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12..6～12..1 GHz基波压控振荡器设计

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浙江大学学报（工学版） 2018年第9期52卷 1788-1795页

作者：苏国东孙玲玲王翔王尊峰张胜洲雷宇超浙江大学电气工程学院超大规模集成电路设计研究所浙江杭州310027 杭州电子科技大学教育部射频电路与系统重点实验室浙江杭州310018 中国电子科技集团公司第41研究所山东青岛255666

采用65 nm CMOS工艺,设计一款基波压控振荡器(VCO).采用负阻单元的寄生电容与用户自定义电感形成VCO的电感-电容(LC)谐振网络.采用交叉耦合对管作为VCO的负阻单元,维持VCO的稳定输出信号.通过控制尾电流管的偏置电压大小调节交叉耦合管... 详细信息

采用65 nm CMOS工艺,设计一款基波压控振荡器(VCO).采用负阻单元的寄生电容与用户自定义电感形成VCO的电感-电容(LC)谐振网络.采用交叉耦合对管作为VCO的负阻单元,维持VCO的稳定输出信号.通过控制尾电流管的偏置电压大小调节交叉耦合管的寄生电容,从而实现输出频率的调谐. VCO输出缓冲器(buffer)采用共源-共栅(Cascode)结构以减小负载电阻对电路振荡的影响.所设计的片上变压器实现了差分信号转单端信号功能,并与传输线、地-信号-地(GSG)焊盘实现了VCO输出匹配.测试结果表明,电路的输出频率范围为12..6~12..1 GHz,调谐范围为1.5 GHz.当电路工作频率为12..2.GHz时,输出功率为–2..8 dBm,偏频为1 MHz处相位噪声的仿真值为–86.3 dBc/Hz.该电路的芯片面积为405μm×440μm.

关键词：压控振荡器(VCO) LC谐振槽交叉耦合对管共源共栅结构片上变压器传输线 GSG焊盘

贝类中GⅠ、GⅡ诺如病毒快速检测与分群方法的建立

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中国人兽共患病学报 2019年第10期35卷 909-914页

作者：苏来金赵峰马丽萍周德庆青岛海洋科学与技术试点国家实验室海洋药物与生物制品功能实验室中国水产科学研究院黄海水产研究所青岛266071 温州市农业科学研究院温州325006 上海海洋大学食品学院上海201306

目的建立贝类中GⅠ、GⅡ诺如病毒快速检测与分群方法。方法对比分析6株主要流行的GⅠ、GⅡ诺如病毒及参考诺如病毒的基因序列,筛选保守区域引物,优化建立SYBR Green Ⅰ荧光定量检测与熔解曲线快速分群方法,并对实际样品检测验证。结果引... 详细信息

目的建立贝类中GⅠ、GⅡ诺如病毒快速检测与分群方法。方法对比分析6株主要流行的GⅠ、GⅡ诺如病毒及参考诺如病毒的基因序列,筛选保守区域引物,优化建立SYBR Green Ⅰ荧光定量检测与熔解曲线快速分群方法,并对实际样品检测验证。结果引物P2.9/2.0可同时检测GⅠ、GⅡ诺如病毒,SYBR Green Ⅰ荧光定量检测方法在病毒浓度10^3~10^9 copies 之间呈现良好的线性关系( R^2.0.993, P 1),熔解曲线Tm值可区分GⅠ和GⅡ不同基因群的诺如病毒( F = 7 507.60 , P 12.份贝类样品阳性检出率5.83%,其中阳性结果测序鉴定与快速分群方法结论一致。结论该方法成本低、检测快速、分群准确,具有良好重复性,适用于贝类中GⅠ、GⅡ诺如病毒的快速检测与分群。

关键词：贝类诺如病毒 SYBR Green Ⅱ 快速检测分群

Anatomical variation of infra-pyloric artery origination： A prospective multicenter observational study (IPA-Origin)

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Chinese Journal of Cancer Research 2018年第5期30卷 500-507页

