







摘要:雅礱江擁有豐富的水能資源,桐子林水電站位于流域的最下游,浮游藻類研究較少。有必要監測桐子林水電站施工期和運行期的水體理化性質,分析浮游藻類變化。研究發現,施工期和運行期水質為Ⅰ~Ⅱ類,硅藻為主要類群;運行期,浮游藻類數量減少,但密度和生物量增加;pH、總氮(Total Nitrogen,TN)為限制性環境因子,高錳酸鹽指數(Permanganate Value,PV)為抑制性環境因子。因此,持續監測水體理化性質和浮游藻類變化,關注pH和TN含量至關重要。
關鍵詞:水體理化性質;浮游藻類;變化;桐子林水電站;雅礱江
中圖分類號:Q948.8;X524 文獻標識碼:A 文章編號:1008-9500(2024)07-0-04
DOI:10.3969/j.issn.1008-9500.2024.07.063
Analysis of phytoplankton changes during the construction and operation periods of the Tongzilin Hydropower Station on the Yalong River
WU Wenyong1, XU Dan1, LIU Xiaoshuai1, HE Xin2, ZUO Mingjie2, HAN Xianyu1
(1. Yalong Hydropower Development Co., Ltd.; 2. Sichuan Ertan Industrial Development Co., Ltd., Chengdu 610015, China)
Abstract: The Yalong River has abundant hydropower resources, and the Tongzilin Hydropower Station is located at the downstream of the basin, with relatively little research on planktonic algae. It is necessary to monitor the physical and chemical properties of the water body during the construction and operation periods of Tongzilin Hydropower Station, and analyze the changes in planktonic algae. Research has found that the water quality during the construction and operation periods is classified as Class Ⅰ~Ⅱ, with diatoms being the main group; during operation, the number of planktonic algae decreases, but their density and biomass increase; pH and Total Nitrogen (TN) is the limiting environmental factor, while Permanganate Value (PV) is the inhibitory environmental factor. Therefore, it is crucial to continuously monitor the physical and chemical properties of water bodies and changes in phytoplankton, while paying attention to pH and TN content.
Keywords: physical and chemical properties of water bodies; planktonic algae; changes; Tongzilin Hydropower Station; Yalong River
雅礱江是金沙江第一大支流,擁有豐富的水能資源,被列入國家規劃的十三大水電基地之一。桐子林水電站于2015年建成投運,位于流域最下游?,F有研究涉及雅礱江中下游的浮游動物[1]、底棲動物[2]等方面,但較少關注浮游藻類。浮游藻類通常為單細胞結構,對水體環境變化非常敏感,可作為指示生物反映水質和營養狀態[3-5]。比較分析桐子林水電站施工期和運行期浮游藻類的變化,可以為水電工程的水生生物保護提供基礎數據和科學依據。
1 材料與方法
1.1 采樣時間與斷面
分別對桐子林水電站施工期(2014年6月)和運行期(2020年5月)的雅礱江河口、壩址、安寧河口3個斷面進行水體和浮游藻類采樣監測。
1.2 水質理化性質測定
水體理化指標測定遵循《水環境監測規范》(SL 219—2013)。水溫和溶解氧(Dissolved Oxygen,DO)使用溶氧儀現場測定;pH使用便攜式pH計現場測定;高錳酸鹽指數(Permanganate Value,PV)、總氮(Total Nitrogen,TN)、氨氮(Ammonia Nitrogen,AN)、總磷(Total Phosphorus,TP)、懸浮物(Suspended Solids,SS)等環境因子參照《水和廢水監測分析方法》[6]分別進行測定。……