走向地变化科学--土地利用/覆被变化研究的新进展

研究目的综述国际近10年(1995-2004)来LUCC研究在研究领域、方法和理论上的进展,推动中国LUCC研究的持续深入.研究方法文献资料法、对比法.研究结论国际上LUCC研究除了体现在LUCC监测技术、驱动力、生态环境效应和建模研究等方面的进展外,在LUCC研究理论上也经历了非常大的突破,即IGBPⅡ于2003年提出的土地变化科学(LCS)--致力于减小人类与环境系统面对全球变化的脆弱性并实现它们的可持续性,土地变化科学正在走向范式研究.     

走向土地变化科学——土地利用/覆被变化研究的新进展

研究目的:综述国际近10年(1995-2004)来LUCC研究在研究领域、方法和理论上的进展,推动中国LUCC研究的持续深入。研究方法:文献资料法、对比法。研究结论:国际上LUCC研究除了体现在LUCC监测技术、驱动力、生态环境效应和建模研究等方面的进展外,在LUCC研究理论上也经历了非常大的突破,即IGBPⅡ于2003年提出的土地变化科学(LCS)——致力于减小人类与环境系统面对全球变化的脆弱性并实现它们的可持续性,土地变化科学正在走向范式研究。     

表面活性剂双水相的研究进展与应用

阴阳离子表面活性剂混合体系,在一定浓度及混合比范围内,可以形成两个互不相溶、平衡共存的双水相,称为表面活性剂双水相。文章对表面活性剂双水相的形成、萃取原理、相图与液晶结构的关系以及相界面的性质、应用方向等进行了综述,对双水相技术目前所存在的问题以及发展前景作了简要的论述。     

Inter-metropolitan regional migration galvanized by high-speed rail: A simulation analysis of the Linear Chuo Shinkansen line in Japan

The development of transportation infrastructure impacts migration, production, and other economic activities along with it. In this study, we conducted a multiregional computable general equilibrium simulation analysis to assess the effects that the proposed 2027 high-speed railway, the Linear Chuo Shinkansen in Japan, will have on population migration. The 47 prefectures ordained by the Japanese administrative unit were considered, and the simulation potential workforce population was taken as 110 million. The population is concentrated in the Tokyo metropolitan area. As per our simulation, once the proposed high-speed railway opens, “travel costs” (comprising time and the monetary costs of traveling) will decrease. This situation will stimulate economic activities and lead people to migrate to the prefectures where the economic environment improves. The results show that this development will ease extreme population concentration while simultaneously increasing employment and production values. However, additional analysis indicates that further development of the Linear Shinkansen to strengthen the current high-speed rail on the route to Tokaido will increase population concentration.