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水化学对水体着生微型生物群落组成与丰度的影响——以桂林毛村表层岩溶泉、砂页岩裂隙泉为例 被引量:5

Comparison of periphyton community composition and abundance under different hydro-chemical influences between epikarst spring and sand-shale fissure spring in Maocun,Guilin
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摘要 用载玻片作人工基质,放置在桂林毛村岩溶生态试验场碳酸盐岩分布区表层岩溶泉水和砂页岩区裂隙泉水中,开展着生微型生物群落结构研究。通过对比研究发现:毛村表层岩溶泉水中pH、游离CO2、固定CO2、K+、Na+、Ca2+、Mg2+、Cl-、HCO3-、NO3-和SO42-浓度均较砂页岩区裂隙泉水的高;砂页岩区水体中着生生物群落的种数和总个体密度均比岩溶区的低;富钙、偏碱性的岩溶泉水体中形成的着生藻类群落结构以硅藻门为主,而砂页岩区裂隙泉水的着生藻类群落结构则以绿藻门为主。岩溶泉水体的这种着生藻类群落结构的形成与岩溶泉水的富钙、偏碱性有很大的关系。 Periphyton community structure is studied in this paper by means of taking glass-medium as artificial substance to attract periphyton that is fixed in the Maocun epikarst spring water and in sand-shale fissure spring water. It is proved that the pH, dissociated CO2, immobile CO2 and the total contents of K^+,Na^+, Ca^2+,Mg^2+ ,Cl^-,HCO3^- ,NO3^- and SO4^2- in Maocun epikarst spring water are all higher than that in fissure spring water. Through one week field work and laboratory classification and identification, the species of the periphyton community in the water are examined. The Bacillariophyta is the major composition of periphyton community in epikarst spring water but the Chlorophyta in sand-shale fissure spring. And, the individual density of periphyton commnity in epikarst spring is higher than that in sand-shale fissure spring. Some calcite crystals are found on the glass-medium collected from epikarst spring water, and the preliminary study indicates that rich calcium and alkaline epikarst spring water can induce special species in periphyton community.
出处 《中国岩溶》 CAS CSCD 北大核心 2008年第3期261-265,共5页 Carsologica Sinica
基金 广西科学研究与技术开发计划项目(桂科能05112001-8A 桂科能0842008)
关键词 表层岩溶泉 砂页岩区裂隙泉 着生生物 桂林毛村 epikarst spring water sand-shale fissure spring water periphyton Maocun,Guilin
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参考文献9

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