作者： Rulin Miao Jianjun Qu Zhengrong Li Daguang Wang Jiang Yu Weidong Zang Yong Li fenglin Liu Jian Zhang Wu Song Kai Ye su Yan Wei Wang Shuangyi Ren Lu Zang Changqing Jing Li Zhang Kuan Wang Weihua Fu Lin Fan Bin Liang Gang Zhao Jun Cai Li Yang Jiaming Zhu Jun You Kun Yang Qingxing Huang Zhaojian Niu Ning Ning Xingfeng Qiu Gang Ji feng Liang Hua Huang Chao Gao Fei Shan Shuangxi Li Yongning Jia Lianhai Zhang Xiangji Ying Yan Zhang Zhaode Bu Xiangqian su Gang Zhao Ziyu Li Jiafu Ji Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing) Gastrointestinal Cancer Center Peking University Cancer Hospital & Institute Beijing 100142 China Department of surgical Oncology Weifang People's Hospital Weifang 261000 China Department of General surgery the First Affiliated Hospital of Nanchang University Nanchang 330006 China Department of Gastrointestinal surgery the First Hospital of Jilin University Changehun 130021 China Department of General surgery Nanfang Hospital Southern Medical University Guangzhou 510515 China Department of Gastrointestinal Cancer surgery Fujian Provincial Cancer Hospital Fuzhou 350014 China Department of General surgery Guangdong General Hospital Guangdong Academy of Medical Sciences Guangzhou 510080 China Department of General surgery Zhongshan Hospital Fudan University Shanghai 200032 China Department of Gastrointestinal surgery Hangzhou First People's Hospital Hangzhou 310006 China Department of Gastrointestinal surgery the First Affiliated Hospital Sun Yat-sen University Guangzhou 510080 China Department of surgical Oncology the Second Affiliated Hospital of Fujian Medical University Quanzhou 362000 China Department of surgical Oncology Affiliated Hospital of Qinghai University Xining 810001 China Department of Gastrointestinal surgery Guangdong Provincial Hospital of Chinese Medicine Guangzhou 510120 China Department of General surgery the Second Hospital of Dalian Medical University Dalian 116023 China Department of General surgery Shanghai Ruijin Hospital Shanghai Jiaotong University School of Medicine Shanghai 200025 China Department of Gastrointestinal surgery Shandong Provincial Hospital Affiliated to Shandong University Jinan 250021 China Department of Gastrointestinal surgery Harbin Medical University Cancer Hospital Harbin 150081 China Department of General surgery Tianjin Medical University General Hospital Tianjin 300052 China Department of General surgery the Firs

Objective： Infra-pyloric artery （IPA） is an important anatomical landmark in treatment of gastric cancer and is the key vessel for pylorus-preserving gastrectomy and subgroup of infra-pyloric lymph nodes. However, its anatomical variation is not thoroughly understood. Our study aimed to clarify the origination of the IPA. Methods： We did this prospective, multicenter, open-label, observational study at gastric surgery departments of 34 hospitals in{2.. Gastric cancer patients aged 18 years or older and scheduled to undergo elective total or distal gastrectomy were assigned. during the surgery, IPA dissecting and exposing the origination point with photographs or video clips were required. The primary outcome was the origination of the IPA. Analysis of variance, χ2.tests and Fisher＇s tests were used to analyze the differences between groups. The study is registered at *** （No. NCT030712.7）. Results： Between May 8 and July 31, 2.17, 42. patients were assigned for the study, and 419 （97.7%） patients had the IPA dissected and recorded through photograph or video and were included in the primary outcome analysis. The median age was 62.years old, and 73.7% were male. Among the patients, 78.5% received laparoscopic surgery. Single IPA origination was identified in 398 （95.0%） patients, including gastroduodenal artery （GDA） in 154 （36.8%） patients, anterior superior pancreaticoduodenal artery （ASPDA） in 130 （31.0%） patients, and right gastroepiploic artery （RGEA） in 114 （2..2.） patients. Fifteen （3.6%） patients were identified with multiple IPA and 6 （1.4%） patients were identified as IPA absence. The differences in the distribution of surgical approach （P=0.003） and geographic area （P=0.030） were statistically significant. No difference was shown in sex, age, gastrectomy type, tumor location, and clinical T, N and M stage. Conclusions： Our study found that the IPA originates from GDA, ASPDA and RGEA in similar proportions. Laparoscopic surgery may be more

关键词： Infra-pyloric artery origination anatomy gastric cancer

太原市采暖季PM2.5组分特征及重污染事件分析

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中国环境科学 2020年第7期40卷 2821-2828页

