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A Framework of environmental modelling and Information Sharing for Urban Air Pollution Control and Management

Journal of China University of Mining and Technology 2007年第2期17卷 172-178页

作者： LIU Gang-jun FU Er-jiang WANG Yun-jia ZHANG Ke-fei HAN Bao-ping ARROWSMITH Colin School of Mathematical and Geospatial Science RMIT University Melbourne Victoria 3000 Australia School of Environment Science and Spatial Informatics China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

More effective environmental pollution control and management are needed due to the increasing environ-mental impacts from a range of human activities and the growing public demands for a better living environment. Urban air pollution is a serious environmental issue that poses adverse impacts on the health of people and the environment in most metropolitan areas. In this paper,we propose a geoinformatics augmented framework of environmental modelling and information sharing for supporting effective urban air pollution control and management. This framework is out-lined in terms of its key components and processes including: 1) an integrated,adaptive network of sensors for envi-ronmental monitoring; 2) a set of distributed,interoperable databases for data management; 3) a set of intelligent,robust algorithms and models for environmental modelling; 4) a set of flexible,efficient user interfaces for data access and in-formation sharing; and 5) a reliable,high capacity,high performance computing and communication infrastructure for integrating and supporting other framework components and processes.

关键词： environmental modelling information sharing urban air pollution geoinformatics

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SCALE AND TIME EFFECTS ON MATHEMATICAL MODELS FOR TRANSPORT IN THE ENVIRONMENT

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Applied Mathematics(A Journal of Chinese Universities) 2007年第3期22卷 267-276页

作者： Su Ninghu School of Mathematics and Computational Science,Xiangtan University,Hunan 411105,China School of Earth and environmental Sciences,James Cook University,Cairns, Queensland 4870,Australia Department of Natural Resources and Water,Mareeba,Queensland 4880,Australia. School of Mathematics and Computational Science Xiangtan University Hunan China School of Earth and environmental Sciences James Cook University Cairns Australia Department of Natural Resources and Water Mareeba Australia

The purpose of this paper is to analyse mathematical models used in environmental modelling. Following a brief survey of the development in modelling scale- and time-dependent dispersion processes in the environment, this paper compares three similarity solutions, one of which is a solution of the generalized Feller equation （GF） with fractal parameters, and the other two for the newly-developed generalized Fokker-Planck equation （GFP）. The three solutions are derived with parameters having physical significance. Data from field experiments are used to verify the solutions. The analyses indicate that the solutions of both GF and GFP represent the physically meaningful natural processes, and simulate the realistic shapes of tracer breakthrough curves.

关键词： mathematical model environmental modelling generalized Feller equation generalized Fokker-Planck equation.

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A set of ecosystem service indicators for European grasslands based on botanical surveys

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Grassland Research 2024年第1期3卷 43-56页

作者： Simon Taugourdeau Frédérique Louault Alice Michelot-Antalik Samir Messad François Munoz Denis Bastianelli Pascal Carrère Sylvain Plantureux CIRAD UMR SELMETMontpellierFrance CIRAD INRAEInstitut AgroSELMETUniversitéMontpellierMontpellierFrance INRAE VetAgro Sup UREPUniversitéClermont AuvergneClermont-FerrandFrance INRAE LAEUniversitéde LorraineNancyFrance Laboratoire interdisciplinaire de physique Grenoble Alpes University HospitalGrenobleFrance

Background:Grasslands provide a wide range of ecosystem services(ESs).However,there is currently no method for easily diagnosing the level of ESs *** aim was to develop ES indicators based on botanical surveys,which are readily available data and integrative of grassland spatiotemporal ***:Based on academic knowledge and expertise,we identiﬁed several simple vegetation criteria that we aggregated using a multicriteria analysis tool to construct indicators of the level of ESs provided by *** this study,the indicators were calculated from over 2000 botanical surveys spread over a wide biogeographical ***:Analyses of correlation between the various indicators show that“forage supply”and“diversity conservation”were not correlated.“Forage availability”and“nitrogen availability for the vegetation”were positively linked together and negatively linked to the robustness of the plant community to extreme events.A temporal approach highlights that the“biodiversity conservation”score decreased from 1970 to 2010 and that“nitrogen availability for the vegetation”was lower in 1970 and 1980 than in 2000 and ***:These results show that our aggregation method based on a large data set of botanical surveys could be appropriate for studying temporal dynamics of ESs.

关键词： biodiversity conservation ecosystem resilience environmental modelling forage functional traits meadows nitrogen availability plant communities

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