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首页> 外文期刊>Plant Ecology and Evolution >The indicators of the post-cultural dynamics in fallow vegetation in the savannahs of the Kigwena natural forest reserve (Burundi)Original Title (non-English) Les indicateurs de la dynamique post-culturale de la vegetation des jacheres dans la partie savane de la reserve naturelle forestiere de Kigwena (Burundi) [French]
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The indicators of the post-cultural dynamics in fallow vegetation in the savannahs of the Kigwena natural forest reserve (Burundi)Original Title (non-English) Les indicateurs de la dynamique post-culturale de la vegetation des jacheres dans la partie savane de la reserve naturelle forestiere de Kigwena (Burundi) [French]

机译：吉格纳自然保护区（布隆迪）大草原的休耕植被的文化后动态指标原始标题（非英语）该自然保护区的稀树草原的休闲植被的文化后动态指标基吉瓦纳（布隆迪）自然森林酒店[法文]

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Background and aims A synchronic study has been achieved in fallows distributed in three age classes (0-2 years, 3-5 years and more than five years) in the natural forest reserve of Kigwena (Burundi). The aim was to show that differences in the proportion of plant functional groups could be used as indicators in characterizing the post-cultivation succession stages.Methods The retained functional groups concerned biological and phytogeographic types, leaf size and diaspores dispersion.Key results The data analysis gave five floristic associations. The functional group analysis evidences that the young successional stages are often characterized by sclerochorous herbaceous (therophyts) with often anemochorous dispersion, while the aged stages are essentially dominated by sarcochorous phanerophyts with essentially autochorous dispersion. The proportion of species with large distribution decreases with the age of the fallow contrary to species with regional distribution. A progressive increase with the age of species number with large leaves and a reduction of species with small leaves has been observed.Conclusion The follow-up of the temporal variability of biological traits of species permits to characterize stages of post-cultivation succession.
机译：背景和目的在基格韦纳（布隆迪）的天然林保护区中，以三个年龄段（0-2岁，3-5岁和五年以上）分布的休耕期进行了同步研究。目的是表明植物功能基团比例的差异可以用作表征栽培后演替阶段的指标。方法保留的功能基团涉及生物学和植物地理学类型，叶片大小和孢子散布。主要结果数据分析给出了五个植物区系。官能团分析表明，年轻的演替阶段通常以硬毛的草本（附生植物）为特征，经常散布有绒毛，而衰老的阶段则主要以肉食性的自生植物为主，散布着基本上是自发的。与休闲地的年龄相反，大面积分布的物种的比例下降，而区域性分布的物种则相反。随着叶片数量的增加，随着年龄的增长，叶片数量逐渐减少。随着叶片数量的减少，叶片数量的减少。结论随物种生物学特性的时间变化，其特征在于可以确定栽培后演替的各个阶段。

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