湖泊科学最新文献

英文中文

Seasonal variation and driving factors of primary productivity of phytoplankton in Lake Changhu, Jianghan Plain 江汉平原长湖浮游植物初级生产力季节变化及驱动因素

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0307

L. Xuemei, Liu Lu, Gong Sensen, Meng Zihao, Hui Feifei, Chai Yi, Yang Deguo

引用次数: 0

The mechanism of buoyancy regulation in the process of cyanobacterial bloom 蓝藻华过程中浮力调节的机制

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0401

Fang Fei, Sui Yifan, Zhu Wenhan, Gan Lin, Zhang Yong, Yang Liuyan

引用次数: 0

Effects of heavily polluted sediments on propagule germination and seedling growth of Vallisneria natans and Hydrilla verticillata 重度污染沉积物对水螅和水螅繁殖体萌发和幼苗生长的影响

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0418

Zhang Shuxian, Li Zhuxi, Zhang Haokun, L. Xia, P. Xue, Ge Fangjie, Zhang Lu, Wu Zhenbin, Liu Biyun

引用次数: 0

Spectral characteristics and influencing factors of lake ice in Lake Chagan during frozen season 查干湖冻结季湖泊冰谱特征及其影响因素

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0444

Shi Xiaoguang, Yang Qian, Zhou Chao, Ji Wenzheng, Tao Feng, Liang Weibang, Zhao Ruixue, Lin Nan

引用次数: 0

Dynamic characteristics of vegetation communities in the floodplain wetland of Lake Poyang based on spatio-temporal fusion of remote sensing data 基于遥感数据时空融合的鄱阳湖漫滩湿地植被群落动态特征

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0434

Lin Yaling, Liao Xianghu, Tan Zhiqiang, Song Yanyan, Xu Chengyu

引用次数: 1

Ferric iron reduction coupled to anaerobic ammonium oxidation in the sediments of Lake Taihu 太湖沉积物中铁还原耦合厌氧氨氧化

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0521

Chen Xiaofeng, Wang Runzhu, Chen Jing, Zhu Shiya

引用次数: 1

Evolutions of water surface area and evaporation loss of Three Gorges Reservoir based on Landsat images, 1982-2021 1982-2021年基于Landsat影像的三峡库区水面面积与蒸发损失演变

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0544

Li Zuzhong, Zhang Xudong, Jiang Cong, Du Tao, Zeng Ling

引用次数: 1

Fractions and distribution characteristics of organic phosphorus in the sediment of the water level fluctuation zone of Lake Nansi 南四湖水位波动带沉积物中有机磷组分及分布特征

