基于能源消费的中国不同产业空间的碳足迹分析

Using energy consumption and land use data of each region of China in 2007, this paper established carbon emission and carbon footprint model based on energy consumption,and estimated the carbon emission amount of fossil energy and rural biomass energy of dif-ferent regions of China in 2007. Through matching the energy consumption items with indus-industrial-commercial space, transportation industrial space, fishery and water conservancy space, and other industrial space. Then the author analyzed the carbon emission intensity and carbon footprint of each industrial space. Finally, advices of decreasing industrial carbon footprint and optimizing industrial space pattern were put forward. The main conclusions are as following: (1) Total amount of carbon emission from energy consumption of China in 2007 was about 1.65 GtC, in which the proportion of carbon emission from fossil energy was 89%.(2) Carbon emission intensity of industrial space of China in 2007 was 1.98 t/hm<,2>, in which,dustrial space was 55.16 t/hm<,2> and 49.65 t/hm<,2> respectively, they were high-carbon-emission industrial spaces among others. (3) Carbon footprint caused by industrial activities of China in 2007 was 522.34x10<'>6 hm<,2>, which brought about ecological deficit of 28.69x10<'6> hm<,2>, which means that the productive lands were not sufficient to compensate for carbon footprint of industrial activities, and the compensating rate was 94.5%. As to the regional carbon footprint,several regions have ecological profit while others have not. In general, the present ecologi-cal deficit caused by industrial activities was small in 2007. (4) Per unit area carbon footprint trial-commercial space was the highest (17.5 hm<'2>/hm<'2>). The per unit area carbon footprint of different industrial spaces all presented a declining trend from east to west of China.     

城市基础设施建设筹资新模式——PFI

加强基础设施建设对改善居民生活水平、提高生活质量及提供舒适的人居环境、拉动内需有重要意义。基础设施的投资可以引发更大的投资需求,国外曾经做过统计,政府对基础设施投入1美元,引发的社会需求将达到 3.1～3.8 美元。但是,基础设施的投入需要大量的资金,周期长,传统的依靠政府投入只是杯水车薪,资金缺口成为日益严重的问题。另一方面,国有资金使用的低效率问题也亟待解决。将民间资本引入城镇的基础设施建设可以发挥其投入使用率高的优势,但要注意相应的融资体制和新的机制作保证。　　　　PFI(Private　FinanceInitiative)…     

河长制下江苏省实施河湖流域化管理的改革建议

水治理体系与治理能力现代化是生态文明建设以及国家治理现代化建设的重要内容。江苏在水治理体系与治理能力现代化方面始终走在全国前列,但随着生态文明建设的推进,河湖功能呈现多元化、生态化的发展趋势,现有河湖管理体制机制难以适应新时期的发展要求。在分析江苏省河湖管理存在问题的基础上,结合中央和省级政府的具体要求,从管理体制、河湖资源管理方式、考核督察机制、预警及信息共享机制、联合执法机制5个维度提出江苏河湖流域化管理体制机制完善建议。     

“新农人”对大城市郊区农业生态化的影响：以南京市为例

近年来,随着互联网电商平台的快速发展以及鼓励市民下乡等农民培育政策的大力支持,大城市郊区的新农人越来越多,推动了农业发展转型。不同类型农民对决策的偏好不同,新农人已经被认为是坚持运用生态原理务农的农民群体。然而,人们对新农人如何影响农业生态化的实证研究较少。因此,论文收集了农民采用不同种养行为的情况,并采用样本选择模型来探究新农人对农业生态化的影响。结果表明,新农人和传统农民对农业生态化的影响有显著的差异;新农人种养行为的生态化程度相对更高;新农人对采取不同生态化种养行为、提高种养行为的生态化程度都有显著积极的影响。农业生态化的差异可能是由农民对农业生态化生产的认知、对不同生态化种养行为的偏好和农业生产目标的差异造成。