<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          We have launched E-mail Alert service,subscribers can receive the latest catalogues free of charge

           
           
          You Are Here: Home > Research > Development Strategy and Regional Economy> What's New

          Development Strategy and Regional Economy

          From Urbanization to Urban Agglomeration
          -- Based on a comparative analysis of population density in four metropolitan areas(No. 80, 2017)

          2017-10-09

          By Zhuo Xian, Department of Development Strategy and Regional Economy, DRC & Chen Aoyun, Beijing Jiaotong University

          Research Report No. 80, 2017 (Total. 5155) 2017-7-24

          Abstract: This paper gives a comparison between population density of four metropolitan areas with the "center-radius" as the standardized statistical benchmark for metropolitan areas. The study results show that the resident population density in downtown areas of Beijing and Shanghai is higher than that of Tokyo and New York, whereas the population density in the fringes of the two cities is quite low, showing an imbalanced population distribution. At the same time, during the daytime, population distribution in Beijing and Shanghai is more imbalanced, as population density in downtown areas at daytime is much higher than that of the resident population density, mainly due to the separation between job and residential locations. The mismatch of public resources is an important reason leading to monocentric population aggregation in Beijing and Shanghai, industrial enterprises taking possession of residential and service industry areas, and the excessive agglomeration of education, health care and other public service resources which have strengthened the adsorption effect of the downtown areas. Therefore, it is necessary to balance the distribution of public service resources in the urban areas, adjust the inter-regional urban management system, implement the public transport-oriented development mode and optimize the spatial structure of land use.

          Key words: metropolitan areas, population density, population in the nighttime, population in the daytime

           
          主站蜘蛛池模板: 高清dvd碟片 生活片| 性一交一乱一乱一视频| 亚洲成av人在线播放无码| 精品国产精品午夜福利| 无码国产精品一区二区免费3P| 九九久久人妻精品一区色| 亚洲成人精品综合在线| 抽搐一进一出gif免费动态 | 国产成人精品三上悠亚久久| 亚洲男人的天堂在线观看| 免费A级毛片无码A∨蜜芽试看| 国产精品v片在线观看不卡| 国产性夜夜春夜夜爽| 日韩本精品一区二区三区| 欲色欲色天天天www| 亚洲 中文 欧美 日韩 在线| 91区国产福利在线观看午夜| 激情综合网激情五月伊人| 亚洲一区精品伊人久久| 国产免费又黄又爽又色毛 | 国产精品成| 精品天堂色吊丝一区二区| 国产成人综合色视频精品| 一区二区三区在线 | 欧洲| 亚洲成a人片77777kkkk| 亚洲最大在线精品| 极品一区二区三区水蜜桃| 巨胸不知火舞露双奶头无遮挡| 真实国产乱子伦视频| 久久久久中文字幕精品视频| 欧美自拍另类欧美综合图区| 国产av综合一区二区三区| 麻花传剧mv在线看免费| 久久香蕉国产线看观看猫咪av| 久久爱在线视频在线观看| 成人av亚洲男人色丁香| 亚洲精品美女一区二区| 色欲av久久一区二区三区久| 51妺嘿嘿午夜福利| 国产精品最新免费视频| 国产亚洲一二三区精品|