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An analysis on the evolvement processes of lake eutrophication and their characteristics of the typical lakes in the middle and lower reaches of Yangtze River

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chinese Science Bulletin 2006年第13期51卷 1603-1613页

作者： cheng xiaoying1,{1., chinese academy of sciences, nanjing 2.0008, china 2. The Key Laboratory of Industrial Biotechnology, Ministry of Educa- tion, Southern Yangtze University, Wuxi 21.036, china 3. School of Biotechnology, Southern Yangtze University, Wuxi 21.036, china nanjing {1. of geography & limnology Chinese Academy of Sciences Nanjing China The Key Laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi China School of Biotechnology Southern Yangtze University Wuxi China

According to the study on the aquatic environment of the typical lakes in the middle and lower reaches of Yangtze River, lake eutrophication is a process in which the lake ecosystem degenerates, resulting in the deterioration of the water quality due to the enrichment of the nutrients. Moreover, the succession of lake ecosystem and change of water quality both couple well with the evolvement of tro- phic state. Then the conceptual model is mentioned and ten lake states are classified. Based on these, the authors analyzed the eutrophication processes of the typical lakes in the middle and lower reaches of Yangtze River. The large lakes with taking in - send- ing out water typical of Poyang Lake evolve from State 1.before the 1.80s into State 2 after the 1.80s, the large and medium lakes typical of Taihu Lake evolve from State 1.2 in the 1.60s into State 8 in the 1.80s then into State 9 in the 1.90s, the medium and small shallow lakes typical of Honghu Lake evolve from State 1.in the 1.60s into State 2 after the 1.80s and the small city (suburban) lakes typical of Donghu Lake evolve from State 2 in the 1.60s into State 9 after the 1.70s. Further, the 1.80s is the key con- version period of the lakes of various types typical of Poyang Lake, Honghu Lake and Taihu Lake con- verting into mesotrophic state, the 1.90s is that of Taihu Lake into eutrophic state and the 1.70s is thatof the small city (suburban) lakes typical of Donghu Lake into eutrophic state. The series of nutrient evolvement of different typical lakes are similar, but the processes are not synchronous, which is related to the various human and natural driving mechanisms in lake basins.

关键词：长江湖泊富营养化概念模型转变时期驱动机制

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Response of Cultural Lake Eutrophication to Hemp-retting in Quidenham Mere of England in Post-Medieval

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chinese Geographical Science 2007年第1期17卷 69-74页

作者： cheng {1. li shijie SHEN Qing XUE Jing The Key Laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi 214122 China School of Biotechnology Southern Yangtze University Wuxi 214122 China nanjing {1. of geography ＆ limnology Chinese Academy of Sciences Nanjing 210008 China

To study the influence of human activity on natural lake, chironomid fauna change in the 700-560cm lake sediment in Quidenham Mere of England associated with chironomid inferred TP presented that the lake experienced a whole eutrophication process due to human hemp-retting in Post-Medieval based on the history record and pollen analysis, which was confirmed by mollusc and ostracod analysis. However, the response of chironomid and mollusc to retting was the strongest with ostracod a little behind. It proved that cultural eutrophication existed in history and could be recovered by itself despite of some long-term unachievahle destroy. And it was most important for external nutrient to be cut off during lake restoration even in ancient times.

关键词： chironomid cultural lake eutrophication ancient times Quidenham Mere

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Reconciled estimation of Antarctic ice sheet mass balance and contribution to global sea level change from 1.96 to 2021

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Science china Earth {1. 2024年第11期67卷 3562-3578页

作者： Rongxing li Guojun li Gang HAI Huan XIE Yuan cheng Wei CHEN Xiangbin CUI Minghu DING Chunchun GAO Tong HAO Changqing KE Chuanjin li Jin li Yan liU Jiangjun RAN Jiawen REN Qiang SHEN Yunzhong SHEN Hongling SHI Songyun WANG Zemin WANG Jingang ZHAN Baojun ZHANG Min ZHONG Chunxia ZHOU Center for Spatial Information Science and Sustainable Development Applications Tongji University College of Surveying and Geo-informatics Tongji University institute for the Conservation of Cultural Heritage School of Cultural Heritage and Information Management Shanghai University College of Resource Environment and Tourism Hubei University of Arts and Science Polar Research institute of{1. State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences College of Geodesy and Geomatics Shandong University of Science and Technology School of geography and Ocean Science Nanjing University Shanghai Astronomical Observatory Chinese Academy of Sciences State Key Laboratory of Remote Sensing Science Faculty of Geographical Science Beijing Normal University Department of Earth and Space sciences Southern University of Science and Technology State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences State Key Laboratory of Geodesy and Earth's Dynamics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of Sciences Center for Space Research University of Texas at Austin chinese Antarctic Center of Surveying and Mapping Wuhan University School of Geospatial Engineering and Science Sun Yat-sen University