作者：倪登峰刘素曹力媛王杰高健解静芳郭英哲山西大学环境与资源学院山西太原030006 中国环境科学研究院北京100012 青岛华思环保科技有限公司山东青岛266199 太原市环境监测中心站山西太原030002 北京化工大学环境科学与工程系北京100029 山东大学环境研究院山东青岛266237

针对2.17~2.18年采暖季太原市PM2.5及其水溶性离子、碳质组分和无机元素开展在线观测,结合气象数据分析不同污染水平下的组分特征.分析表明,2.17~2.18年太原市采暖季细颗粒物主要化学成分为SO4^2.、NO3^-、NH4^+、Cl^-、Ca^2.、OC、EC,... 详细信息

针对2.17~2.18年采暖季太原市PM2.5及其水溶性离子、碳质组分和无机元素开展在线观测,结合气象数据分析不同污染水平下的组分特征.分析表明,2.17~2.18年太原市采暖季细颗粒物主要化学成分为SO4^2.、NO3^-、NH4^+、Cl^-、Ca^2.、OC、EC,且呈现OC>SO4^2.>NO3^->NH4^+>Cl^->Ca^2.>EC的趋势,随污染水平增长最多的是二次无机物;优良、轻度污染和重污染3种污染水平下OC、EC相关系数分别为0.69、0.66、0.55,N/S分别为1.06、1.2.、0.93,表明随着污染水平的提高,OC和EC的来源一致性逐步变差,且排放源虽仍处于氮排放源(移动源和工业源)和硫排放源(燃煤源)的共同控制,但硫排放源贡献率显著升高.重污染事件分析表明太原市重污染应对过程中不仅需要加强机动车、工业源等污染源的管控,更需要重点加强燃煤管控.

关键词：太原 PM2.5 采暖季组分特征重污染

冷藏和冰藏条件下大菱鲆品质变化与蛋白质氧化相关性

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食品与发酵工业 2019年第22期45卷 213-219页

作者：邹朝阳赵峰欧帅苏志卫牟伟丽刘萌周德庆上海海洋大学食品学院上海201306 中国水产科学研究院黄海水产研究所青岛海洋科学与技术试点国家实验室海洋药物与生物制品功能实验室山东青岛266071 青岛益和兴食品有限公司山东青岛266000 蓬莱汇洋食品有限公司山东蓬莱265600

为探明大菱鲆在贮藏过程中肌肉品质变化与蛋白质氧化的关系,研究了4℃冷藏和0℃冰藏条件下大菱鲆鱼肉蛋白质氧化指标和品质指标随贮藏时间的变化,并进行了相关性分析。结果显示,随着贮藏时间的延长,2.样品的持水性、表面疏水性以及羰... 详细信息

为探明大菱鲆在贮藏过程中肌肉品质变化与蛋白质氧化的关系,研究了4℃冷藏和0℃冰藏条件下大菱鲆鱼肉蛋白质氧化指标和品质指标随贮藏时间的变化,并进行了相关性分析。结果显示,随着贮藏时间的延长,2.样品的持水性、表面疏水性以及羰基与二硫键含量呈上升趋势,而感官评分、质构指标和总巯基含量均呈下降趋势。综合各项指标变化,冷藏和冰藏过程中大菱鲆鱼肉品质劣化程度随蛋白质氧化逐渐增加,且冷藏组品质劣化和蛋白质氧化的速度明显快于冰藏组;在相同贮藏条件下,大菱鲆鱼肉蛋白质氧化程度越高,其品质越差。通过相关性分析发现,在冷藏和冰藏条件下大菱鲆鱼肉蛋白质氧化指标与品质指标之间存在良好的相关性,贮藏过程中大菱鲆鱼肉品质变化与蛋白质氧化密切相关。

关键词：大菱鲆贮藏品质蛋白质氧化相关性

Evidence for particle acceleration approaching PeV energies in the W51 complex

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science Bulletin 2024年第18期69卷 2833-2841页

