基于Mann-Kendall法的长三角城市集聚效应空间结构研究  

Analysis on the Spatial Structure of Urban Agglomeration Effect in Yangtze River Delta Region Based on Mann-Kendall Test

作　　者：刘磊 葛莹[1] 鲍倩[1] LIU Lei;GE Ying;BAO Qian(School of Earth Science and Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098

出　　处：《地理信息世界》2019年第2期37-42,共6页Geomatics World

基　　金：国家自然科学基金项目(41071347)资助

摘　　要：以长三角地区为研究区域,以制造业劳动力城市分布为研究对象,运用Ripley's K函数多尺度识别制造业劳动力空间集聚模式;并利用Mann-Kendall检验方法,查找制造业劳动力边际集聚突变的空间尺度,以此揭示长三角地区城市集聚效应的主要空间特征。发现主要有:①长三角地区制造业劳动力在空间上显著集聚,随着空间尺度的增加,集聚程度与空间尺度呈倒"U型"关系。当空间尺度为155 km时,长三角地区制造业劳动力集聚范围达到最大,此处城市间向心力和离心力实现均衡;②由Mann-Kendall检验结果可知,60 km是城市集聚效应间结构的突变点,即长三角地区地级市之间、地级市与直辖市间距离应不低于60 km,这种城市群结构将使得地级市下辖的县级市、县等既能享受城市集聚效应又能避免拥挤效应等不经济因素,具备较佳的发展条件;③在突变范围内,长三角地区城市集聚效应呈现"中心—外围"层级空间结构,以上海、苏州等中部地区城市为极核,带动周边城市发展,经济影响逐级向外递减。江苏北部、浙江南部城市集聚效应最小,表现出明显的梯度特征和地域差异性,这意味着长三角地区城市发展仍不均衡。This study aims to identify the spatial agglomeration pattern of the Yangtze River Delta(YRD)region in2010 using the Ripley’s K function,and reveal the major spatial characteristics of urban agglomeration effect through examining the mutation of manufacturing labor marginal agglomeration via Mann-Kendall test.The results show as:①The manufacturing labor of the YRD region spatially clumped significantly,and its agglomeration degree is in inverse U nonlinear relationship with the increase of spatial scale.The urban agglomeration effect shows the most influential once the spatial scale reaches 155 km,which indicate that the urban centripetal force and centrifugal force are in equilibrium.②60 km is the mutation point of the spatial structure of urban agglomeration.It implies the distance between prefecture-level city and municipality city should be more than 60 km to avoid the cravding,and share the function of agglomerated central cities.③The agglomeration effect of YRD region generally presents"core-periphery"structure in spatial.It decreases gradually from the central region such as Shanghai and Jiangsu to outside,and the urban agglomeration effect of northern Jiangsu,Southern Zhejiang is the minimum.This phenomenon reflects that the development of YRD region is still not equilibrium.

关 键 词：城市集聚效应 制造业劳动力 Ripley’s K函数 MANN-KENDALL检验 长三角地区 

分 类 号：F127[经济管理—世界经济]