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岷 江 上 游 人 口 特 征

胡志斌1;何兴元1;李月辉1;布仁仓1;王安鹏1,2   

  1. 1中国科学院沈阳应用生态研究所, 沈阳 110016;
    2东北大学信息科学与工程学院, 沈阳 110004
  • 收稿日期:2006-01-17 修回日期:2006-08-04 出版日期:2006-11-10 发布日期:2006-11-10

Population characteristics in upper reaches of Minjiang River

HU Zhibin1; HE Xingyuan1; LI Yuehui1; BU Rencang1;WANG Anpeng1,2   

  1. 1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2School of Information Science &Engineering, Northeastern University, Shenyang 110004, China
  • Received:2006-01-17 Revised:2006-08-04 Online:2006-11-10 Published:2006-11-10

摘要: 通过提取岷江上游5县1986~2003年统计年鉴的人口和经济数据,以研究区行政区划图(1∶250 000)为地理信息基础数据,在ArcGIS平台上,建立人口空间数据库,采用传统人口统计和GIS空间分析相结合的方法,对岷江上游5县的人口空间分布特征与变化以及影响其变化的因素进行了研究。结果表明,研究区是以藏族、羌族、回族等少数民族为主的聚居区, 其人口总量规模小、人口增长缓慢、人口密度偏小;人口的空间结构状况趋于不均衡化,人口再分布活力明显下降;人口重心从1950~2003年由北到南移动了6.30 km,反映出研究区经济发展良好的区域在南部(即汶川县)方向;影响人口分布的主要因素有河流、道路、海拔、土地的利用方式和经济吸引力等。

关键词: 营养盐, 营养盐限制, 黄海, 东海, 长江口

Abstract: By using the population and economic data extracted from the statistical yearbook of 1986-2003 and the data from national GIS database (1∶250 000), an ArcGIS-based spatial population database of five counties in theupper reaches of Min River was built, and the spatial population distributionand its affecting factors were studied by the combination of traditional statistics and GIS analysis. The results showed that the dominant minorities in the study area were Tibetan, Qiang and Han, with Smau Paewation size and thin density of population (0.38 4 million and 16.94 people·km-2 in 2003, respectively) and low growth rate. The spatial distribution of population tended to imbalance, and the redistribution index declined obviously. In the past 50 years, the center of papulation moved 6.30 km from north to south, indicating that the economy in the south area developed in good status. The spatial distribution of population was mainly affected by the distribution of rivers and roads, elevation, types of LUCC, and economic attraction.

Key words: Nutrient, Nutrient limitation, Yellow Sea, East China Sea, Changjiang River estuary