The Antarctic Ice Sheet（AIS） has been losing ice mass and contributing to global sea level rise（GSLR）. Given its mass that is enough to cause ～58 m of GSLR, accurate estimation of mass balance trend is critical for AIS mass loss monitoring and sea level rise forecasting. Here, we present an improved approach to reconciled solutions of mass balance in AIS and its regions from multiple contributing solutions using the input-out, altimetric, and gravimetric methods. In comparison to previous methods, such as IMBIE 201., this approach utilizes an adaptive data aggregation window to handle the heterogeneity of the contributing solutions, including the number of solutions, temporal distributions, uncertainties, and estimation techniques. We improved the regression-based method by using a two-step procedure that establishes ensembled solutions within each method（input-output, altimetry, or gravimetry） and then estimates the method-independent reconciled solutions. For the first time, 1.contributing solutions from 8 chinese institutions are used to estimate the reconciled mass balance of AIS and its regions from1.96 to 2021. Our results show that AIS has lost a total ice mass of ～32.3±2.3 Gt during the period, an equivalent of～8.9±0.7 mm of GSLR. There is a sustained mass loss acceleration since 2006, from 88.1.3.6 Gt yr-1.uring 1.96–2005 to 1.0.7 ±8.4 Gt yr-1.uring 2006–201. and further to 1.7.0±9.0 Gt yr-1.uring 201.–2021. The mass loss signal in the West Antarctica and Antarctic Peninsula is dominant and clearly presented in the reconciled estimation and contributing solutions, regardless of estimation methods used and fluctuation of surface mass balance. Uncertainty and challenges remain in mass balance estimation in East Antarctica. This reconciled estimation approach can be extended and applied for improved mass balance estimation in the Greenland Ice Sheet and mountain glacier regions.

关键词： Antarctic Ice Sheet Ice mass loss acceleration Sea level rise Reconciled estimation

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2000~201.年太湖流域植被NPP与土壤水文要素的时空耦合研究

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长江流域资源与环境 2024年第6期33卷 1213-1227页

作者：张莉莉叶志成廖凯华刘亚朱青中国科学院南京地理与湖泊研究所中国科学院流域地理学重点实验室江苏南京210008 中国科学院大学南京学院江苏南京211135 江门市住房和城乡建设局广东江门529040

陆地生态系统碳水循环的耦合关系是当前全球变化研究的热点之一。但目前的研究主要集中在干旱与半干旱地区,湿润地区陆域碳水耦合机制尚不明晰。以太湖流域为研究区,基于遥感与GIS技术定量分析2000~201.年流域内植被净初级生产力(Net Pr... 详细信息

陆地生态系统碳水循环的耦合关系是当前全球变化研究的热点之一。但目前的研究主要集中在干旱与半干旱地区,湿润地区陆域碳水耦合机制尚不明晰。以太湖流域为研究区,基于遥感与GIS技术定量分析2000~201.年流域内植被净初级生产力(Net Primary Productivity,NPP)、土壤水分与蒸散发之间的时空耦合关系。结果表明,NPP与水文要素在不同时空尺度上的耦合关系显著不同:整时段月尺度内,流域蒸散发与NPP均为显著正相关关系,99.86%区域的土壤水分与NPP为负相关关系;年际尺度内,三者之间的相关性均减弱;季尺度内,82%区域土壤水分与NPP在春、夏、秋季为负相关关系,其中春季最为显著,这主要与土地覆被、植物生长期等的差异有关。此外,三者之间的相关性与地形因子关系密切,具体表现为随着坡度或海拔增加而减弱的趋势。最后,研究还发现基于整时段月尺度水文气象要素逐像元建立的随机森林模型(RF_All模型)能够对流域NPP进行较好地估算与预测(R^(2)=0.97,RMSE=4.1. gC m^(-2)a^(-1.,Bias=0.37 gC m^(-2)a^(-1.)。研究结论对于制定全球变化背景下太湖流域生态建设与可持续发展政策具有重要的理论指导意义。