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0525

Zhang Zhibin, Wang Shuyi, Zhang Yanhao, Geng Shuying, Chen Fuai, Sun Xiaojian

研究南四湖消落带底泥有机磷赋存形态及分布特征,有利于全面揭示湖区各形态磷迁移转化规律,对南四湖富营养化防控及南水北调东线调水水质保障具有重要的科学意义。以南四湖消落带底泥为研究对象,采用改进Hedley连续分级提取法测定底泥中各形态有机磷含量,通过紫外可见分光光谱与三维荧光光谱技术表征底泥有机分子结构特征及稳定性,反映消落带有机磷结构及稳定性差异,运用Pearson相关性分析及主成分分析解析底泥各形态磷与其他理化指标的相关性。研究结果表明,南四湖消落带底泥总磷含量均值为679.90 mg/kg,其中有机磷(OP)占比20.03%~45.69%。各赋存形态有机磷含量及相对比例大小依次为:残渣态有机磷(67.58%)＞钙结合态有机磷(16.61%)＞铁/铝结合态有机磷(7.62%)＞碳酸氢钠提取态有机磷(5.97%)＞水提取态有机磷(2.22%)。南四湖消落带底泥OP含量及形态主要受内源影响,主要来自内源性微生物代谢。南四湖消落带西岸底泥磷释放风险高于东岸和南岸消落带。相关性分析发现,消落带底泥pH与磷含量显著负相关,表明随着底泥碱性的增强可能导致底泥磷向水体中释放的风险更高;底泥有机质与OP显著正相关,表明有机质可能是OP的重要载体;主成分分析发现底泥各形态磷呈正相关性,表明消落带底泥各形态磷具有同源性。研究结果可为南四湖湖区内源磷释放控制及富营养化风险防控提供科学依据。;The study of the fractions and distribution characteristics of organic phosphorus in the sediment of the water level fluctuating zone of Lake Nansi is conducive to revealing the transformation of phosphorus in the lake, and has important scientific significance for controlling the eutrophication of Lake Nansi. Based on the sediment of the water level fluctuation zone of Lake Nansi, the improved Hedley continuous grading extraction, ultraviolet-visible spectroscopy and three-dimensional fluorescence spectroscopy were used to characterize the structural characteristics and stability of organic molecules in the sediment, and to reflect the differences in the structure and stability of organophosphates in the water level fluctuating zone; and the Pearson correlation analysis and principal component analysis were used to determine the correlation of various fractions of phosphorus and other physical and chemical indicators. The results showed that the average content of total phosphorus (TP) in the sediment of the water level fluctuation zone of Lake Nansi was 679.90 mg/kg, and the proportion of organic phosphorus (OP) was 20.03%-45.69%. The contents and relative proportions of organic phosphorus in each occurrence form were as follows: Residual organic phosphorus (Residual-Po, 67.58%) > calcium bound organic phosphorus (HCl-Po, 16.61%) > iron/aluminium bound organic phosphorus (NaOH-Po, 7.62%) > potentially active organic phosphorus (NaHCO₃-Po, 5.97%) > weakly adsorbed organic phosphorus (H₂O-Po, 2.22%). The content and fractions of OP in the sediment in the water level fluctuation zone of Lake Nansi were mainly influenced by endogenous sources, mainly from the metabolism of endogenous microorganisms. The risk of sediment phosphorus release in the fluctuating water level zone of the west bank of the lake was higher than that of the east and south banks. Correlation analysis showed that there was a significant negative correlation between sediment pH and phosphorus content in the fluctuating zone, indicating that the increase in sediment alkalinity may lead to a higher risk of phosphorus release to water. There was a significant positive correlation between organic matter and OP (R²=0.719, P<0.01), indicating that organic matter may be an important carrier of OP. Principal component analysis showed that all phosphorus fractions in the

研究南四湖消落带底泥有机磷赋存形态及分布特征,有利于全面揭示湖区各形态磷迁移转化规律,对南四湖富营养化防控及南水北调东线调水水质保障具有重要的科学意义。以南四湖消落带底泥为研究对象,采用改进Hedley连续分级提取法测定底泥中各形态有机磷含量,通过紫外可见分光光谱与三维荧光光谱技术表征底泥有机分子结构特征及稳定性,反映消落带有机磷结构及稳定性差异,运用Pearson相关性分析及主成分分析解析底泥各形态磷与其他理化指标的相关性。研究结果表明,南四湖消落带底泥总磷含量均值为679.90 mg/kg,其中有机磷(OP)占比20.03%~45.69%。各赋存形态有机磷含量及相对比例大小依次为:残渣态有机磷(67.58%)＞钙结合态有机磷(16.61%)＞铁/铝结合态有机磷(7.62%)＞碳酸氢钠提取态有机磷(5.97%)＞水提取态有机磷(2.22%)。南四湖消落带底泥OP含量及形态主要受内源影响,主要来自内源性微生物代谢。南四湖消落带西岸底泥磷释放风险高于东岸和南岸消落带。相关性分析发现,消落带底泥pH与磷含量显著负相关,表明随着底泥碱性的增强可能导致底泥磷向水体中释放的风险更高;底泥有机质与OP显著正相关,表明有机质可能是OP的重要载体;主成分分析发现底泥各形态磷呈正相关性,表明消落带底泥各形态磷具有同源性。研究结果可为南四湖湖区内源磷释放控制及富营养化风险防控提供科学依据。;The study of the fractions and distribution characteristics of organic phosphorus in the sediment of the water level fluctuating zone of Lake Nansi is conducive to revealing the transformation of phosphorus in the lake, and has important scientific significance for controlling the eutrophication of Lake Nansi. Based on the sediment of the water level fluctuation zone of Lake Nansi, the improved Hedley continuous grading extraction, ultraviolet-visible spectroscopy and three-dimensional fluorescence spectroscopy were used to characterize the structural characteristics and stability of organic molecules in the sediment, and to reflect the differences in the structure and stability of organophosphates in the water level fluctuating zone; and the Pearson correlation analysis and principal component analysis were used to determine the correlation of various fractions of phosphorus and other physical and chemical indicators. The results showed that the average content of total phosphorus (TP) in the sediment of the water level fluctuation zone of Lake Nansi was 679.90 mg/kg, and the proportion of organic phosphorus (OP) was 20.03%-45.69%. The contents and relative proportions of organic phosphorus in each occurrence form were as follows: Residual organic phosphorus (Residual-Po, 67.58%) > calcium bound organic phosphorus (HCl-Po, 16.61%) > iron/aluminium bound organic phosphorus (NaOH-Po, 7.62%) > potentially active organic phosphorus (NaHCO3-Po, 5.97%) > weakly adsorbed organic phosphorus (H2O-Po, 2.22%). The content and fractions of OP in the sediment in the water level fluctuation zone of Lake Nansi were mainly influenced by endogenous sources, mainly from the metabolism of endogenous microorganisms. The risk of sediment phosphorus release in the fluctuating water level zone of the west bank of the lake was higher than that of the east and south banks. Correlation analysis showed that there was a significant negative correlation between sediment pH and phosphorus content in the fluctuating zone, indicating that the increase in sediment alkalinity may lead to a higher risk of phosphorus release to water. There was a significant positive correlation between organic matter and OP (R2=0.719, P<0.01), indicating that organic matter may be an important carrier of OP. Principal component analysis showed that all phosphorus fractions in the sediment were positively correlat

