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青藏高原东北部湖泊浮游植物对气候振荡的响应:来自1400年沉积物岩芯的证据

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Science Bulletin 2024年第9期69卷 1208-1211页

作者：张含笑郑佳楠王荣刘永高扬吴丰昌霍守亮 State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China School of Geography and Ocean Science Nanjing UniversityNanjing 210023China State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China Key Laboratory of Water and Sediment Science Ministry of EducationCollege of Environmental Science and EngineeringPeking UniversityBeijing 100871China Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China

The Tibetan Plateau, also known as the Water Tower of Asia, is home to 1424 lakes with areas of greater than 1 km2, and supplies freshwater resources for more than 1.4 billion people [1,2]. In the context of recent global change, the warmer climate has caused prominent changes in the characteristics of the lake evolution on the Tibetan Plateau, such as changes in the hydrology.

关键词： Tibetan Plateau 青藏高原东北部

青藏高原不同盐度湖泊细菌群落多样性及DOM分布特征

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环境科学学报 2024年第5期44卷 158-168页

作者：张佩莲张含笑霍守亮李怡张靖天翁南燕中国环境科学研究院环境基准与风险评估国家重点实验室北京100012

微生物在水生生态系统碳循环中发挥着重要的作用,目前对湖泊微生物组成与有机质之间的空间尺度联系以及对盐度的响应了解仍然有限.青藏高原对全球气候变化最为敏感的区域之一,是我国重要的生态安全屏障.本研究以青藏高原12个不同盐度的... 详细信息

微生物在水生生态系统碳循环中发挥着重要的作用,目前对湖泊微生物组成与有机质之间的空间尺度联系以及对盐度的响应了解仍然有限.青藏高原对全球气候变化最为敏感的区域之一,是我国重要的生态安全屏障.本研究以青藏高原12个不同盐度的湖泊作为研究对象,运用微生物测序技术和光谱分析方法探讨了湖泊细菌群落多样性与溶解有机质(DOM)组成和来源特征,通过三维荧光光谱矩阵-平行因子分析(PARAFAC)共识别出4种不同来源的荧光组分(C1~C4),并通过相关分析、冗余分析以及共现网络分析探究了细菌与DOM组成之间的联系以及对环境因素的响应.结果表明:(1)青藏高原湖泊不同盐度组别间细菌组成存在显著性差异(p<0.05),细菌α多样性(群落丰度)和β多样性受到盐度的显著影响;(2)细菌群落组成与DOM中的类腐殖质C3和类蛋白质C4组分存在显著相关,可能与多种细菌的协同作用有关;(3)DOM组成是影响细菌群落组成的关键因素,DOM光谱参数能够解释细菌群落组成69.56%的变化.本研究表明了水体DOM组成对湖泊细菌群落的显著影响,为青藏高原湖泊微生物与DOM相互作用机制研究提供了新的见解.

关键词：青藏高原湖泊微生物多样性盐度溶解有机质(DOM) 平行因子分析共现网络

What drives the change of nitrogen and phosphorus loads in the Yellow River Basin during 2006-2017?

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Journal of Environmental Sciences 2023年第4期126卷 17-28页

作者： Jiaqi Zheng Xianghui Cao Chunzi Ma Nanyan Weng shouliang huo State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental ScienceBeijing 100012China

The Yellow River Basin (YRB) plays a very important role in China’s economic and social development and ecological *** particular,the ecosystem of the YRB is sensitive to climate ***,the change of nutrient fluxes in this region during the past years and its main driving forces remain *** this study,a hydrologic model R System for Spatially Referenced Regressions on Watershed Attributes (RSPARROW) was employed to simulate the spatio-temporal variations in the fluxes of total nitrogen (TN) and total phosphorus (TP) during the period of *** results suggested that the TN and TP loads increased by 138%and 38%during 2006-2014,respectively,and decreased by 66%and 71%from 2015 to 2017,*** the period of 2006-2017,the annual mean fluxes of TN and TP in the YRB were in the range of 3.9 to 591.6 kg/km^(2)/year and 1.7 to 12.0 kg/km^(2)/year,*** flux was low in the upstream area of the Yellow River,and presented a high level in the middle and lower ***,the flux of TP in Gansu and Ningxia section was slightly higher than that in the lower reaches of the Yellow *** and point source are the key drivers for the inter-annual changes of TN loads in most regions of the *** the inter-annual variations of TP loads in the whole basin are mainly driven by the point *** study demonstrates the important impacts of climate change on nutrient loads in the ***,management measures should be taken to reduce pollution sources and thus provide solid basis for control of nitrogen and phosphorus in the YRB.

