| 库姆塔格沙漠典型植物种群年龄结构特征* |
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| 引用本文： | 袁宏波,张锦春,褚建民,唐进年,丁峰,刘淑娟.库姆塔格沙漠典型植物种群年龄结构特征*[J].西北植物学报,2011,31(11):2304-2309. |
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| 作者姓名： | 袁宏波 张锦春 褚建民 唐进年 丁峰 刘淑娟 |
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| 作者单位： | 1. 甘肃省荒漠化与风沙灾害防治重点实验室-省部共建国家重点实验室培育基地,甘肃省治沙研究所,兰州733070
2. 中国林业科学研究院林业研究所,北京,100091 |
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| 基金项目： | 国家科技基础性工作专项(2006FY110800); 甘肃省自然科学基金(0803RJZH087); 国家自然科学基金(40961013) |
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| 摘 要： | 基于实地调查,依据基径和高度分级数据,通过年龄锥和年龄结构拟合函数分析库姆塔格沙漠3个典型种群的年龄结构特征和种群生长状态及发展趋势。结果表明:梭梭种群年龄结构呈反"J"型曲线,目前属于稳定增长型种群,但因其幼苗数量相对较少使其增长受限;沙生柽柳种群年龄结构呈"铃"型曲线,虽然表现出类似稳定型种群特征,但由于幼龄植株数量很小,中龄级的植株数量比例较大,种群存在衰退威胁;胡杨种群年龄结构具有一定的特殊性,呈反转"S"型曲线,中、大龄级植株数量保证了种群能够维持一定的稳定状态,而幼龄级数量较大,使种群具有一定的增长潜力。3个典型种群各自年龄结构特征使其面临着不同程度的生存威胁,必须采取不同的保护措施以维持种群结构的稳定和发展。
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| 关 键 词： | 种群年龄结构 梭梭 沙生柽柳 胡杨 年龄锥 库姆塔格沙漠 |
| 收稿时间： | 2011/7/25 0:00:00 |
| 修稿时间： | 2011/8/22 0:00:00 |
Characteristics of the Populations Age Structureof Three Typical Plantin Kumtag Desert |
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| YUAN Hong-bo,ZHANG Jin-chun,CHU Jian-min,LIU Shu-juan,TANG Jin-nian,DING Feng.Characteristics of the Populations Age Structureof Three Typical Plantin Kumtag Desert[J].Acta Botanica Boreali-Occidentalia Sinica,2011,31(11):2304-2309. |
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| Authors: | YUAN Hong-bo ZHANG Jin-chun CHU Jian-min LIU Shu-juan TANG Jin-nian DING Feng |
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| Institution: | State Key Laboratory of Desertification and Aeolian Sand Disaster Combating & Gansu Desert control Research Institut,Research Institute of Forestry,State Key Laboratory of Desertification and Aeolian Sand Disaster Combating & Gansu Desert control Research Institut,State Key Laboratory of Desertification and Aeolian Sand Disaster Combating & Gansu Desert control Research Institut,State Key Laboratory of Desertification and Aeolian Sand Disaster Combating & Gansu Desert control Research Institut |
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| Abstract: | Based on the spot investigation,taking the height and ground diameter data as the basis,according to the age pyramid and the fitting equation of age structures,the age structure characteristics,growth status and development trend of the three typical plant populations of Kumtage desert were studied.The results showed that the age structure of Haloxylon ammodendron population was inverted J shape curve,and the population is currently in rising stage and is stabile.The growth is limited because of their relat... |
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| Keywords: | Population age structure H ammodendron T taklamakanensis P euphratica Oliv Age pyramid Kumtag desert |
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