本文選題：丹江口庫區(qū)　切入點(diǎn)：浮游細(xì)菌　出處：《中國環(huán)境科學(xué)》2017年01期

【摘要】：為了解丹江口庫區(qū)南水北調(diào)中線工程通水后浮游細(xì)菌群落組成及影響因素,于2016枯水期(1月)對丹江庫區(qū)內(nèi)5個(gè)典型生態(tài)點(diǎn)位表層水樣進(jìn)行采集.水質(zhì)監(jiān)測結(jié)果表明庫區(qū)水質(zhì)總體較好,除總氮和高錳酸鹽指數(shù)外,其他各項(xiàng)指標(biāo)符合Ⅰ類水標(biāo)準(zhǔn)要求.總氮(TN)和高錳酸鹽指數(shù)(COD_(Mn))為庫區(qū)的主要污染因子,水體整體處于中營養(yǎng)狀態(tài).采用高通量測序技術(shù)對浮游細(xì)菌群落組成進(jìn)行研究,結(jié)果表明主要由放線菌門(Actinobacteria)、變形菌門(Proteobacteria)、藍(lán)藻門(Cyanobacteria)、擬桿菌門(Bacteroidetes)、疣烎菌門(Verrucomicrobia)、壁厚菌門(Firmicutes)、酸桿菌門(Acidobacteria)等22個(gè)門和323個(gè)屬組成.5位點(diǎn)樣品具有豐富的群落組成,浮游細(xì)菌群落多樣性排序?yàn)?黑雞嘴臺子山庫心宋崗渠首.對浮游細(xì)菌群落組成與環(huán)境因子的關(guān)系進(jìn)行典范對應(yīng)分析(CCA),結(jié)果表明:T、pH值、NH_4~+-N、SD顯著影響浮游細(xì)菌群落結(jié)構(gòu).
[Abstract]:In order to understand the composition and influencing factors of planktonic bacteria community in Danjiangkou Reservoir area after the mid-route project of South-to-North Water transfer Project, In the dry season of 2016 (January), the surface water samples of five typical ecological sites in the Danjiang reservoir area were collected. The results of water quality monitoring showed that the water quality of the reservoir area was good in general, except for total nitrogen and permanganate index. The total nitrogen (TNN) and permanganate index (COD) were the main pollution factors in the reservoir area, and the whole water body was in a medium nutrient state. The composition of planktonic bacteria community was studied by high-throughput sequencing technique. The results showed that 22 phylum and 323 genera of Actinobacteria, Proteobacteria, Cyanobacteria, Bacteroidetesa, Verrucomicrobiae, Firmicutes, Acidobacteria and Acidobacteria had rich community composition. The order of phytoplankton community diversity was as follows: Songgang canal head in Songgang canal of Taizi Mountain, Heijizui. The canonical correspondence analysis of the relationship between the composition of phytoplankton community and environmental factors was carried out. The results showed that NH _ 4 ~ -N _ (SD) significantly affected the structure of phytoplankton community.
【作者單位】： 南陽師范學(xué)院農(nóng)業(yè)工程學(xué)院河南省南水北調(diào)中線水源區(qū)生態(tài)安全重點(diǎn)實(shí)驗(yàn)室;南水北調(diào)中線水源區(qū)水安全河南省協(xié)同創(chuàng)新中心;南水北調(diào)中線渠首環(huán)境監(jiān)測應(yīng)急中心;
【基金】：國家自然科學(xué)基金項(xiàng)目(41601332) 河南省教育廳高等學(xué)校重點(diǎn)科研項(xiàng)目(16A210012,14A180015) 南陽師范學(xué)院高層次人才科研啟動費(fèi)資助項(xiàng)目(ZX2014069)
【分類號】：X524;X172

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