中国科学院机构知识库网格系统: 检索

Information entropy and elasticity analysis of the land use structure change influencing eco-environmental quality in Qinghai-Tibet Plateau from 1990 to 2015 期刊论文 OAI收割
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2022, 页码: 17
作者: Zhang, Lina; Zhang, Hongqi; Xu, Erqi

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收藏 | 浏览/下载：20/0 | 提交时间：2022/09/21

Land use change Eco-environmental quality Index system Qinghai-Tibet Plateau Land use structure information entropy Regional heterogeneity

Information entropy and elasticity analysis of the land use structure change influencing eco-environmental quality in Qinghai-Tibet Plateau from 1990 to 2015 期刊论文 OAI收割
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2022, 页码: 17
作者: Zhang, Lina; Zhang, Hongqi; Xu, Erqi

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收藏 | 浏览/下载：6/0 | 提交时间：2022/09/21

Land use change Eco-environmental quality Index system Qinghai-Tibet Plateau Land use structure information entropy Regional heterogeneity

A three-dimensional software framework for environmental system monitoring and decision support in Poyang lake basin 期刊论文 OAI收割
EARTH SCIENCE INFORMATICS, 2020, 页码: 13
作者: Yan, Changqing; Rink, Karsten; Bilke, Lars; Zhao, Gang; Yue, Tianxiang

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收藏 | 浏览/下载：27/0 | 提交时间：2021/07/09

Environmental information system Intuitive visualization Poyang lake basin Unity 3D Data layer integration

食用蔬菜能吸收和积累微塑料 期刊论文 OAI收割
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

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收藏 | 浏览/下载：149/0 | 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.

Identifying Environmental Risk Factors of Cholera in a Coastal Area with Geospatial Technologies 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2015, 卷号: 12, 期号: 1, 页码: 25-31
作者: Xu, Min; Cao, Chunxiang; Wang, Duochun; Kan, Biao

收藏 | 浏览/下载：18/0 | 提交时间：2016/04/20

cholera environmental factors remote sensing geographic information system (GIS) spatial analysis

An Integrated System for Regional Environmental Monitoring and Management Based on Internet of Things SCI/SSCI论文 OAI收割
2014
Fang S. F.; Xu L. D.; Zhu Y. Q.; Ahati J.; Pei H.; Yan J. W.; Liu Z. H.

收藏 | 浏览/下载：43/0 | 提交时间：2014/12/24

Big data climate change cloud computing enterprise systems environmental monitoring and management e-Science geoinformatics industrial informatics Internet of Things (IoT) system integration information-systems service workflow design architecture framework mobile iot

Autocollimation form dual-frequency laser diffraction grating interferometer design and analysis (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Wang C.-G.

收藏 | 浏览/下载：39/0 | 提交时间：2013/03/25

Propose a new measurement system of autocollimation form laser grating heterodyne interferometer. Take grating diffraction and polarization optics as theoretical foundation second furthermore combined with electronics knowledge to analyze the system. First make use of autocollimation diffraction of grating measurement information obtained by dual-frequency laser belongs to ac signal the interferometer measurement system take grating pitch as measuring datum the structure is simple possess great gain and high signal-noise ratio therefore stable completely overcome the disadvantages of DC level drift caused by light intensity variation of single-frequency laser system can achieve nanometer resolution. 2010 IEEE. reduce the impact of environmental factors easy to install and debug measurement error is small

R&D of comprehensive evaluation system of ecological environment in Tarim River basin 会议论文 OAI收割
2010 International Conference on Management and Service Science, MASS, Wuhan, China, 2010
Bao; An-Ming1; 2; Liu; Hai-Long3; Chen; Yun-Hao1; Xi2

收藏 | 浏览/下载：35/0 | 提交时间：2011/08/23

Arid regions - Degradation - Ecology - Information systems - Management science - Monitoring - Risk analysis - Risk assessment - Rivers - Vegetation - Watersheds - Analysis and evaluation - Arid area - Comprehensive evaluation system - Current situation - Degradation index - Density index - Ecological environments - Ecological risk assessment - Ecological risks - Ecological water demand - Environment quality - Environmental information systems - Evaluation system - Land degradation - Landscape ecology - Natural vegetation - Phreatic - Pollution loads - Professional analysis - Research and development - Restoration index - Risk indices - System building - System functions - Tarim River basin - Theoretical study - Vegetation coverage - Water regulation

医学地理和环境健康研究的主要领域与进展 中文期刊论文 OAI收割
2010
作者: 李永华; 王五一; 李海蓉; 杨林生

收藏 | 浏览/下载：27/0 | 提交时间：2012/05/19

medical geography environmental health global environment change health risk assessment geographical information system

ArcObjects-based eco-environmental data management information system for Three Gorges Project 会议论文 OAI收割
Itcs: 2009 International Conference on Information Technology and Computer Science, Proceedings, Vol 2, Proceedings, Los Alamitos
Zhu Liang; Zhou Yue-min; Wu Bing-fang; Luo Zhi-min

收藏 | 浏览/下载：25/0 | 提交时间：2014/12/07

Three Gorges information system ArcObjects MIS eco-environmental