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首页> 外文期刊>African Journal of Ecology >A quantitative study of the grass and woody layers of a Mopane (Colophospermum mopane) savannah in the mid-Zambezi Valley, Zimbabwe
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A quantitative study of the grass and woody layers of a Mopane (Colophospermum mopane) savannah in the mid-Zambezi Valley, Zimbabwe

机译：津巴布韦赞比西河谷中部的Mopane（Colophospermum mopane）大草原的草层和木质层的定量研究

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摘要

Mopane savannah is one of the predominant dry vegetations of southern Africa. Despite the extensive number of previous studies, there are few quantitative descriptions of the vegetation types where Mopane Colophospermum mopane occurs as a dominant or constituent species. Most of the floristic typologies were restricted to the woody vegetation; hence, there is a lack of both floristic and quantitative descriptions of the grass layer. Here, we present a detailed quantitative description of both the woody and the grass layers of a Mopane savannah of the mid-Zambezi Valley, Zimbabwe. Our floristic classification based on both woody and grass species consistently distinguishes four distinct vegetation types within a mosaic of woodland and shrubland. Results indicate the presence of a rich flora, with greater species diversity than previously reported. Surprisingly, our quantitative analysis reveals that some vegetation types traditionally associated with Mopane savannah are not dominated by C.?mopane, but rather by Combretaceae species, such as Terminalia or Combretum spp. The comparison of the floristic and physiognomic characteristics between the Mopane-associated vegetation types we described in the Zambezi Valley and other sites in the southern and eastern range of the Mopane vegetation confirms the high floristic heterogeneity of the Mopane savannah.
机译：Mopane稀树草原是南部非洲主要的干旱植被之一。尽管先前的研究工作广泛，但很少有关于植被类型的定量描述，其中以Mopane Colophospermum mopane作为优势或组成物种而存在。大多数的植物种类仅限于木质植被。因此，缺乏草层的植物学和定量描述。在这里，我们对津巴布韦中部赞比西河谷的Mopane稀树草原的木质层和草层进行了详细的定量描述。我们基于木本和草木的植物分类一贯区分出林地和灌木丛中的四种不同的植被类型。结果表明存在丰富的菌群，物种多样性比以前报道的更大。出乎意料的是，我们的定量分析表明，某些传统上与Mopane savannah有关的植被类型不是由C.?panan所主导，而是由Combretaceae物种（如Terminalia或Combretum spp）主导。我们在赞比西河谷描述的与Mopane相关的植被类型与南部和东部Mopane植被范围内的其他地点之间的植物区系和相貌特征的比较证实了Mopane稀树草原的高度植物异质性。

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