{"title":"Fractions and distribution characteristics of organic phosphorus in the sediment of the water level fluctuation zone of Lake Nansi","authors":"Zhang Zhibin, Wang Shuyi, Zhang Yanhao, Geng Shuying, Chen Fuai, Sun Xiaojian","doi":"10.18307/2023.0525","DOIUrl":"https://doi.org/10.18307/2023.0525","url":null,"abstract":"研究南四湖消落带底泥有机磷赋存形态及分布特征,有利于全面揭示湖区各形态磷迁移转化规律,对南四湖富营养化防控及南水北调东线调水水质保障具有重要的科学意义。以南四湖消落带底泥为研究对象,采用改进Hedley连续分级提取法测定底泥中各形态有机磷含量,通过紫外可见分光光谱与三维荧光光谱技术表征底泥有机分子结构特征及稳定性,反映消落带有机磷结构及稳定性差异,运用Pearson相关性分析及主成分分析解析底泥各形态磷与其他理化指标的相关性。研究结果表明,南四湖消落带底泥总磷含量均值为679.90 mg/kg,其中有机磷(OP)占比20.03%~45.69%。各赋存形态有机磷含量及相对比例大小依次为:残渣态有机磷(67.58%)＞钙结合态有机磷(16.61%)＞铁/铝结合态有机磷(7.62%)＞碳酸氢钠提取态有机磷(5.97%)＞水提取态有机磷(2.22%)。南四湖消落带底泥OP含量及形态主要受内源影响,主要来自内源性微生物代谢。南四湖消落带西岸底泥磷释放风险高于东岸和南岸消落带。相关性分析发现,消落带底泥pH与磷含量显著负相关,表明随着底泥碱性的增强可能导致底泥磷向水体中释放的风险更高;底泥有机质与OP显著正相关,表明有机质可能是OP的重要载体;主成分分析发现底泥各形态磷呈正相关性,表明消落带底泥各形态磷具有同源性。研究结果可为南四湖湖区内源磷释放控制及富营养化风险防控提供科学依据。;The study of the fractions and distribution characteristics of organic phosphorus in the sediment of the water level fluctuating zone of Lake Nansi is conducive to revealing the transformation of phosphorus in the lake, and has important scientific significance for controlling the eutrophication of Lake Nansi. Based on the sediment of the water level fluctuation zone of Lake Nansi, the improved Hedley continuous grading extraction, ultraviolet-visible spectroscopy and three-dimensional fluorescence spectroscopy were used to characterize the structural characteristics and stability of organic molecules in the sediment, and to reflect the differences in the structure and stability of organophosphates in the water level fluctuating zone; and the Pearson correlation analysis and principal component analysis were used to determine the correlation of various fractions of phosphorus and other physical and chemical indicators. The results showed that the average content of total phosphorus (TP) in the sediment of the water level fluctuation zone of Lake Nansi was 679.90 mg/kg, and the proportion of organic phosphorus (OP) was 20.03%-45.69%. The contents and relative proportions of organic phosphorus in each occurrence form were as follows: Residual organic phosphorus (Residual-Po, 67.58%) > calcium bound organic phosphorus (HCl-Po, 16.61%) > iron/aluminium bound organic phosphorus (NaOH-Po, 7.62%) > potentially active organic phosphorus (NaHCO3-Po, 5.97%) > weakly adsorbed organic phosphorus (H2O-Po, 2.22%). The content and fractions of OP in the sediment in the water level fluctuation zone of Lake Nansi were mainly influenced by endogenous sources, mainly from the metabolism of endogenous microorganisms. The risk of sediment phosphorus release in the fluctuating water level zone of the west bank of the lake was higher than that of the east and south banks. Correlation analysis showed that there was a significant negative correlation between sediment pH and phosphorus content in the fluctuating zone, indicating that the increase in sediment alkalinity may lead to a higher risk of phosphorus release to water. There was a significant positive correlation between organic matter and OP (R2=0.719, P<0.01), indicating that organic matter may be an important carrier of OP. Principal component analysis showed that all phosphorus fractions in the ","PeriodicalId":37454,"journal":{"name":"Hupo Kexue/Journal of Lake Sciences","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135358380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Characteristics and mechanism of water mixing structure during the extinction of thermal stratification in southern reservoirs 南方储层热分层消亡过程中水混合结构特征及机理

