shorter the spec ies’ surv iva l per iod wou ld be. It degrades the super ior spec ies to be infe rio r and upg rades the in ferior superior, sim ilar in hab itat destruction a ffecting the spec ies eco log ical order. ( 4) As a destab ilizing factor in stab ility and in spec ies persistence in the evo lvement, it w ill significantly affect the equ ilibr ium even if it is slightly changed. M oreove r, h igh in itia l patch occupanc ies m ay he lp persistence o f those go ing ex tinction, wh ich dem onstra tes A llee effec tm ust be fu lly considered in the process of ra re anim a ls pro tection.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家自然科学基金( 40371108) , 国家十五"211"工程重大课题资助项目.
通讯联系人: 林振山, 教授, 博士生导师, 研究方向: 气候-环境-地理领域. E-m ail:linzhenshan@ n jnu. edu. cn
更新日期/Last Update: 2013-05-05