新疆野扁桃群落物种多样性及区系特征分析

Analysis on Species Diversity and Floristic Characteristics AmygdalusledebourianaCommunity in Xinjiang

通过对裕民县和布尔津县野扁桃分布区的物种组成及群落结构调查,分析其植物区系特点及物种多样性特征。结果显示,野扁桃分布区的植物区系组成都以北温带成分占优势,温带属性是野扁桃分布区植物区系的基本特点;两地植物群落以野扁桃为主形成群落,但群落结构组成不同,表明生境和物种适应性间存在差异;两地群落物种多样性在物种丰富度、多样性指数及均匀度等多样性指数上均表现出草本层>灌木层的规律。

The species composition and community structure of the Amygdalus ledebouriana in Yumin County and Burqin County were investigated and their diversity characteristies and species diversity were analyzed.The result showed that the community structure of distribution range of wild almond in which north area of floristic composition of the dominant temperature were accepted as dominant,indicating that temperature properties were wild almond area floristic characteristics.Both plant communities took wild almond as principal component community but community structure composition was different,which suggested that there were differences between habitat adaptability and species diversity;The rank order of species richness,diversity index and evenness of both communtiy species were as follows：herb layershrub layer.