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0522

Wang Can, Li Yiping, Li Niegui, Guo Jinchuan, Zhu Ya, Wu Weixiong, Wei Yao, Chen Yu

引用次数: 1

Methods on quantifying ecological operation target based on bio-hydrological response model for stimulating the reproduction of four major Chinese carps in the Three Gorges Reservoir 基于生物水文响应模型的三峡库区刺激四种鱼繁殖生态运行目标量化方法

Q2 Earth and Planetary Sciences

Hupo Kexue/Journal of Lake Sciences

Pub Date : 2023-01-01 DOI: 10.18307/2023.0533

Liu Han, Lin Junqiang, Qin Xin, Huang Jin, Yu Lixiong, Xiong Dingsong, Pu Yuan

为了改善生态调度效果,提高生态调度实践成功率,采用医学领域适用性广、准确性高、直观性强的受试者工作特征曲线法(receiver operating characteristic, ROC),以三峡水库为例,提出了一套基于生物水文响应模型的刺激四大家鱼繁殖生态调度目标量化方法,包括涨水事件界定及生态水文指标选择、鱼类自然繁殖事件及有效繁殖响应界定、生物-水文响应模型构建与多指标判别优选等多个环节。运用三峡水库运行后2013—2019年(除2016年)6年47场次宜昌江段的涨水事件和24次四大家鱼有效繁殖响应的实际观测数据构建模型并量化三峡水库生态调度目标。结果表明:(1)依据初始流量Q₀、洪峰流量Q_peak、流量总增长量Q_sum和流量日增长率dQ这4个指标所建立的单指标生物-水文响应模型具有较好判别四大家鱼自然繁殖对水文条件是否响应的能力;(2)各评价指标Q₀、Q_peak、Q_sum、dQ的最佳阈值分别为14960 m³/s、19610 m³/s、4050 m³/s及1405 m³/(s·d);单指标模型性能排序为dQ＞Q_peak＞Q_sum＞Q₀;(3)依据dQ或Q_peak的指标组合方式建立的多指标生物-水文响应模型综合性能最佳。结果表明,ROC模型方法结果形式简单、预见性强,据此量化生态调度目标,可为其他流域、水库的鱼类繁殖响应判别和水库生态调度方案制定提供参考借鉴。;In order to improve the ecological operation effect and increase the success rate of ecological operation practice, a set of ecological operation target quantification methods based on the bio-hydrological response model for stimulating reproduction of four major Chinese carps is proposed. The method includes the definition of upwelling event, the selection of eco-hydrological indicators, the definition of natural fish reproduction event and effective reproduction response, the construction of bio-hydrological response model and multi-indicator discriminative preference. The actual observed data of 47 upwelling events and 24 effective reproduction responses of four fish in the Yichang River section for 6 years after the operation of the Three Gorges Reservoir from 2013 to 2019 (except 2016), were used to construct the model and quantify the ecological planning goals of the reservoir. The results showed that (1) the single-indicator bio-hydrological response model based on the four indicators of initial flow (Q₀), peak flood flow (Q_peak), total flow growth (Q_sum) and daily flow growth rate (dQ) had the ability to discriminate whether the natural reproduction of the four major carp was responsive to hydrological conditions; (2) the optimal thresholds for the above evaluation indicators were 14960 m³/s, 19610 m³/s, 4050 m³/s and 1405 m³/(s·d), respectively; the performance of the single indicator model was ranked as dQ>Q_peak>Q_sum>Q₀; (3) the comprehensive performance of the multi-indicator bio-hydrological response model based on the combination of dQ or Q_peak was the best. The model results are simple and predictable, and can be used to quantify the ecological operating targets, which can provide a reference for discriminating fish reproduction response and formulating reservoir ecological planning in different watersheds and reservoirs.

