宁夏黄河湿地蝗虫区系组成分析

宁夏黄河湿地现已知有44种蝗虫,隶属2总科8科24属,占全自治区蝗虫总种数的50.57%。湿地蝗虫在种类组成上以蝗总科中的斑翅蝗科为优势类群,共计12属15种,占总种数的34.09%。网翅蝗科次之,共计3属11种,占总种数的25%。区系成分分析结果表明,宁夏黄河湿地蝗虫完全为古北界区系成分。在中国地理区划中有17个区系型,以蒙新区特有种所占比例最高,计17种,占总种数的38.64%。其次为蒙新区—青藏区系型,计4种,占9.09%。以宁夏黄河湿地11个自然行政地理区划为分类单元,对其种类生态地理分布进行聚类分析,探讨了地理生态环境与生物物种多样性之间的关系。

Analysis of the fauna composition of grasshoppers in Yellow River wetland of Ningxia

The composition and characters of the grasshopper fauna in Yellow River wetland of Ningxia were studied.Forty-four species of grasshoppers were collected,which belong to 2 superfamilies,8 families and 24 genera(50.57% of the grasshoppers known in Ningxia).The family Oedipodidae is the predominant group(12 genera and 15 species),occupying 34.09%of the total species.The family Arcypteridae(3 genera and 11 species)is the next,accounting for 25%.The faunal analysis shows that all species belong to Palaearctic species.In the zoogeographic regions of China,17 distribution patterns can be catalogued.The Mengxin Region and Mengxin-Qingzang Region are predominant types for these distribution patterns of Ningxia,and the endemic species of the former accounts for 38.64%(17 species)of the total species and the latter for 9.09%(4 species).By using DPS software,a cluster of grasshoppers in 11 administrative areas of Yellow River wetland in Ningxia was analyzed.The relationship between zoogeographical environments and its biodiversity was discussed.