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准噶尔盆地西南缘艾比湖桦种群年龄结构及动态/Age structure and dynamics of Ebinur Lake birch population along the southwest margin of Zhunger Basin[J]
Authors
中国科学院新疆生态与地理研究所,乌鲁木齐,830011
中国科学院新疆生态与地理研究所,乌鲁木齐830011
+9 more
于洋
于瑞德
北京林业大学自然保护区学院,北京,100083
新疆师范大学,乌鲁木齐,830054
新疆师范大学,乌鲁木齐830054
王青青
艾比湖湿地国家自然保护区,博乐,833400
陆亦农
高翔
Publication date
1 January 2014
Publisher
Abstract
在准噶尔盆地西南缘桦树林内设置63个样方,通过样地调查和数据统计,编绘艾比湖桦种群的年龄结构、静态生命表,存活曲线等参数,运用种群动态量化及时间序列预测分析种群数量动态.结果表明:研究区艾比湖桦种群年龄结构幼龄级、老龄级植株少,中龄级植株较多,种群结构呈纺锤型,种群呈衰退的趋势.艾比湖桦种群死亡率曲线与消失率曲线的变化基本一致,均为种群生长后期大于生长前期,存活曲线接近Deevey-Ⅰ型.量化分析与时间序列预测分析表明,中龄级数量多,导致整体种群动态指数为0.04,但未来中龄级无后备资源补充,老龄级数量呈现增加趋势,为衰退种群.适当的人工辅助恢复和现有植株、生境的保护是维持艾比湖桦种群恢复和种群自然更新的关键
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Last time updated on 29/11/2016