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A simple method for estimating macroalgae area under clouds on MODIS imagery 期刊论文
FRONTIERS IN MARINE SCIENCE, 2022, 卷号: 9, 页码: 10
作者:  An, Deyu;  Xing, Qianguo;  Yu, Dingfeng;  Pan, Shunqi
收藏  |  浏览/下载：128/0  |  提交时间：2023/01/11
macroalgae blooms  MODIS imagery  clouds  method of estimating macroalgae area  multi-sensor images  
Effects of Spatial Resolution on the Satellite Observation of Floating Macroalgae Blooms 期刊论文
WATER, 2021, 卷号: 13, 期号: 13, 页码: 11
作者:  Wang, Xinhua;  Xing, Qianguo;  An, Deyu;  Meng, Ling;  Zheng, Xiangyang;  Jiang, Bo;  Liu, Hailong
浏览  |  Adobe PDF(4279Kb)  |  收藏  |  浏览/下载：510/206  |  提交时间：2021/10/21
floating macroalgae of Ulva prolifera  seasonal changes  macroalgae coverage  omission rate  satellite images  spatial resolution  the Yellow Sea  
食用蔬菜能吸收和积累微塑料 期刊论文
科学通报, 2019, 卷号: 64, 期号: 9, 页码: 928-934
作者:  李连祯;  周倩;  尹娜;  涂晨;  骆永明
收藏  |  浏览/下载：488/0  |  提交时间：2020/06/17
微塑料  生菜  聚苯乙烯微球  吸收  积累  健康风险  microplastics  lettuce  polystyrene microbeads  uptake  accumulation  human health risk  Microplastic (MP, 100 nm-5 mm) may present an attributable risk to ecosystem and human health, and its pollution has become a global environmental concern. Despite a wealth of information on the accumulation of MPs in aquatic species, there is no information on the uptake and accumulation of MPs by higher plants. Terrestrial edible plants are directly exposed to MPs when agricultural soil was applied with organic manure, sewage sludge as fertilizer or plastic mulching. In this paper, the uptake of two sizes of polystyrene (PS) microbeads (0.2 and 1.0 mum) and then their distribution and migration in an edible plant lettuce were firstly investigated based on laboratory experiments. We used fluorescent markers to track PS microbeads in plant tissues and found fluorescence to be a sensitive and reliable detection method. Sections from untreated control lettuce showed no autofluorescence. When roots were treated with fluorescently labeled PS microbeads, the microbeads could be identified by its fluorescence. Our main study investigated the uptake of 0.2 mum beads, as few luminescence signals were observed in lettuce roots for 1.0 mum beads in our experiment. We observed that 0.2 mum fluorescent microbeads were extracellularly trapped in the root cap mucilage (which is a highly hydrated polysaccharide) and a dark green tip (which was typical of lettuce roots exposed to label PS beads) was usually visible to the naked eye. Confocal images revealed that the PS luminescence signals were mainly located in the vascular system and on the cell walls of the cortex tissue of the roots, indicated that the beads passed through the intercellular space via the apoplastic transport system. Once inside the central cylinder, the 0.2 mum PS beads were transferred from the roots to the stems and leaves via the vascular system following the transpiration stream. We also observed that the PS beads adhered to one another and self-assembled systematically into grape-like and (chain) string-like clusters in the intercellular space of the root and stem vascular tissue of lettuce plant. In contrast to the root and stem, PS beads were dispersed in the leaf tissue. Here, for the first time we provide evidence of the adherence, uptake, accumulation, and translocation of submicrometer MPs within an edible plant. Our findings highlight the previously underappreciated human exposure pathway to MPs through the consumption of contaminated crops and emphasize the need for new management strategies to control the release of MPs waste products into the terrestrial environment. Ultimately, the potential impacts of low range sized MPs on food safety of crop plants and human health need to be urgently considered.  
