中国岩溶2016，Vol.35Issue(6)：605-613,9.DOI:10.11932/karst20160601
云南白水台钙华池出入口水化学和δ13CDIC昼夜变化的影响因素及水生光合作用影响比例的计算
Theoretical calculation of aquatic photosynthesis contribution ratio and the controlling factors of diurnal vatiations of hydrochemistry and δ13CDIC in the outlets and inlets of travertine pools at Baishuitai, Yunnan, China
摘要
Abstract
Travertine is a common secondary chemical sediment in karst areas,also one of the continental high-resolution climatic archives.Its formation is often associated with aquatic plants,whose metabolism can likely change hydrochemistry and carbon isotopic composition of dissolved inorganic carbon (DIC),thus affecting the carbon isotopic composition of travertine.However,the influence of micro-environment caused by aquatic plants is usually ignored when reconstructing paleoenvironments using carbon isotopic composition of travertine.A method of combining on-site high-resolution monitoring and in-situ titrating with measurement of samples in laboratory was used in present study to investigate the influence of submerged plant on hydrochemistry and carbon isotopic compositions of pool water.The results show that when pools were fed by low DIC concentration water (S1-3),the δ13CDIC difference between the outlet and inlet of the pool reflects the control of hysteresis effect,while fed by high DIC concentrations water (S1-1),the δ13CDICdifference between the outlet and inlet of the pool indicates the control of degassing effect.Because of the existence of the reservoir effect,the influence of metabolism of submerge plant on δ13CDICis small.关键词
水化学/碳同位素/水生植物/光合作用/脱气作用Key words
hydrochemistry/carbon isotope/submerged plants/photosynthesis/degassing effect分类
天文与地球科学引用本文复制引用
曾振宇,晏浩,孙海龙,刘再华..云南白水台钙华池出入口水化学和δ13CDIC昼夜变化的影响因素及水生光合作用影响比例的计算[J].中国岩溶,2016,35(6):605-613,9.基金项目
国家自然科学基金项目(41372263) （41372263）
岩溶动力学重点实验室开放基金资助课题(KDL2011-05) （KDL2011-05）
