琵琶潭瀑布岩溶沉积物生物多样性研究  

Biodiversity on karst deposits at Pipatan waterfall

作　　者：王智慧[1] 张朝晖[2] 李建华[1] 

机构地区：[1]同济大学环境科学与工程学院长江水环境教育部重点实验室 [2]复旦大学生物多样性科学研究所生物多样性与生态工程教育部重点实验室

出　　处：《中国岩溶》2007年第2期178-182,共5页Carsologica Sinica

基　　金：国家自然科学基金(No.30460014);国家人事部留学人员择优资助项目[国人部发(2003)50号];贵州省优秀科技教育人才省长专项基金[黔科教(2003)04]资助项目

摘　　要：为了探索瀑布岩溶沉积物中生物多样特征,2006年12月对贵阳市琵琶潭瀑布岩溶沉积环境进行了野外生态学调查,采集样品和标本25份。经室内初步分析和鉴定,该瀑布岩溶沉积物中含有5大生物多样性类群共33个物种,它们是蓝细菌(Cyanobacteria) 2个种,原生动物(Protozoan) 12个种,绿藻(Green algae) 1个种,硅藻(Diatoms) 10个种和苔藓植物(Bryophytes)8个种。生物多样性在琵琶潭岩溶沉积形成中的地质生态学贡献主要表现在: (1)生物表面为淡水碳酸钙晶体提供了附着基础;(2)绿色植物光合作用转移了二氧化碳,有助于碳酸钙沉积;(3)生物群落为瀑布岩溶沉积提供了骨架;(4)生物群落在一定程度上控制和影响了岩溶沉积形态。Biodiversity is one of scientific hotspots for modern society. For the research of characteristics of biodiversity from karst deposits of waterfall, the authors conducted out a fieldwork at Pipatan karst waterfall in Guiyang, Guizhou province in December 2006. After our identification and analysis in laboratory, 33 taxa belonging to five groups have been found from karst deposits at Pipatan waterfall. Among them, there are two species for cyanobacteria while twelve for protozoan, one for green algae,ten for diatoms and eight for bryophytes. The relationship between biodiversity and karst deposition of waterfall have been discussed in this paper, including （1） the surfaces of biota acting as sites for nucleation and crystal growth of calcium carbonate from fresh water; （2）the process of photosynthesis removes carbon dioxide from the water, favoring carbonate precipitation; （3）living communities providing a framework for carbonate deposition; （4）the morphology of karst deposition may be affected by the growth of living communities. Biodiversity may play an important geo-ecological role in karst deposition process at Pipatan waterfall.

关 键 词：生物多样性 蓝藻 原生动物 绿藻 硅藻 苔藓 生物岩溶沉积 琵琶潭瀑布 

分 类 号：Q948.15[生物学—植物学]