【摘要】 运用物质流分析方法构建数学模型以描述1980—2008年我国磷资源代谢的动态变化情况,并通过比较1980年和2008年各个磷代谢环节的变化,分析我国磷资源代谢存在的缺陷。结果发现,我国磷资源代谢的动态变化特征可概括为:强开采、高消费、高排放和低循环;规模养殖和城市生活的废物处理不当以及小型磷矿的开采是导致我国磷资源不可持续使用的三大原因。最后提出若干对策,以期实现磷资源的科学管理。更多还原

【Abstract】 Material flow analysis is used in this paper to construct a mathematical model for the description of the dynamic change of phosphorous metabolism in China from 1980 to 2008.Then phosphorous metabolism in 1980 and 2008 are compared from the perspective of the whole life cycle to analyze the existing metabolic defects.The dynamic change traits of China’s phosphorous metabolism can be described as crazy exploitation,excessive consumption,high emission and little recycling.Unscientific waste disposal of scale breeding and city life,plus inefficient activities of small mines,should be mainly blamed for the unsustainability of phosphorous in China.Finally,several suggestions are proposed for the scientific management of China’s phosphorous resource.更多还原