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Combining spatial modelling and radar to identify and protect avian migratory hot-spots

Current Zoology 2014年第5期60卷 680-691页

作者： Mark DESHOLM Rashpal GILL Thomas BOVITH Anthony D. FOX Department of Bioscience Aarhus University Kalo Grenavej 14 8410 Ronde Denmark BirdLife Denmark Vesterbrogade 140 1620 Copenhagen V Denmark Research Department Danish Meteorological Institute Lyngbyvej 100 2100 Copenhagen O Denmark

Migrating landbirds are known to follow coast lines and concentrate on peninsulas prior to crossing water bodies, es- pecially during daylight but also at night, creating enhanced potential collision hazards with man-made objects. Knowing where these avian migration ＂hot-spots＂ occur in time and space is vital to improve flight safety and inform the spatial planning process （e.g. environmental assessments for offshore windfarms）. We developed a simple spatial model to identify avian migration hot- spots in coastal areas based on prevailing migration orientation and coastline features known, from visual and radar observations, to concentrate migrating landbirds around land masses. Regional scale model validation was achieved by combining nocturnal passerine movement data gathered from two tier radar coverage （long-range dual-polarization Doppler weather radar and short- range marine surveillance radar） and standardised bird ringing. Applied on a national scale, the model correctly identified the ten most important Danish coastal hot-spots for spring migrants and predicted the relative numbers of birds that concentrated at each site. These bird numbers corresponded well with historical observational data. Here, we provide a potential framework for the es- tablishment of the first three-dimensional avian airspace sanctuaries, which could contribute to more effective conservation of long-distance migratory birds [Current Zoology 60 （5）： 680-691, 2014].

关键词： Radar ornithology Migration Orientation Conservation spatial model

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Comparison of Design and spatial models Using P. radiata Data of Australia: a Case Study

Comparison of Design and Spatial Models Using P. radiata Dat...

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第二届中国林业学术大会——S2 功能基因组时代的林木遗传与改良

作者： B. Tier Arthur R. Gilmour Gregory W. Dutkowski Animal Genetic Breeding Unit University of New England Armidale NSW Orange Agricultural Institute Orange NSW 2800 School of Plant Science Tasmania University Hobart Tasmania

We applied spatial analytical models to compare with traditional design model using two progeny trials of Pinus radiata data set in Australia. The analysis showed that spatial model with two dimensions (AR1xAR1) was better than the design model. The spatial model with independent error (AR1η) was even better than the above two models. Also, there were significant impacts on the genetic variance when using combined model. The variograms of residuals and surface maps showed the spatial patterns presented in two sample sites. Combined model is recommended to enable improved analysis of experimental data, and provides abundant genetic and environmental information.

关键词： spatial model design model P. radiate spatial pattern

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modeling Lyme disease transmission

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Infectious Disease modelling 2017年第2期2卷 229-243页

作者： Yijun Lou Jianhong Wu Department of Applied Mathematics The Hong Kong Polytechnic UniversityKowloonHong Kong Department of Mathematics and Statistics York UniversityTorontoOntarioM3J 1P3Canada

Lyme disease,a typical tick-borne disease,imposes increasing global public health challenges.A growing body of theoretical models have been proposed to better understand various factors determining the disease risk,which not only enrich our understanding on the ecological cycle of disease transmission but also promote new theoretical developments on model formulation,analysis and *** this paper,we provide a review about the models and results we have obtained recently on modeling and analyzing Lyme disease transmission,with the purpose to highlight various aspects in the ecological cycle of disease transmission to be incorporated,including the growth of ticks with different stages in the life cycle,the seasonality,host diversity,spatial disease pattern due to host short distance movement and bird migration,co-infection with other tick-borne pathogens,and climate change impact.

关键词： Mathematical model Lyme disease Tick-borne disease Basic reproduction number Seasonality spatial model Biodiversity Co-infection Bird migration

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Small-area estimation of forest stand structure in Jalisco, Mexico

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Journal of Forestry Research 2009年第4期20卷 285-292,I0004页

作者： Robin M. Reich Celedonio Aguirre-Bravo Department of Forest Rangeland and Watershed Stewardship Colorado State University Fort Collins Rocky Mountain Research Station USDA Forest Service Fort Collins

Natural resource statistics are often unavailable for small ecological or economic regions and policymakers have to rely on state-level datasets to evaluate the status of their resources （i.e., forests, rangelands, grasslands, agriculture, etc.） at the regional or local level. These resources can be evaluated using small-area estimation techniques. However, it is unknown which small area technique produces the most valid and precise results. The reliability and accuracy of two methods, synthetic and regression estimators, used in smallarea analyses, were examined in this study. The two small-area analysis methods were applied to data from Jalisco＇s state-wide natural resource inventory to examine how well each technique predicted selected characteristics of forest stand structure. The regression method produced the most valid and precise estimates of forest stand characteristics at multiple geographical scales. Therefore, state and local resource managers should utilize the regression method unless appropriate auxiliary information is not available.

关键词： forest structure regression estimator synthetic estimator spatial model stratified random sampling satellite imagery inventory and monitoring

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Structural Vibration Control of the spatial Suspended Mass Pendulum

Structural Vibration Control of the Spatial Suspended Mass P...

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作者： Chen Huang Linsheng Huo State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology

Due to limitations of the simplified model of the suspended mass pendulum（SMP）,a spatial model is proposed in the *** kinetic equations of the host structure with a spatial SMP are *** numerical analysis is conducted to analyze spatial vibrations of the SMP and their influence on the structural *** the simulation results,it is found that spatial vibrations of the SMP can be simulated better through the spatial model.