作者： LHAASO Collaboration Zhen Cao F.Aharonian Axikegu Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi W.Bian A.V.Bukevich Q.Cao W.Y.Cao Zhe Cao J.Chang J.F.Chang A.M.Chen E.S.Chen H.X.Chen Liang Chen Lin Chen Long Chen M.J.Chen M.L.Chen Q.H.Chen S.Chen S.H.Chen S.Z.Chen T.L.Chen Y.Chen N.Cheng Y.D.Cheng M.Y.Cui S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu X.Q.Dong K.K.duan J.H.Fan Y.Z.Fan J.Fang J.H.Fang K.Fang C.F.feng H.feng L.feng S.H.feng X.T.feng Y.feng Y.L.feng S.Gabici B.Gao C.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge L.S.Geng G.Giacinti G.H.Gong Q.B.Gou M.H.Gu F.L.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han M.Hasan H.H.He H.N.He J.Y.He Y.He Y.K.Hor B.W.Hou C.Hou X.Hou H.B.Hu Q.Hu S.C.Hu D.H.Huang T.Q.Huang W.J.Huang X.T.Huang X.Y.Huang Y.Huang X.L.Ji H.Y.Jia K.Jia K.Jiang X.W.Jiang Z.J.Jiang M.Jin M.M.Kang I.Karpikov D.Kuleshov K.Kurinov B.B.Li C.M.Li Cheng Li Cong Li D.Li F.Li H.B.Li H.C.Li Jian Li Jie Li K.Li S.D.Li W.L.Li W.L.Li X.R.Li Xin Li Y.Z.Li Zhe Li Zhuo Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu D.B.Liu H.Liu H.D.Liu J.Liu J.L.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.Liu Y.N.Liu Q.Luo Y.Luo H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao Z.Min W.Mitthumsiri H.J.Mu Y.C.Nan A.Neronov L.J.Ou P.Pattarakijwanich Z.Y.Pei J.C.Qi M.Y.Qi B.Q.Qiao J.J.Qin A.Raza D.Ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shchegolev X.D.Sheng F.W.Shu H.C.Song Yu.V.Stenkin V.Stepanov Y.su D.X.sun Q.N.sun X.N.sun Z.B.sun J.Takata P.H.T.Tam Q.W.Tang R.Tang Z.B.Tang W.W.Tian C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang J.C.Wang Kai Wang Kai Wang L.P.Wang L.Y.Wang P.H.Wang R.Wang W.Wang X.G.Wang X.Y.Wang Y.Wang Y.D.Wang Y.J.Wang Z.H.Wang Z.X.Wang Zhen Wang Zheng Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu Q.W.Wu S.Wu X.F.Wu Y.S.Wu S.Q.Xi J.Xia G.M.Xiang D.X.Xiao G.Xiao Y.L.Xin Y.Xing D.R.Xiong Z.Xiong D.L.Xu R.F.Xu R.X.Xu W.L.Xu L.Xue D.H.Yan J.Z.Yan T.Yan C.W.Yang C.Y.Yang F.Yang F.F.Yang L.L.Yang M.J.Yang R.Z.Yang W.X.Yang Y.H.Yao Z.G.Yao L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.Yue H.D.Zeng T.X.Zeng W.Zeng M.Zha B.B.Zhang F.Zhang H.Zhang 不详 Key Laboratory of Particle Astrophysics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of Chinese Academy of sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduChina dublin institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear Physics P.O.Box 103980Heidelberg 69029Germany School of Physical science and technology&School of Information science and technology Southwest Jiaotong UniversityChengdu 610031China School of Astronomy and Space science Nanjing UniversityNanjing 210023China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Tsung-Dao Lee institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China institute for Nuclear Research of Russian Academy of sciences Moscow 117312Russia Hebei Normal university Shijiazhuang 050024China university of science and {2. of china Hefei 230026China State Key Laboratory of Particle Detection and Electronics China Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China School of Physics and Astronomy Yunnan UniversityKunming 650091China Key Laboratory of Cosmic Rays(Tibet university) Ministry of EducationLhasa 850000China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Physics and Astronomy(Zhuhai)&School of Physics(Guangzhou)&Sino-French institute of Nuclear Engineering and technology(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina institute of Frontier and Interdisciplinary science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray emission from the W51 complex is widely acknowledged to be attributed to the interaction between the cosmic rays(CRs)accelerated by the shock of supernova remnant(SNR)W51C and the dense molecular clouds in the adjacent star-forming region,***,the maximum acceleration capability of W51C for CRs remains *** on observations con{2.cted with the Large High Altitude Air Shower Observatory(LHAASO),we report a significant detection ofγrays emanating from the W51 complex,with energies from 2.to 2.0 *** LHAASO measurements,for the first time,extend theγ-ray emission from the W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of *** combining the"π^(0)-decay bump"featured data from Fermi-LAT,the broadbandγ-ray spectrum of the W51 region can be well-characterized by a simple pp-collision *** observed spectral bending feature suggests an exponential cutoff at~400 TeV or a power-law break at~2.0 TeV in the CR proton spectrum,most likely providing the first evidence of SNRs serving as CR accelerators approaching the PeV ***,two young star clusters within W51B could also be theoretically viable to pro{2.ce the most energeticγrays observed by *** findings strongly support the presence of extreme CR accelerators within the W51 complex and provide new insights into the origin of Galactic CRs.