关键词：太湖流域植被净初级生产力土壤水分耦合关系碳水循环

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丘陵山区水库沉积物-水界面磷源汇转换机制

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中国环境科学 2024年第4期44卷 2137-2147页

作者：谭立贤康得军刘成朱利钊申秋实陈开宁福州大学土木工程学院福建福州350000 中国科学院南京地理与湖泊所湖泊与环境国家重点实验室江苏南京210008 苏州科技大学江苏水处理技术与材料协同创新中心江苏苏州215009

以东南丘陵山区典型深水水库对河口水库为研究对象,开展了1.的原位调研,在主要水域内采集原位柱状沉积物样品,分析了沉积物磷的含量、赋存形态、间隙水剖面特征以及沉积物-水界面交换通量的时空变化特征.结果表明:对河口水库表层沉积物... 详细信息

以东南丘陵山区典型深水水库对河口水库为研究对象,开展了1.的原位调研,在主要水域内采集原位柱状沉积物样品,分析了沉积物磷的含量、赋存形态、间隙水剖面特征以及沉积物-水界面交换通量的时空变化特征.结果表明:对河口水库表层沉积物总磷(TP)含量变化范围为(470.8~1.1.0})mg/kg,平均值达到(688.4±1.6.48)mg/kg,呈现从上游至下游逐渐增加的趋势,下游坝前区域磷污染最为严重;沉积物中各形态磷含量大小顺序依次为:铝结合态磷(352.61.g/kg)>铁结合态磷(Fe-P)(98.1.mg/kg)>闭蓄态磷(88.77mg/kg)>钙结合态磷(72.42mg/kg)>有机磷(33.38mg/kg)>可交换态磷(1.64mg/kg).全库沉积物总体表现为磷的释放源,其中,秋季释放风险最高,冬季大部分区域沉积物从磷释放的源转变为汇;全年平均静态释放通量和扩散通量分别为(0.81.2.34)mg/(m^(2)·d)和(2.1.±3.47)mg/(m^(2)·d),2种方法所得全年磷释放量分别为1.92.3.67t,秋季释放量最大.铁结合态磷(Fe-P)的转化可能是控制沉积物-水界面磷源-汇转换的重要原因,由氧分层导致的沉积物厌氧及铁结合态磷(Fe-P)溶解释放将增加下层水体磷浓度,并在水体逆温后增加水柱总体磷浓度.在秋季大量磷释放之后,应更加关注随后的逆温对整个水体磷浓度的影响.

关键词：内源磷负荷沉积物-水界面磷通量对河口水库深水水库

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快速干湿气候振荡与中国古代大规模社会动荡

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Science Bulletin 2024年第3期69卷 314-318页

作者：孟先强张灿李根程鉴如蔡洁刘一兰霍利倪振宇张恩楼 State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 21008China Department of Earth Science University of CaliforniaSanta Barbara CA 93106USA Ministry of Education Key Laboratory of Surficial Geochemistry School of Earth Sciences and EngineeringNanjing UniversityNanjing 210023China

Climate conditions have long been acknowledged as a pivotal factor shaping regional productivity and influencing available resources,consequently playing an important role in driving social changes throughout human history[1.3].In ancient East Asia,the {1. agrarian civilization emerged around 4000 years ago in northern china,the region termed the“Central Plains”.This region faced recurrent episodes of large-scale social unrest,profoundly impacting the societal structure and dynastic cycles[4].These episodes were marked by extended civil peasant uprisings and/or incursions from northern nomadic tribes,often spanning decades to centuries[5].Both the agrarian societies in the Central Plains and the husbandry-based nomadic tribes in the vast northern grasslands,characterized by semi-arid and semi-humid climates,were notably sensitive to climate variations[6].