为了改善生态调度效果,提高生态调度实践成功率,采用医学领域适用性广、准确性高、直观性强的受试者工作特征曲线法(receiver operating characteristic, ROC),以三峡水库为例,提出了一套基于生物水文响应模型的刺激四大家鱼繁殖生态调度目标量化方法,包括涨水事件界定及生态水文指标选择、鱼类自然繁殖事件及有效繁殖响应界定、生物-水文响应模型构建与多指标判别优选等多个环节。运用三峡水库运行后2013—2019年(除2016年)6年47场次宜昌江段的涨水事件和24次四大家鱼有效繁殖响应的实际观测数据构建模型并量化三峡水库生态调度目标。结果表明:(1)依据初始流量Q0、洪峰流量Qpeak、流量总增长量Qsum和流量日增长率dQ这4个指标所建立的单指标生物-水文响应模型具有较好判别四大家鱼自然繁殖对水文条件是否响应的能力;(2)各评价指标Q0、Qpeak、Qsum、dQ的最佳阈值分别为14960 m3/s、19610 m3/s、4050 m3/s及1405 m3/(s·d);单指标模型性能排序为dQ＞Qpeak＞Qsum＞Q0;(3)依据dQ或Qpeak的指标组合方式建立的多指标生物-水文响应模型综合性能最佳。结果表明,ROC模型方法结果形式简单、预见性强,据此量化生态调度目标,可为其他流域、水库的鱼类繁殖响应判别和水库生态调度方案制定提供参考借鉴。;In order to improve the ecological operation effect and increase the success rate of ecological operation practice, a set of ecological operation target quantification methods based on the bio-hydrological response model for stimulating reproduction of four major Chinese carps is proposed. The method includes the definition of upwelling event, the selection of eco-hydrological indicators, the definition of natural fish reproduction event and effective reproduction response, the construction of bio-hydrological response model and multi-indicator discriminative preference. The actual observed data of 47 upwelling events and 24 effective reproduction responses of four fish in the Yichang River section for 6 years after the operation of the Three Gorges Reservoir from 2013 to 2019 (except 2016), were used to construct the model and quantify the ecological planning goals of the reservoir. The results showed that (1) the single-indicator bio-hydrological response model based on the four indicators of initial flow (Q0), peak flood flow (Qpeak), total flow growth (Qsum) and daily flow growth rate (dQ) had the ability to discriminate whether the natural reproduction of the four major carp was responsive to hydrological conditions; (2) the optimal thresholds for the above evaluation indicators were 14960 m3/s, 19610 m3/s, 4050 m3/s and 1405 m3/(s·d), respectively; the performance of the single indicator model was ranked as dQ>Qpeak>Qsum>Q0; (3) the comprehensive performance of the multi-indicator bio-hydrological response model based on the combination of dQ or Qpeak was the best. The model results are simple and predictable, and can be used to quantify the ecological operating targets, which can provide a reference for discriminating fish reproduction response and formulating reservoir ecological planning in different watersheds and reservoirs.

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