中国北方中生代晚期水生昆虫群落演替与环境变迁  

AQUATIC COMMUNITY SUCCESSION AND ENVIRONMENTAL CHANGES OF LATE MESOZOIC IN NORTHERN CHINA

作　　者：刘平娟[1] 黄建东[2] 任东[1] 赵云云[1] 

机构地区：[1]首都师范大学生命科学学院,北京100048 [2]安徽古生物化石博物馆,合肥230601

出　　处：《动物分类学报》2009年第4期836-846,共11页Acta Zootaxonomica Sinica

基　　金：国家自然科学基金(40872022);北京自然科学基金(5082002);北京市属高等学校人才强教深化计划高层次人才资助项目;北京市教委重点项目(KZ200910028005)共同资助

摘　　要：列举了中侏罗统九龙山组水生昆虫9目28科52属70种,冀北、辽西义县组水生昆虫9目31科47属53种,以及伴生动植物。这些水生昆虫很可能不是自然死亡,而是突发性事件导致的突然死亡,化石为原地埋藏,没有经过搬运。根据统计的化石名录,初步建立了两时代的水生生态系统结构图,并恢复了它们所代表的生态环境。通过对比发现,中侏罗统九龙山组水生昆虫的物种多样性大于冀北、辽西义县组,中侏罗统九龙山组可能处于群落发展早期,生态系统相对不稳定,而冀北、辽西义县组处于群落发展的稳定时期,生态系统趋于成熟。两时代整体上都为温暖湿润的气候环境,但同时存在干旱-半干旱的小气候环境,且都分布有低地湖泊、溪流和沼泽等,这些水体都为低能水体环境。此外,都有高山存在,但这些水体环境在两时代存在差异,中侏罗统九龙山组水体相对较浅,水体面积相对较小,而冀北、辽西义县组水体相对较深,水体面积相对较大。Aquatic insects, representing 9 Orders, 28 families, 52 genera, and 70 species from the Middle Jurassic of the Jiulongshan Formation, 9 Orders, 31 families, 47 genera, and 53 species of the Yixian Formation in Northern Hebei and Western Liaoning, and their associated plants and other animals are enumerated here. These aquatic insects may die due to environmental changes or other natural disaster. These fossils were buried in situ, without removal. Hypothetical structures of ecosystems are preliminarily estabfished based on the fossil lists, and also their environmental settings are reconstructed. The Jiulongshan Formation has a richer species diversity than the Yixian Formation by comparison. The Jiulongshan Formation may represent an early stage of the community when the aquatic ecosystem was relatively unstable. However the Yixian Formation may represent a stable stage of the community when the aquatic ecosystem was stable. Overall, the climate was warm and humid, while there was seasonal arid and semi-arid climates in micro-environments during the two times. There were lakes, streams and swamps in both periods, and all of them were low-energy. In addition there were mountains. But the water environments were not the same in the two times. The water body is relatively shallow and small in the Jiulongshan Formation of the Middle Jurassic compared with that of the Yixian Formation in Northern Hebei and Western Liaoning.

关 键 词：中侏罗统 九龙山组 义县组 水生昆虫群落 生态系统结构关系 古生态环境 

分 类 号：Q915[天文地球—古生物学与地层学]