关键词： husbandry driving profound

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基于环境DNA技术和形态学鉴定的浮游植物多样性比较

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湖泊科学 2024年第5期36卷 1336-1352,I0001-I0003页

作者：程云山任艺晨席贻龙刘燕茹何虎范方威陈东宜李化炳安徽师范大学生态与环境学院芜湖241002 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室南京210008 中国科学院抚仙湖高原深水湖泊研究站玉溪652500 河北大学生命科学学院保定071002 中国科学院大学北京100049 中国科学院大学中丹学院北京100049

浮游植物是湖泊生态系统的重要组成部分,检测其物种多样性和群落组成对了解湖泊生态系统功能具有重要意义。近年来,环境DNA技术越来越多地被应用于生态学调查中;但对于浮游植物的多样性检测,该方法与传统形态学鉴定获得结果的一致性尚... 详细信息

浮游植物是湖泊生态系统的重要组成部分,检测其物种多样性和群落组成对了解湖泊生态系统功能具有重要意义。近年来,环境DNA技术越来越多地被应用于生态学调查中;但对于浮游植物的多样性检测,该方法与传统形态学鉴定获得结果的一致性尚不清楚,并且缺少基于环境DNA技术对真核浮游植物与原核浮游植物进行同时检测的研究。为此,本文比较研究了不同牧食强度下中宇宙实验体系中环境DNA技术和形态学鉴定在检测浮游植物(包括真核与原核浮游植物)物种多样性和群落组成上的异同。研究结果显示:(1.基于1.S rRNA基因的环境DNA技术与形态学鉴定获得的浮游植物alpha多样性(物种多样性和Shannon-Wiener多样性指数)在不同牧食强度下中宇宙实验体系中的变化趋势一致;(2)与形态学鉴定结果相比,基于1.S rRNA基因和1.S rRNA基因的环境DNA技术能够检测到更多的浮游植物种类,并且能够很好地展现不同处理组中浮游植物群落组成的差异;(3)基于1.S rRNA基因的环境DNA技术在浮游植物多样性检测上具有更高的精确性。尽管环境DNA技术在监测浮游植物生物量方面存在局限,但是其在浮游植物生物多样性检测方面比形态学鉴定具有显著的优势。本研究对环境DNA技术同时应用于真核和原核浮游植物检测进行了尝试,并证实了基于1.S rRNA基因的环境DNA技术在浮游植物物种多样性和群落组成检测中具有更高的分辨率和精确性,可提供更加丰富的数据,为在浮游植物多样性研究和水生态环境监测中推广使用环境DNA技术提供了依据。

关键词：环境DNA 形态学鉴定浮游植物多样性

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面向乡村振兴的中国传统村落保护与利用:挑战与展望

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自然资源学报 2024年第8期39卷 1735-1759页

作者：程叶青胡守庚杨忍陶伟李红波李伯华刘沛林魏峰群郭文唐承财顾康康唐雪琼海南师范大学地理与环境科学学院海口571158 中国地质大学(武汉)公共管理学院武汉430074 中山大学地理科学与规划学院广州510006 华南师范大学地理科学学院广州510631 南京师范大学地理科学学院南京210023 衡阳师范学院地理与旅游学院衡阳421002 长沙学院乡村振兴研究院长沙410022 陕西师范大学地理科学与旅游学院西安710119 南京农业大学人文与社会发展学院南京210095 北京第二外国语学院旅游科学学院北京100024 安徽建筑大学建筑与规划学院合肥230601 西南林业大学园林园艺学院昆明650224

传统村落保护与利用既是实现中国乡村振兴与中国式现代化的重大实践问题,也是地理学、社会学、规划学、经济学等多学科关注和融合交叉研究的热点议题。为系统探索中国传统村落保护与利用的理论认知、政策机制、实践经验和实现路径,特邀... 详细信息