关键词： Yellow river basin Nutrient loads Climate change Non-point source Point source

Biosorption of Cd2＋ and CU2＋ on immobilized Saccharomyces cerevisiae

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Frontiers of Environmental Science & Engineering 2012年第1期6卷 51-58页

作者： Fengyu ZAN shouliang huo Beidou XI Xiulan ZHAO College of Environmental Science Anhui Normal UniversityWuhu 241000China Chinese Research Academy of Environmental Sciences Beijing 100012China College of Resource and Environment Southwest UniversityChongqing 400716China

The biosorption of Cd2＋ and CH2＋ onto the immobilized Saccharomyces cerevisiae （S. cerevisiae） was investigated in this study. Adsorption kinetics, isotherms and the effect ofpH were studied. The results indicated that the biosorption of Cd^2＋ and Cu^2＋ on the immobilized S. cerevisiae was fast at initial stage and then became slow. The maximum biosorption of heavy metal ions on immobilized S. cerevisiae were observed at pH 4 for Cde＋ and Cu^2＋. by the pseudo-second-order model described the sorption kinetic data well according to the high correlation coefficient （R2） obtained. The biosorption isotherm was fitted well by the Langmuir model, indicating possible mono-layer biosorption of Cd^2＋ and Cu^2＋ on the immobilized S. cerevisiae. Moreover, the immobilized S. cerevisiae after the sorption of Cd^2＋ and Cu^2＋ could be regenerated and reused.

关键词： Saccharomyces cerevisiae (S. cerevisiae) biosorption heavy metals immobilization desorption

黄河源湖泊表层沉积物溶解有机质光谱特征与来源解析

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中国环境监测 2024年第4期40卷 195-203页

作者：张佩莲张含笑李文攀张靖天李怡霍守亮中国环境科学研究院环境基准与风险评估国家重点实验室北京100012 中国环境监测总站国家环境保护环境监测质量控制重点实验室北京100012

湖泊沉积物是重要的有机碳库,沉积物有机质来源及组成直接影响着水生生态系统健康。以黄河源区湖泊扎陵湖、茶木错、鄂陵湖、星星海和阿涌尕玛错为研究对象,采用紫外-可见光吸收光谱(UV-Vis)与三维荧光光谱(EEMs)结合平行因子分析(PARAF... 详细信息

湖泊沉积物是重要的有机碳库,沉积物有机质来源及组成直接影响着水生生态系统健康。以黄河源区湖泊扎陵湖、茶木错、鄂陵湖、星星海和阿涌尕玛错为研究对象,采用紫外-可见光吸收光谱(UV-Vis)与三维荧光光谱(EEMs)结合平行因子分析(PARAFAC)方法,对湖泊表层沉积物溶解有机质(DOM)的组成特征与来源进行解析。结果表明,PARAFAC模型共解析出4种荧光组分,分别是两种陆源腐殖质组分C1、C4,以及类酪氨酸组分C2、类色氨酸组分C3,其中C1、C4具有同源性。光谱参数和荧光组分占比分析结果表明,黄河源区湖泊表层沉积物DOM组成受外源输入和内源释放共同作用。扎陵湖和鄂陵湖的内源组分占比较其他湖泊高,总体腐殖化程度低。茶木错、星星海和阿涌尕玛错表层沉积物DOM的陆源输入信号更强,腐殖化特征更明显。光谱参数可有效表征湖泊沉积物DOM组成与来源特性,从而为黄河源区湖泊保护与管理提供科学依据。

关键词：黄河源湖泊溶解有机质光谱特征平行因子分析来源解析

A model and experimental study of phosphate uptake kinetics in algae:Considering surface adsorption and P-stress

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Journal of Environmental Sciences 2011年第2期23卷 189-198页

作者： Bo Yao Beidou Xi Chunming Hu shouliang huo Jing Su Hongliang Liu School of Environment Beijing Normal University Beijing 100875 China Chinese Research Academy of Environmental Sciences Beijing 100012 China College of Life Science Northeast Agriculture University Harbin 150030 China

Phosphorus is an important limiting nutrient in many ecosystems. Consequently, there is increasing interest on phosphate uptake and algal growth due to the increasing frequency and magnitude of algal blooms induced by eutrophication. The co-existence of surface adsorbed and intracellular phosphorus pools indicate that phosphate uptake by phytoplankton is, to some extent, a two-stage kinetic process. However, almost all previous uptake models considered the internal uptake stage only and ignored the possible impact of surface adsorption. In this article, a two-stage kinetic uptake model considering both surface adsorption and P-stress on phosphate uptake by algae was constructed and compared to conventional one-stage models, based on experimental data on short-term uptake kinetics of a green algae S. quadricauda. Results indicated that with suitable parameters, the two-stage uptake model not only fit the experimental data better, but also gave more reasonable and realistic explanations to the phosphate uptake process. The results are meaningful as surface-adsorption of phosphate may affect the uptake process of phosphate and assist in understanding realistic phosphate uptake kinetics in phytoplankton.

