耕地中直接影响到粮食安全的是基本农田,实施耕地保护实质上就是实施基本农田保护。针对当前基本农田保护规划中存在的问题,以及本轮土地利用规划修编的特点和要求,考虑土地利用数据共享原则,对在基本农田保护规划中充分利用农用地分等...耕地中直接影响到粮食安全的是基本农田,实施耕地保护实质上就是实施基本农田保护。针对当前基本农田保护规划中存在的问题,以及本轮土地利用规划修编的特点和要求,考虑土地利用数据共享原则,对在基本农田保护规划中充分利用农用地分等成果进行了探讨,即在进行基本农田保护空间布局过程中,把农用地综合等作为一个重要因素加以考虑。在考虑粮食安全的基础上,再依据基本农田的内涵,建立了以基本农田保护规划决策模型为核心的技术方法。通过熵权系数法、理想点法与G IS技术的结合,基于M apbas ic编程并在M ap in fo平台上试验,建立了一套基本农田保护空间规划的技术路线,完成了从专业模型分析到规划图自动生成的全过程,实现了基本农田规划编制的决策支持和决策可视化,使规划成果更加科学合理。通过在山东大学的实证,取得了令人满意的结果。展开更多
Exposure to particulate matter with an aerodynamic diameter of less than 2.5 μm (PM2.5) may increase risk of lung cancer. The repetitive and broad-area coverage of satellites may allow atmospheric remote sensing to o...Exposure to particulate matter with an aerodynamic diameter of less than 2.5 μm (PM2.5) may increase risk of lung cancer. The repetitive and broad-area coverage of satellites may allow atmospheric remote sensing to offer a unique opportunity to monitor air quality and help fill air pollution data gaps that hinder efforts to study air pollution and protect public health. This geographical study explores if there is an association between PM2.5 and lung cancer mortality rate in the conterminous USA. Lung cancer (ICD-10 codes C34- C34) death count and population at risk by county were extracted for the period from 2001 to 2010 from the U.S. CDC WONDER online database. The 2001-2010 Global Annual Average PM2.5 Grids from MODIS and MISR Aerosol Optical Depth dataset was used to calculate a 10 year average PM2.5 pollution. Exploratory spatial data analyses, spatial regression (a spatial lag and a spatial error model), and spatially extended Bayesian Monte Carlo Markov Chain simulation found that there is a significant positive association between lung cancer mortality rate and PM2.5. The association would justify the need of further toxicological investigation of the biological mechanism of the adverse effect of the PM2.5 pollution on lung cancer. The Global Annual Average PM2.5 Grids from MODIS and MISR Aerosol Optical Depth dataset provides a continuous surface of concentrations of PM2.5 and is a useful data source for environmental health research.展开更多
文摘耕地中直接影响到粮食安全的是基本农田,实施耕地保护实质上就是实施基本农田保护。针对当前基本农田保护规划中存在的问题,以及本轮土地利用规划修编的特点和要求,考虑土地利用数据共享原则,对在基本农田保护规划中充分利用农用地分等成果进行了探讨,即在进行基本农田保护空间布局过程中,把农用地综合等作为一个重要因素加以考虑。在考虑粮食安全的基础上,再依据基本农田的内涵,建立了以基本农田保护规划决策模型为核心的技术方法。通过熵权系数法、理想点法与G IS技术的结合,基于M apbas ic编程并在M ap in fo平台上试验,建立了一套基本农田保护空间规划的技术路线,完成了从专业模型分析到规划图自动生成的全过程,实现了基本农田规划编制的决策支持和决策可视化,使规划成果更加科学合理。通过在山东大学的实证,取得了令人满意的结果。
文摘Exposure to particulate matter with an aerodynamic diameter of less than 2.5 μm (PM2.5) may increase risk of lung cancer. The repetitive and broad-area coverage of satellites may allow atmospheric remote sensing to offer a unique opportunity to monitor air quality and help fill air pollution data gaps that hinder efforts to study air pollution and protect public health. This geographical study explores if there is an association between PM2.5 and lung cancer mortality rate in the conterminous USA. Lung cancer (ICD-10 codes C34- C34) death count and population at risk by county were extracted for the period from 2001 to 2010 from the U.S. CDC WONDER online database. The 2001-2010 Global Annual Average PM2.5 Grids from MODIS and MISR Aerosol Optical Depth dataset was used to calculate a 10 year average PM2.5 pollution. Exploratory spatial data analyses, spatial regression (a spatial lag and a spatial error model), and spatially extended Bayesian Monte Carlo Markov Chain simulation found that there is a significant positive association between lung cancer mortality rate and PM2.5. The association would justify the need of further toxicological investigation of the biological mechanism of the adverse effect of the PM2.5 pollution on lung cancer. The Global Annual Average PM2.5 Grids from MODIS and MISR Aerosol Optical Depth dataset provides a continuous surface of concentrations of PM2.5 and is a useful data source for environmental health research.
