spatial autocorrelation regional economy spatial cluster the
本文关键词:近25年来塔里木河流域区域经济空间关联及演化特征分析,由笔耕文化传播整理发布。
近25年来塔里木河流域区域经济空间关联及演化特征分析
Spatial autocorrelation of regional economy and dynamic evolution in Tarim River Basin during the last 25 years
[1] [2] [3] [4] [5]
QIAO Xu-ning, YANG De-gang , LU Peng, YANG Yong-ju, ZHANG Yu-fang ( 1 Xinjiang Institute of Ecology and Geography, CAS, Urumqi, Xinjiang 830011, China; 2 School of Survegi
[1]中国科学院新疆生态与地理研究所,新疆乌鲁木齐830011; [2]河南理工大学测绘与国土信息工程学院,河南焦作454003; [3]河南省科学院地理研究所,河南郑州450052
文章摘要:以塔里木河流域为研究对象,借助Arcgis8.5及Geoda等软件平台,引入空间自相关模型,对塔里木河流域42县(市)1980-2005年近25年的区域经济空间关联类型、动态演化特征及动力机制进行研究,结果表明:(1)25年来塔里木河流域经济全局空间自相关系数增长了近1.7倍,总体呈现出空间正相关特征,且为波动上升的动态过程,在5%的显著性水平下,经济在空间上表现为显著的正相关性。(2)局部区域空间自相关特征显著,区域经济显著负相关的区域逐渐消失,正相关显著区域日趋加强,最终演化为低-低及高-高两种类型区在东北和西南集中分布格局,且差距不断增大,各类型区域面积消长在起始,震荡和稳定三个阶段呈现出不同特点。(3)区域经济增长的近邻效应不断增强,2004年低-低和高-高两种类型区域面积是1980的1.66倍,但经济空间集聚效应主要是由于低-低区域面积的迅速增加所致。(4)工业化初期阶段,矿产资源条件和区位因素及交通条件两大因素是促进区域经济空间集聚与演化的动力。文章最后探讨了流域经济空间关联特点及演化特征对区域经济集聚扩散过程、区域政策选择、空间开发模式及区域协调发展等问题的影响。
Abstr:This paper uses a spatial statistics method based on the calculation of spatial autocorrelation as a possible approach for modeling and quantifying the distribution of regional economy in the Tarim River Basin. GIS and spatial statistics provide a useful way for describing the distribution of regional economy both spatially and temporally. In this paper, patterns of regional economy spatial relations and its evolution are analyzed in the Tarim River basin from 1980 to 2004. Here are some conclusions: (1) Global Spatial Autocorrelation Coefficient increased nearly 1. 7 times in Tarim River basin in recent 25 years. Spatial positive autocorrelation of regional economy is obvious, which shows a waving and rising feature. Economic growth showed spatial positive autocorrelation at 5 % significant level, which meant that areas having similar levels of economic development clustered easily. (2) Correlations of part areas are significant, but majorities are not. Areas of spatial negative autocorrelation are disappearing gradually, and areas of positive autocorrelation become intensifying more and more. Especially, agglomeration and diffusion characteristics of regional economy along the axis of the railway and highway in south Xinjiang were obvious from 1995, which speeds up the transfer of dominant resources from undeveloped regions to developed regions. Under the multiplier effect and circulation and accumulation effect, the gap of economy between two areas of low - low pattern and high - high pattern becomes larger and larger. As a result, areas of low - low pattern and high - high pattern become two-polar that locates in the southwest and northeast of the Tarim River basin. (3) Changes of four kinds of patterns
文章关键词:
Keyword::spatial autocorrelation regional economy spatial cluster the Tafim River Basin
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课题项目:中国科学院西部行动计划(KZCX2-XB2-03-03);中国科学院西部博士计划(XBBS200803)
本文关键词:近25年来塔里木河流域区域经济空间关联及演化特征分析,由笔耕文化传播整理发布。
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