本文關鍵詞：云南省紅河流域浮游植物多樣性及水質(zhì)季節(jié)動態(tài)研究　出處：《甘肅農(nóng)業(yè)大學學報》2017年05期 　論文類型：期刊論文

  更多相關文章： 紅河流域 浮游植物 多樣性 水質(zhì)狀況

【摘要】：【目的】了解云南省紅河流域浮游植物多樣性及水質(zhì)季節(jié)動態(tài).【方法】以云南省紅河流域為例,連續(xù)2a采用定點實地調(diào)查和水質(zhì)采樣相結合的方法研究了不同季節(jié)(春季、夏季、秋季和冬季)水質(zhì)變化(全氮TN、全磷TP、生物耗氧量BOD5和化學耗氧量CODcr)及浮游植物多樣性分布狀況.【結果】(1)紅河流域主要浮游植物種類為綠藻門和硅藻門,不同浮游植物細胞密度和豐度隨季節(jié)均呈現(xiàn)一致的變化規(guī)律,夏季和秋季顯著高于春季和冬季,局部有所波動.(2)紅河流域浮游植物Shannon-Wiener多樣性指數(shù)(H)、Pielou均勻度指數(shù)(JP)、Margalef種類豐富度指數(shù)(S)隨季節(jié)呈"V"字型變化規(guī)律,在春季和冬季達到最高,夏季和秋季較低;不同指數(shù)所判定的污染類型不相一致.(3)紅河流域水質(zhì)季節(jié)性變化較為明顯,水體透明度、水溫、pH,TN,TP,BOD5和CODcr質(zhì)量濃度呈一致的變化規(guī)律,在夏季和秋季最高,春季和冬季較低.(4)應用灰關聯(lián)分析評價紅河流域水質(zhì)類別,呈現(xiàn)不同季節(jié)水質(zhì)與《標準》中的Ⅰ類水質(zhì)的關聯(lián)度最大,分別為0.725,0.836,0.814,0.781,在不同季節(jié)里水質(zhì)等級均為Ⅰ類.【結論】不同季節(jié)紅河流域浮游植物多樣性均與水體透明度呈極顯著的負相關(P0.01),影響春季和冬季浮游植物多樣性的主要因素為TN質(zhì)量濃度、TP質(zhì)量濃度,影響夏季和秋季浮游植物多樣性的主要因素為TN質(zhì)量濃度、TP質(zhì)量濃度、BOD5濃度和CODcr濃度.綜合分析表明:紅河流域春季和冬季水質(zhì)狀況較好,夏季和秋季水質(zhì)狀況較差.
[Abstract]:[Objective] to understand the seasonal dynamics of phytoplankton diversity and water quality in Honghe River Basin of Yunnan province. [method] in Honghe River Basin in Yunnan Province as an example, using the method of continuous 2A fixed-point investigation and water quality sampling on the combination of different seasons (spring, summer, autumn and winter) water quality changes (TN, TP, total nitrogen total phosphorus BOD and COD BOD5 CODcr) status and phytoplankton diversity distribution. [results] (1) the main phytoplankton species in Honghe Chlorophyta and bacillariophyta, different phytoplankton density and seasonal abundance showed consistent variation, summer and autumn was significantly higher than that in spring and winter, local fluctuations (. 2) Red River phytoplankton diversity index of Shannon-Wiener (H), Pielou evenness index (JP), Margalef species richness index (S) with a "V" type seasonal variation in spring and winter The season reached the highest in summer and lower in autumn; the different types of pollution index determination is not consistent. (3) the Red River Basin more obvious seasonal change of water quality, water transparency, water temperature, pH, TN, TP, BOD5 and CODcr concentration showed a similar variation in summer and autumn season, the highest in the spring. And low in winter. (4) the application of grey relational analysis and evaluation of water quality in Honghe River Basin, of water showing seasonal water quality and the "standard" in the maximum degree, respectively 0.725,0.836,0.814,0.781, in different seasons the water quality rating for the class. [Conclusion] the diversity of river phytoplankton and water in different seasons in Honghe transparency has significant negative correlation (P0.01). The influence of spring and winter phytoplankton diversity of the main factors for the TN concentration, TP concentration, summer and autumn phytoplankton diversity influence the main factors for the mass concentration of TN Degree, TP concentration, BOD5 concentration and CODcr concentration. The comprehensive analysis shows that the water quality of the Honghe River Basin is better in spring and winter, and the water quality in summer and autumn is poor.
【作者單位】： 云南省紅河哈尼族彝族自治州環(huán)境監(jiān)測站;云南今禹生態(tài)工程咨詢有限公司;紅河學院理學院;
【基金】：國家自然科學基金項目(21366011) 云南省自然科學基金應用基礎研究項目(2013FZ120) 云南省紅河學院化學學科開放基金(HXY1303)
【分類號】：X173;X52
【正文快照】： 浮游植物作為淡水生態(tài)系統(tǒng)中的初級生產(chǎn)者,是生態(tài)系統(tǒng)中物質(zhì)循環(huán)和能量流動的基礎和重要的水生生物群落[1-3];其群落結構會引起生態(tài)系統(tǒng)中食物網(wǎng)結構的改變,從而影響著水生生態(tài)系統(tǒng)的功能、結構和信息傳遞[4-5].由于浮游植物對環(huán)境因素的響應十分敏感,其種類組成、數(shù)量分布、

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