| 濒危植物膜荚黄芪种群生活史分析 |
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| 引用本文： | 刘建泉,杨建红,朱高.濒危植物膜荚黄芪种群生活史分析[J].草业科学,2011,28(2):180-184. |
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| 作者姓名： | 刘建泉 杨建红 朱高 |
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| 作者单位： | 甘肃祁连山国家级自然保护区管理局,甘肃,张掖,734000;甘肃省张掖市甘州区林业技术中心推广站,甘肃,张掖,734000;甘肃省肃南裕固族自治县林业种苗站,甘肃,肃南,734400 |
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| 基金项目： | 国家科技支撑计划项目(2007BAC03A02-06-01) |
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| 摘 要： | 膜荚黄芪(Astragalus membranaceus)属国家保护植物.采用种群结构、生命表和生存函数分析方法,分析了祁连山中部西水林区膜荚黄芪种群的生活史.结果表明,膜荚黄芪种群属衰退种群,Ⅰ级个体数量不足,种群的存活曲线符合DeeveyⅡ型曲线;存活曲线、死亡率曲线和消失串曲线从整体上反映了膜荚黄芪种群数量的动态...
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| 关 键 词： | 濒危植物 膜荚黄芪 生活史 生命表 |
Life histories of endangered Astragalus membranaceus population |
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| LIU Jian-quan,YANG Jian-hong,ZHU Gao.Life histories of endangered Astragalus membranaceus population[J].Pratacultural Science,2011,28(2):180-184. |
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| Authors: | LIU Jian-quan YANG Jian-hong ZHU Gao |
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| Institution: | LIU Jian-quan1,YANG Jian-hong2,ZHU Gao3(1.Administration of Qilianshan National Nature Conservation,Gansu Zhangye 734000,China,2.Ganzhou District Popularization Station of Forest Technology of Zhangye City,3.Management Station of Forestry and Seedling of Sunan Yugu Autonomous County,Gansu Sunan 734400,China) |
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| Abstract: | Astragalus membranaceus is one of the endangered species in China.Analytical methods of the population structure, life table, survival functions are used to study life histories of A.membranaceus population in Xishui forest area of middle Qilian Mountains.The study showed that the population was declining gradually and individual plants of class I were not enough; the survival curve of the population appeared to be a type of Deevey Ⅱ; curves of survivorship, mortality rate, killing value reflected the whole population trends of dynamic changes; and functions of survival rate, cumulative mortality rate, mortality density and hazard reflected dynamic and structure of A.membranaceus population.Grazing and digging medicinal materials are main factors in imminent danger of the population. |
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| Keywords: | endangered plant Astragalus membranaceus life history life table |
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