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大地伦理视域下我国平原农业地区的殡葬改革
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作者 崔永和 《濮阳职业技术学院学报》 2010年第2期40-43,共4页
大地伦理是关注人地关系的环境伦理,在全球生态危机大背景下,作为世界农业大国的我国平原农业地区,如何在改善人与自然的关系、优化生态环境、保护耕地资源的原则下,积极规划和推进殡葬改革,逐步引导农民实施"树葬",以"... 大地伦理是关注人地关系的环境伦理,在全球生态危机大背景下,作为世界农业大国的我国平原农业地区,如何在改善人与自然的关系、优化生态环境、保护耕地资源的原则下,积极规划和推进殡葬改革,逐步引导农民实施"树葬",以"树葬"文化取代传统殡葬文化,中止浪费能源、污染环境的"火葬"方式,这无疑将是中国世代人和全人类的福祉。 展开更多
关键词 大地伦理 平原农业地区 “树葬” 殡葬改革
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Agriculture Development-induced Surface Albedo Changes and Climatic Implications Across Northeastern China 被引量:16
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作者 ZHANG Xuezhen WANG Wei-Chyung +2 位作者 FANG Xiuqi YE Yu ZHENG Jingyun 《Chinese Geographical Science》 SCIE CSCD 2012年第3期264-277,共14页
To improve the understandings on regional climatic effects of past human-induced land cover changes,the surface albedo changes caused by conversions from natural vegetation to cropland were estimated across northeaste... To improve the understandings on regional climatic effects of past human-induced land cover changes,the surface albedo changes caused by conversions from natural vegetation to cropland were estimated across northeastern China over the last 300 years,and its climatic effects were simulated by using the Weather Research and Forecasting (WRF) model.Essential natural vegetation records compiled from historical documents and regional optimal surface albedo dataset were used.The results show that the surface albedo decreased by 0.01-0.03 due to conversions from grassland to cropland in the Northeast China Plain and it increased by 0.005-0.015 due to conversions from forests to cropland in the surrounding mountains.As a consequence,in the Northeast China Plain,the surface net radiation increased by 4-8 W/m 2,2-5 W/m 2,and 1-3 W/m 2,and the climate was therefore warmed by 0.1℃-0.2℃、0.1℃-0.2℃、 0.1℃-0.3 ℃ in the spring,autumn and winter,respectively.In the surrounding mountain area,the net radiation decreased by less than 1.5 W/m 2,and the climate was therefore cooled too slight to be detected.In summer,effects of surface albedo changes on climate were closely associated with moisture dynamics,such as evapotranspiration and cloud,instead of being merely determined by surface radiation budget.The simulated summer climatic effects have large uncertainties.These findings demonstrate that surface albedo changes resulted in warming climate effects in the non-rainy seasons in Northeast China Plain through surface radiation processes while the climatic effects in summer could hardly be concluded so far. 展开更多
关键词 surface albedo land cover change climatic effects last 300 years northeastern China
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Measuring potential food productivity for different areas in Songnen Plain based on analytic hierarchy process
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作者 YAO Zuo-fang LIU Xing -tu +3 位作者 YANG Fei YAN Min-hua MENG Jun LIU Qiu-mei 《Ecological Economy》 2010年第2期161-167,共7页
The improved analytic hierachy process method was utilized in this paper,and a variety of factors influencing the food production were classified into several interrelated orderly objectives layers;based on the works ... The improved analytic hierachy process method was utilized in this paper,and a variety of factors influencing the food production were classified into several interrelated orderly objectives layers;based on the works above,this paper made an scientific assessment on the influencing factors of food production and production potential of the various regions in the Songnen Plain.The weights and composite indices were calculated with the method of solving weight by AHP's accumulation factor sequence evaluating data,and were processed by single-level sorting and general sorting.The result showed that,the region of Changchun had the biggest potential for improving food production,but smallest for Heihe region.The key reason for the food production discrepancy of a variety of regions in Songnen Plain is the differences in scale of production and climatic conditions,the weight coefficients of which are 0.3654 and 0.2742;however,the weight coefficients of agricultural science and technology investment is very low just 0.1703,which should be increasted in the future. 展开更多
关键词 Analytic hierarchy process Accumulation factor Food productivity potential
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