發(fā)布時(shí)間：2019-03-17 11:22

【摘要】：為探究不同表層巖溶帶巖溶水系統(tǒng)和人類干擾方式下滇東南峰林湖盆區(qū)表層巖溶泉地球化學(xué)變化特征及其影響因素,利用CTDP300水質(zhì)檢測(cè)儀,對(duì)不同地質(zhì)背景下的兩泉域的水化學(xué)性質(zhì)從月動(dòng)態(tài)和降雨動(dòng)態(tài)兩個(gè)尺度進(jìn)行了一個(gè)水文年的觀測(cè)。結(jié)果表明:(1)菜花箐泉理化指標(biāo)季節(jié)動(dòng)態(tài)變幅較大:水溫為4.6℃,電導(dǎo)率為302μs/cm,pH為0.66,水濁度為255.1;火把洞泉變幅相對(duì)較小:水溫為3.3℃,電導(dǎo)率為225μs/cm,pH為0.5,水濁度9.8。(2)無雨時(shí):菜花箐泉?dú)鉁嘏c水溫、電導(dǎo)率、pH呈正相關(guān)關(guān)系;火把洞氣溫與水溫呈現(xiàn)正相關(guān)關(guān)系,水溫與電導(dǎo)率、pH呈現(xiàn)負(fù)相關(guān)關(guān)系。(3)強(qiáng)降雨時(shí):菜花箐泉在降雨初期水溫、電導(dǎo)率、水濁度均出現(xiàn)峰值,pH呈現(xiàn)低值。在降雨中后期,電導(dǎo)率大幅度上升,在6 h內(nèi)從189μs/cm上升到405μs/cm,pH出現(xiàn)峰值后呈波動(dòng)下降趨勢(shì)�；鸢讯慈诮涤瓿跗谒疁嘏c電導(dǎo)率、pH呈正相關(guān)關(guān)系,各自呈現(xiàn)本期間峰值。在降雨持續(xù)10 h后,pH、電導(dǎo)率均呈現(xiàn)下降趨勢(shì)。(4)弱降雨氣候條件下:菜花箐和火把洞泉的理化指標(biāo)變幅都較小,在降雨初期、中期和后期兩泉域pH、電導(dǎo)率都出現(xiàn)稀釋效應(yīng)曲線。
[Abstract]:In order to explore the geochemical characteristics and influencing factors of surface karst springs in the Fenglin Lake basin of southeast Yunnan under different karst water systems and human interference modes, a CTDP300 water quality detector was used. The hydrochemical properties of the two spring regions under different geological background are observed in a hydrological year from the monthly dynamics and the rainfall dynamics. The results show that: (1) the seasonal dynamic variation of physicochemical indexes of cauliflower Qingquan is larger: water temperature is 4.6 鈩，

本文編號(hào)：2442245