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USING A CELLULAR-AUTOMATA MODEL TO INVESTIGATE THE EFFECTS OF GRAZING ON PLATEAU PIKA POPULATION DYNAMICS
Liu, Hanwu1; Zhou, Li2; Liu, Wei2; Zhou, Huakun2
2011-09-01
发表期刊INTERNATIONAL JOURNAL OF BIOMATHEMATICS
ISSN1793-5245
卷号4期号:3页码:275-287
文章类型Article
摘要The plateau pika is a keystone species of Qinghai-Tibet plateau, but its overabundance aggravates the degradation of alpine meadow. Grazing is the most convenient manner to utilize alpine meadow. Grazing would change vegetation condition, that is, change the habitat of plateau pika and so lead to variation of plateau pika population. Based on ecological characteristics of plateau pika and alpine meadow, a cellular-automata model is established to investigate the influence of grazing on dynamics of plateau pika population. Vegetation shortens with the increase of grazing intensity. When grazing intensity is light, the height of vegetation under summer grazing, continuous grazing, rotational grazing and winter grazing decrease in turn. The ACC (average carrying capacity of plateau pika) is higher on degraded meadow and is lower on undegraded meadow. On undegraded meadow grazing affects the value of ACC, whereas, on degraded meadow grazing has slight effect on it. On undegraded meadow, plateau pika occupies all cells speedly, the amount of damaged cells and the average amount of live holes in occupied cells decrease or hold the line on temporal dimension. On degraded meadow, the dispersal of plateau pika is restrained, the amount of damaged cells and the average amount of live holes in occupied cells increase on temporal dimension.; The plateau pika is a keystone species of Qinghai-Tibet plateau, but its overabundance aggravates the degradation of alpine meadow. Grazing is the most convenient manner to utilize alpine meadow. Grazing would change vegetation condition, that is, change the habitat of plateau pika and so lead to variation of plateau pika population. Based on ecological characteristics of plateau pika and alpine meadow, a cellular-automata model is established to investigate the influence of grazing on dynamics of plateau pika population. Vegetation shortens with the increase of grazing intensity. When grazing intensity is light, the height of vegetation under summer grazing, continuous grazing, rotational grazing and winter grazing decrease in turn. The ACC (average carrying capacity of plateau pika) is higher on degraded meadow and is lower on undegraded meadow. On undegraded meadow grazing affects the value of ACC, whereas, on degraded meadow grazing has slight effect on it. On undegraded meadow, plateau pika occupies all cells speedly, the amount of damaged cells and the average amount of live holes in occupied cells decrease or hold the line on temporal dimension. On degraded meadow, the dispersal of plateau pika is restrained, the amount of damaged cells and the average amount of live holes in occupied cells increase on temporal dimension.
关键词Cellular-automata Model Grazing Plateau Pika Alpine Meadow
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]OCHOTONA-CURZONIAE ; BIODIVERSITY ; PLANTS
收录类别SCI
语种英语
WOS研究方向Mathematical & Computational Biology
WOS类目Mathematical & Computational Biology
WOS记录号WOS:000295410000002
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/1510
专题中国科学院西北高原生物研究所
作者单位1.Yuncheng Univ, Dept Appl Math, Yuncheng 044000, Shanxi, Peoples R China
2.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Peoples R China
推荐引用方式
GB/T 7714
Liu, Hanwu,Zhou, Li,Liu, Wei,et al. USING A CELLULAR-AUTOMATA MODEL TO INVESTIGATE THE EFFECTS OF GRAZING ON PLATEAU PIKA POPULATION DYNAMICS[J]. INTERNATIONAL JOURNAL OF BIOMATHEMATICS,2011,4(3):275-287.
APA Liu, Hanwu,Zhou, Li,Liu, Wei,&Zhou, Huakun.(2011).USING A CELLULAR-AUTOMATA MODEL TO INVESTIGATE THE EFFECTS OF GRAZING ON PLATEAU PIKA POPULATION DYNAMICS.INTERNATIONAL JOURNAL OF BIOMATHEMATICS,4(3),275-287.
MLA Liu, Hanwu,et al."USING A CELLULAR-AUTOMATA MODEL TO INVESTIGATE THE EFFECTS OF GRAZING ON PLATEAU PIKA POPULATION DYNAMICS".INTERNATIONAL JOURNAL OF BIOMATHEMATICS 4.3(2011):275-287.
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