四川黄龙钙华藻类及其生物岩溶作用  

Tufa algae and biological karstification at Huanglong,Sichuan

作　　者：李永新[1] 田友萍[1] 李银[1] 

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《中国岩溶》2011年第1期86-92,共7页Carsologica Sinica

基　　金：国家自然科学基金(40872197;40402004;40872168)

摘　　要：从探索黄龙钙华的生物成因角度出发,对黄龙钙华藻类进行了采集、鉴定和分析,并对钙华藻类的生物岩溶作用做了初步探讨。研究得出黄龙钙华藻类分属于4门19属86种,优势种属为Tolypothrix属、Gloeocapsa属和Cymbella属。黄龙景区不同环境区域的优势藻类有所不同,藻类参与的碳酸盐沉积在不同岩溶景观中所起作用也有所差异。其中蓝藻参与的碳酸盐沉积主要表现于黄龙钙华坝景观的形成过程中,由硅藻参与碳酸盐沉积主要表现于斜坡滩华景观的形成过程中。藻类既能在钙华形成过程中发挥作用,藻类的生长也能侵蚀破坏钙华景观,在长期缺乏岩溶水补给的条件下,藻类对钙华景观的破坏性尤为突出。To gain a clear idea of biogenic origin in the development of tufa at Huanglong,Sichuan Province,the tufa algae samples are identified and analyzed in the paper.Meanwhile,it probed into the role of tufa algae in the biological karstification at Huanglong.The results show that there are 86 species,varieties and forms,belonging to 19 genera and 4 phylum,the dominant genera are Tolypothrix,Gloeocapsa and Cymbella.In different environmental area at Huanglong,there are different dominant algae.The role of tufa algea in the precipitation of carbonate isn＇t the same at different karst landscapes.The carbonate precipitation which cyanophyta（cyanobacteria） participate in is primarily contributing to the formation of tufa rimstone.The carbonate precipitation which diatom participates in is primarily contributing to the formation of tufa slope.Besides the carbonate precipitation,algae will also corrode the tufa landscapes.Under the situation of longtime lacking karst water,the destructive effect of tufa algae is especially serious,so tufa landscapes at Huanglong is urgently need defense and treatment.

关 键 词：钙华 藻类 生物岩溶 四川黄龙 

分 类 号：P931.5[天文地球—自然地理学] Q949.2[生物学—植物学]