关键词： UHE c-ray Cosmic rays SNR W51C Star clusters

不同冻结方式对大菱鲆鱼片冻藏过程中品质变化的影响

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食品与发酵工业 2019年第24期45卷 188-195页

作者：欧帅赵峰邹朝阳刘萌王志牟伟丽苏志卫周德庆上海海洋大学食品学院上海201306 中国水产科学研究院黄海水产研究所青岛海洋科学与技术试点国家实验室海洋药物与生物制品功能实验室山东青岛266071 蓬莱汇洋食品有限公司山东蓬莱265600 青岛益和兴食品有限公司山东青岛266000

该文以鲜活大菱鲆为原料,研究了5种冻结方式处理对大菱鲆鱼片贮藏过程中品质变化的影响。对5种冻结方式(-2.℃冰箱冻结、-2.℃平板速冻、-30℃冰箱冻结、-30℃平板速冻、-90℃液氮速冻)处理的大菱鲆鱼片在-18℃冷库冻藏15周内的理化指... 详细信息

该文以鲜活大菱鲆为原料,研究了5种冻结方式处理对大菱鲆鱼片贮藏过程中品质变化的影响。对5种冻结方式(-2.℃冰箱冻结、-2.℃平板速冻、-30℃冰箱冻结、-30℃平板速冻、-90℃液氮速冻)处理的大菱鲆鱼片在-18℃冷库冻藏15周内的理化指标、质构特性和微观结构进行测定。结果表明,随着冻藏时间的延长,不同冻结方式处理的大菱鲆鱼片持水力、肌原纤维蛋白含量、活性巯基含量、Ca^2.-ATPase活性及质构特性均呈下降趋势;白度值、TBA值呈上升的趋势;pH呈先下降后上升趋势;微观组织结构不同程度劣化。经-90℃液氮速冻和平板速冻处理的大菱鲆鱼片品质劣化趋势显著低于或迟缓于冰箱冻结组,低温速冻在大菱鲆品质保鲜方面具有广阔的应用前景。

关键词：大菱鲆鱼片冻结方式肌原纤维蛋白品质分析

An updated Vegetation Map of china(1:1000000)

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science Bulletin 2020年第13期65卷 1125-1136,M0004页

作者： Yanjun su Qinghua Guo Tianyu Hu Hongcan Guan Shichao Jin Shazhou An Xuelin Chen Ke Guo Zhanqing Hao Yuanman Hu Yongmei Huang Mingxi Jiang Jiaxiang Li Zhenji Li Xiankun Li Xiaowei Li Cunzhu Liang Renlin Liu Qing Liu Hongwei Ni Shaolin Peng Zehao Shen Zhiyao Tang Xingjun Tian Xihua Wang Renqing Wang Zongqiang Xie Yingzhong Xie Xiaoniu Xu Xiaobo Yang Yongchuan Yang Lifei Yu Ming Yue feng Zhang Keping Ma State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China university of Chinese Academy of sciences Beijing 100049China College of Pratacultural and Environmental sciences Xinjiang Agricultural UniversityUrumqi 830052China College of Life science Northwest Normal UniversityLanzhou 730070China Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China College of Resources science and technology Beijing Normal UniversityBeijing 100875China Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical GardenChinese Academy of SciencesWuhan 430074China College of Forestry Central South University of Forestry&TechnologyChangsha 410004China College of Life sciences Xiamen UniversityXiamen 361005China Guangxi institute of Botany Chinese Academy of SciencesGuilin 541006China Agricultural College Ningxia UniversityYinchuan 750021China School of Ecology and Environment Inner Mongolia UniversityHohhot 010000China institute of Navel Orange School of Life and Environmental ScienceGannan Normal UniversityGanzhou 341000China Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China institute of Natural Resources and Ecology Heilongjiang Academy of SciencesHarbin 150040China State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources School of Life SciencesSun Yat-sen UniversityGuangzhou 510275China institute of Ecology College of Urban and Environmental Science and Key Laboratory of Earth Surface ProcessesPeking UniversityBeijing 100871China School of Life sciences Nanjing UniversityNanjing 210023China Zhejiang Tiantong Forest Ecosystem National Observation and Research St