关键词： phosnhate uotake surface adsorption P-starvation nhvtoplankton

Characteristics of dissolved organic matter(DOM) in leachate with different landfill ages

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Journal of Environmental Sciences 2008年第4期20卷 492-498页

作者： huo shouliang XI Beidou YU Haichan HE Liansheng FAN Shilei LIU Hongliang Environment School Beijing Normal University Beijing 100875 China Chinese Research Academy of Environmental Sciences Beijing 100012 China College of Life Sciences Beijing Normal University Beijing 100875 China The College of Architecture and Civil Engineering Beijing University of Technology Beijing 100022 China

The main objective of the study was to investigate the characteristics of dissolved organic matter （DOM） in leachate with different landfill ages through the chemical, spectroscopic, and elemental analysis. Humic acid （HA）, fulvic acid （FA）, and hydrophilic （HyI） fractions were isolated and purified by the XAD-8 resin combined with the cation exchange resin method. The analytical results of fluorescence excitation-emission matrix spectroscopy （EEMs） revealed that the fluorescence peaks were protein-like fluorescence for young landfill leachate, while the fluorescence peaks for medium and old landfill leachate were humic-like and fulvic-like fluorescence, respectively. Elemental analysis showed that carbon, hydrogen, and nitrogen content decreased with landfill age, while the oxygen content increased. Moreover, the nitrogen content in these isolated fractions followed： HA 〉 HyI 〉 FA. The results of elemental analysis, FT-IR, and fluorescence EEMs also confirmed that aromatic carbons and portions of aliphatic functional groups were more abundant in leachate samples with increasing landfill age.

关键词： dissolved organic matter (DOM) fluorescence EEMs DOM fractionafion landfill leachate

Development of methods for establishing nutrient criteria in lakes and reservoirs: A review

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Journal of Environmental Sciences 2018年第5期30卷 54-66页

作者： shouliang huo Chunzi Ma Beidou Xi Yali Zhang Fengchang Wu Hongliang Liu State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences

Nutrient criteria provide a scientific foundation for the comprehensive evaluation, prevention,control and management of water eutrophication. In this review, the literature was examined to systematically evaluate the benefits, drawbacks, and applications of statistical analysis,paleolimnological reconstruction, stressor-response model, and model inference approaches for nutrient criteria determination. The developments and challenges in the determination of nutrient criteria in lakes and reservoirs are presented. Reference lakes can reflect the original states of lakes, but reference sites are often unavailable. Using the paleolimnological reconstruction method, it is often difficult to reconstruct the historical nutrient conditions of shallow lakes in which the sediments are easily disturbed. The model inference approach requires sufficient data to identify the appropriate equations and characterize a waterbody or group of waterbodies, thereby increasing the difficulty of establishing nutrient criteria. The stressor-response model is a potential development direction for nutrient criteria determination, and the mechanisms of stressor-response models should be studied further. Based on studies of the relationships among water ecological criteria, eutrophication, nutrient criteria and plankton, methods for determining nutrient criteria should be closely integrated with water management requirements.

关键词： Nutrient criteria Statistical analysis approach Paleolimnological reconstructionapproach Stressor-response model Model inference approach

Arsenic fractionation and contamination assessment in sediments of thirteen lakes from the East Plain and Yungui Plateau Ecoregions, China

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Journal of Environmental Sciences 2014年第10期26卷 1977-1984页

作者： Fengyu Zan shouliang huo Jingtian Zhang Li Zhang Beidou Xi Lieyu Zhang State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Science College of Environmental Science and Engineering Anhui Normal University

Arsenic（As） fractions in the sediments of seven lakes from East Plain Ecoregion and six lakes from Yungui Plateau Ecoregion, China, were investigated. Results indicated that the total As concentrations in sediment samples of lakes of the East Plain Lake Ecoregion are higher than those of Yungui Plateau Lake Ecoregion. Residual As is the main fraction in sediment samples of lakes from both ecoregions, followed by reducible As and soluble or oxidizable As. The total As is correlated to oxidizable As and residual As in sediment samples from both lake ecoregions. As distribution in sediment samples of lakes of the East Plain Ecoregion appears to be affected by human activity, while the As origin mainly comes from natural sources in sediment samples of lakes in the Yungui Plateau Ecoregion. The potential ecological risk index and geoaccumulation index values suggest ＂low to moderate＂ risk degree and ＂unpolluted to moderately polluted＂ for As in the studied lake sediments.

关键词： Arsenic fractionation Sediment Contamination assessment Lake ecoregion