关键词： Suspended Mass Pendulum spatial model spatial Vibration Nonlinear Analysis Sdof Structure

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Research on the Regional Industrial Competitiveness of Shandong Province Based on the spatial SSM & GIS

Research on the Regional Industrial Competitiveness of Shand...

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2011 International Conference on Information Management and Engineering(ICIME 2011)

作者： SHAN Bao-yan School of Civil Engineering Shandong Jianzhu University

ISBN: (纸本)9781612842387

By using the statistics of national economy with 19 industries of Shandong province in 2003 and 2008 , both shift - share analysis of the traditional model and spatial model were applied to analysis the industrial competitiveness of 17 cities in Shandong . The classical shift-share approach analyses the evolution of an economic magnitude between two periods identifying three components: a national effect, a sectoral effect and a competitive effect. The spatial shift-share approach analyses the evolution of an economic magnitude identifying three components: the national effect, industry mix neighboring regions-nation effect and the competitive neighboring regions effect. The results of the two models are below: Of all the three effects, the national effect is the most important to the economic growth of all the cities in Shandong, and its contribution rate are above 80%. The rate of the total economy and the industries of all the cities were decided by their original amount. The comprehensive benefit of industries structure of Jinan, Qingdao, Weifang, Zibo, Weihai, Liaocheng, Binzhou and Dezhou and their adjacent region are conducive to the city’s whole economic growth. The comprehensive benefits of industries structure of Heze, Rizhao and Jining and their adjacent areas are not conducive to the city’s whole economic growth. The industrial growth rate of Rizhao, Yantai, Linyi, Jinan, Weifang, Binzhou and Jining were faster than the province and its neighboring regions, and their competitiveness were becoming stronger between 2003 and 2008. The industrial growth rate of Liaocheng, Dongying, Heze, Laiwu, Qingdao, Weihai, Dezhou and Zibo were slower than the whole province and its neighboring regions, and their competitiveness were becoming weaker between 2003 and 2008.

关键词： Shift-Share Analysis spatial model Industry Competitiveness Geographic Information System Shandong Province

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中国制造业转移的机制、次序与空间模式

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产业经济 2015年第3期

作者：胡安俊孙久文

本文借助产业转移理论模型，提出了“核心区产业能否转移”“按什么次序转移”“以什么空间模式转移”三个假说。在此基础上，利用中国地级行政单元的三位数制造业数据对上述假说进行了检验。结果表明，中国制造业已经出现由东部向中西... 详细信息

本文借助产业转移理论模型，提出了“核心区产业能否转移”“按什么次序转移”“以什么空间模式转移”三个假说。在此基础上，利用中国地级行政单元的三位数制造业数据对上述假说进行了检验。结果表明，中国制造业已经出现由东部向中西部地区的大规模转移；在转移次序上，按照产业替代弹性的逆序展开。高替代弹性产业先转移，低替代弹性产业后转移；在空间模式上，低替代弹性产业呈现等级扩散模式，高替代弹性产业呈现扩展扩散模式。

关键词：制造业转移转移次序空间模式 manufacturing industry transfer transfer sequence spatial model

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省际竞争对中国农业的影响

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农业经济研究 2019年第8期

作者：龚斌磊张书睿

我国省际农业竞争存在负向空间溢出效应，对农业生产率产生了负向影响，这一消极影响随时间呈逐步扩大趋势，并在不同区域普遍存在。各省同构化的农业生产结构抑制了农业增长速度。我国农业发展应根据各省的资源禀赋，发挥比较优势、优... 详细信息

我国省际农业竞争存在负向空间溢出效应，对农业生产率产生了负向影响，这一消极影响随时间呈逐步扩大趋势，并在不同区域普遍存在。各省同构化的农业生产结构抑制了农业增长速度。我国农业发展应根据各省的资源禀赋，发挥比较优势、优化区域布局、鼓励差异化发展，从而减少负溢出效应和生产率损失，并通过提高教育水平、增加涉农财政支出、改善灌溉等基础设施条件，实现“乡村振兴”战略中的“产业兴旺”目标。

关键词：省际竞争中国农业全要素生产率溢出效应空间模型生产函数 interprovincial competition China's agriculture total factor productivity spillover effects spatial model production function

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美国城市蔓延之后的规划运动及其启示

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地理 2004年第6期

作者：于文波刘晓霞王竹

本文以对我国城市规划的借鉴和启示为目的，探索性的从社会历史视角分析了导致美国城市蔓延的原由，并述评了美国各界针对蔓延问题引发全面反思，和在规划界形成的目前具有广泛影响力的“聪明增长”、“新都市主义”和“可持续发展”等... 详细信息

本文以对我国城市规划的借鉴和启示为目的，探索性的从社会历史视角分析了导致美国城市蔓延的原由，并述评了美国各界针对蔓延问题引发全面反思，和在规划界形成的目前具有广泛影响力的“聪明增长”、“新都市主义”和“可持续发展”等新规划思潮、主张及其反对者的批判观点。在此基础上，指出我国城市化过程中以“前车之鉴”谋求可持续发展，探索符合国情的城市空间模式的关键点：①警惕蔓延；②完善城市交通格局；③挖掘“单位制”的新生命力；④促进混合高强度土地利用和开发模式。

关键词：城市蔓延规划运动空间模式社会观念 urban sprawl planning movement spatial model social idea

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