Vegetation maps are important sources of information for biodiversity conservation,ecological studies,vegetation management and restoration,and national strategic decision *** current Vegetation Map of china(1:1000000)was generated by a team of more than 2.0 scientists in an effort that lasted over 2. years starting in the ***,the vegetation distribution of china has experienced drastic changes {2.ring the rapid development of china in the last three decades,and it urgently needs to be updated to better represent the distribution of current vegetation ***,we describe the process of updating the Vegetation Map of china(1:1000000)generated in the 1980s using a‘‘crowdsourcing-change detection-classification-expert knowledge"vegetation mapping strategy.A total of 2.3,02. field samples were collected,and 50 taxonomists were involved in the updating *** resulting updated map has 12.vegetation type groups,55 vegetation types/subtypes,and 866 vegetation formation/sub-formation *** overall accuracy and kappa coefficient of the updated map are 64.8%and 0.52.at the vegetation type group level,61%and 0.55 at the vegetation type/subtype level and 40%and 0.38 at the vegetation formation/sub-formation *** compared to the original map,the updated map showed that 3.3 million km^2.of vegetated areas of china have changed their vegetation type group {2.ring the past three decades {2.e to anthropogenic activities and climatic *** expect this updated map to benefit the understanding and management of china’s terrestrial ecosystems.

关键词： Vegetation map Crowdsource Remote sensing Update

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海州湾海洋牧场重金属的空间分布及来源分析

水生态学杂志 2023年第5期44卷 114-122页

作者：封苏兰李玉朱琳谢艺萱洪晨飞卢霞李向阳王雪江苏海洋大学海洋技术与测绘学院江苏连云港222005 中国水产科学研究院黄海水产研究所农业农村部海洋渔业可持续发展重点实验室山东省渔业资源与生态环境重点实验室山东青岛266071 苏州科技大学地理科学与测绘学院江苏苏州215009

为了解江苏连云港海州湾海洋牧场的环境状况,通过采集2.个站位的表层水体和沉积物样品,对海水和沉积物中的8种重金属元素(Cr、Ni、Cu、Zn、Pb、Cd、As、Hg)进行测定;采用物种敏感性分布法、地累积指数法和潜在生态风险指数法评估海州湾... 详细信息

为了解江苏连云港海州湾海洋牧场的环境状况,通过采集2.个站位的表层水体和沉积物样品,对海水和沉积物中的8种重金属元素(Cr、Ni、Cu、Zn、Pb、Cd、As、Hg)进行测定;采用物种敏感性分布法、地累积指数法和潜在生态风险指数法评估海州湾的重金属污染状况及生态风险程度,并结合PCA/APCS模型对沉积物重金属的可能来源进行定量分析,可为海洋污染防控和海水养殖绿色高质量发展提供科学依据。结果表明:(1)物种敏感度分布法评估认为海水中的As具有高生态风险,Cd、Cu和Zn处于中度生态风险;(2.综合生态风险指数发现海州湾海洋牧场沉积物中重金属处于中度生态风险状态,主要受到Cd与Hg的影响;(3)由受体模型定量分析可知,海洋牧场重金属污染的潜在来源主要包括养殖中产生的污染、陆源排污及2.09年以前的临河口排污,其中养殖产生的污染对Cu、Zn、Ni、Pb和Cr的贡献率大于50%,陆源排污对As和Cd的贡献率分别为40.33%和82.85%,而Hg主要受2.09年以前临河口排污的影响。

关键词：海洋牧场生态风险重金属污染物海州湾

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