传统村落保护与利用既是实现中国乡村振兴与中国式现代化的重大实践问题,也是地理学、社会学、规划学、经济学等多学科关注和融合交叉研究的热点议题。为系统探索中国传统村落保护与利用的理论认知、政策机制、实践经验和实现路径,特邀传统村落相关研究领域的1.位专家开展访谈。访谈主要从政策变迁与典型模式、宏观机制与核心主题、理论认知与实践路径三个视角,以中国传统村落保护与利用的理论认知到具体空间实践为主线,聚焦政策变迁、机制机理、经验模式、村落分类、产业转型、景观保护、有机更新、活态化、价值实现、主体驱动、空间治理和地方性等核心主体及其前沿性理论和实践问题进行深入对话。结合各位专家主要观点,新时期中国传统村落保护与利用需重点关注:(1.面向快速城镇化与现代化冲击的中国传统村落保护与利用的机制体制创新与实现路径。针对中国传统村落面临的现代文明与农耕文明的冲突和面向国家乡村振兴与中国式现代化的重大战略需求,需采用“自上而下”和“自下而上”相结合的方式,构建多元主体参与、农文旅有机融合和全面统筹协调的多元融合机制,通过挖掘传统村落内生增长因素和传统村落历史传承和文脉肌理、发挥村民主体作用、重塑传统村落公共文化空间体系和全方位数字孪生建模等,打造符合现代化发展与生态文明建设的人居环境和协同共建文化图谱。(2)面向乡村振兴与中国式现代化发展的中国传统村落保护与利用的核心主题与具体空间实践。聚焦传统村落分类施策、产业转型、有机更新、景观保护、活态化、价值实现、主体驱动、空间治理和地方性重构等核心主题,强化基于“生计、水、粮食、能源、土地”等关键要素耦合的传统村落划分及分类施策;关注传统村落产业转型时间维度、空间维度和属性维度的意义内涵及影响机制;重点围绕“保护发展对策、改善民生措施、活化利用策略”三大任务推进传统聚落有机更新;重视传统人居文化景观基因保护与内在精神价值挖掘和传统居住空间“活态”保护与利用及传统文化遗产“活化”;关注传统村落活态多样化,推进“共建共治共享”和美乡村建设;重视自然非人类要素和人类作为传统村落空间秩序建构和地方营造的重要作用及其能动性实践;关注传统文化底蕴挖掘和集约高效物质空间、塑造和谐舒适社会空间与保护传承传统文化空间打造;聚焦“生态、文化、主体、产业”等乡村要素,强化生态底色、传承发展地方文化和平衡地方、跨地方主体间的资本优势和地方性嵌入,以实现中国传统村落地方性重构和特色重塑。

关键词：乡村振兴传统村落保护与利用有机更新内生机制地方性重构

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维普期刊数据库

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Fruits of Scirpus(Cyperaceae) from the early Miocene of Weichang,Hebei Province,North china and their palaeoecological and palaeobiogeographical imp{1.cations

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Journal of Palaeogeography 2019年第2期8卷 142-149页

作者： Ping Lu Ya li Jian-Wei Zhang Xiao-Qing liang Yue-Zhuo li cheng-Sen li School of Chemistry BiologyEnvironmentYuxi Normal University CAS Key Laboratory of Economic Stratigraphy and Palaeogeography Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of Sciences Xinjiang institute of Ecology and {1. Chinese Academy of Sciences Qian-Dao-Hu Museum of Natural History State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of Sciences

This paper describes the fossil fruits of Scirpus weichangensis ***,*** the early Miocene of Guangyongfa Village,Weichang County,Hebei Province,North *** fossil fruits are obovate in shape and their lateral sections are plumply *** cell walls of the surface are *** persistent stout bristles have downward-directed barbellae in distal 1.*** occurrence of the fossil Scirpus indicates that Guangfayong was a wetland in the early *** on the fossil data,the genus likely originated in Western Siberia in the Oligocene,spread during the Miocene,and was finally distributed worldwide in the Holocene.

关键词： Scirpus Early Miocene Palaeoecology Palaeobiogeography Weichang

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Influence of Sediment Dredging on Chemical Forms and Release of Phosphorus

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Pedosphere 2008年第1期18卷 34-44页

作者： ZHONG Ji-cheng YOU Ben-Sheng FAN cheng-Xin li Bao ZHANG Lu DING Shi-Ming State Key Laboratory of Lake Science and Environment Nanjin9 Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 (China) Graduate School of the chinese academy of sciences Beijin9 100089 (China)

A laboratory experiment was carried out through a six-month incubation of undredged （control） and dredged cores to study the effect of sediment dredging on phosphorus （P） release from the sediment in the Taihu Lake. During the experiment, dredging the upper 30 cm layer could efficiently reduce the interstitial PO4^3-P concentration and different P forms in the sediment. The P fluxes of the undredged and dredged cores ranged from -5.1.to 3047.6 and -60.7 to 1..4μg·m^-2·d^-1. respectively. The fluxes of the dredged cores were generally lower than those of the control. Differences in the fluxes between the dredged and undredged cores were statistically significant （P 〈 0.05） from March to June 2006. The sediment P in the dredged cores had a lower release potential than that in the control. Dredging can be considered as a useful measure for rehabilitating the aquatic ecosystem after the external P loading in the Talhu Lake catchment was efficiently reduced.

关键词： phosphorus forms phosphorous release sediment dredging Taihu Lake

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