Temperature and salinity effects in modeling the trajectory of the 2011 Penglai 19-3 oil spill 期刊论文
MARINE GEORESOURCES & GEOTECHNOLOGY, 2017, 卷号: 35, 期号: 7, 页码: 946-953
作者:  Wang, Yebao;  Zheng, Xiangyang;  Yu, Xiang;  Liu, Xin;  Liu, Xin(Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China)
收藏  |  浏览/下载：319/0  |  提交时间：2018/01/10
Hydrodynamic Model  Penglai 19-3 Oil Spill  Remote Sensing Images  Spilled Oil Trajectory  Temperature And Salinity  The Chinese Bohai Sea  
Dynamic analysis on coastline and sea reclamation in the region around bohai based on remote sensing images 会议论文
Remote Sensing and Modeling of Ecosystems for Sustainability XI, San Diego, CA, United states, August 18, 2014 - August 20, 2014
作者:  Liu, Xiangyang(1);  Gao, Zhiqiang(1,2);  Ning, Jicai(1);  Lu, Qingshui(1)
Adobe PDF(489Kb)  |  收藏  |  浏览/下载：675/247  |  提交时间：2015/08/10
Reclamation  Coastline  Coastline Changes  Different Structure  Remote Sensing And Gis  Remote Sensing Images  Sea Reclamations  Shandong Province  Visual Interpretation  
Research on construction of Web 3D-GIS based on Skyline 会议论文
Remote Sensing and Modeling of Ecosystems for Sustainability XI, San Diego, CA, United states, August 18, 2014 - August 20, 2014
作者:  Wang, Tingting(1);  Gao, Zhiqiang(2,3);  Ning, Jicai(2);  Wang, Tingting
Adobe PDF(386Kb)  |  收藏  |  浏览/下载：707/354  |  提交时间：2015/08/10
Three Dimensional Computer Graphics  3-d Visualization Technology  Javascript Programming  Landscape Model  Remote Sensing Images  Sketchup Software  Skyline  Threedimensional (3-d)  Web-gis  
Plant leaf detection using modified active shape models 期刊论文
BIOSYSTEMS ENGINEERING, 2013, 卷号: 116, 期号: 1, 页码: 23-35
作者:  Xia, Chunlei;  Lee, Jang-Myung;  Li, Yan;  Song, Yoo-Han;  Chung, Bu-Keun;  Chon, Tae-Soo;  Chon, TS (reprint author), Pusan Natl Univ, Dept Biol Sci, Pusan 609735, South Korea. tschon@pusan.ac.kr
Adobe PDF(2895Kb)  |  收藏  |  浏览/下载：1036/394  |  提交时间：2014/07/08
Recognition  Classification  Segmentation  Identification  Algorithm  Features  Images  
Spatial Statistical Analyses of Global Trends of Ultraviolet B Fluxes in the Continental United States 期刊论文
GISCIENCE & REMOTE SENSING, 2012, 卷号: 49, 期号: 5, 页码: 735-754
作者:  Gao, Zhiqiang;  Gao, Wei;  Chang, Ni-Bin
Adobe PDF(6240Kb)  |  收藏  |  浏览/下载：973/298  |  提交时间：2013/03/08
Ground-based Measurements  Ozone Column Retrieval  Uv  Radiation  Surface  Clouds  Aerosols  Images  
A New Data Transformation Method for Cbers-02b Multi-spectral Images 会议论文
Advanced Materials in Microwaves and Optics, AMMO2011, Bangkok, THAILAND, September 30, 2011 - October 1, 2011
Zhang, Chengwen; Tang, Jiakui; Mi, Sujuan; Zhao, Lijun; Li, Yongzhi; Yu, Xinju
Adobe PDF(5625Kb)  |  收藏  |  浏览/下载：1027/240  |  提交时间：2013/03/11
Remote Sensing  Lbv Transformation  Multi-spectral Images  Classification  Cbers-02b