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基于多源遙感數(shù)據(jù)的淮河流域城鎮(zhèn)擴張研究
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國家自然科學(xué)基金項目(41401171)和教育部人文社科基金項目(14YJCZH028)


Urban Expansion of Huaihe River Basin Based on Multi-source Remote Sensing Data
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    摘要:

    城鎮(zhèn)是人類社會發(fā)展過程在空間上的重要表現(xiàn)形式,,其空間格局與演變是城鎮(zhèn)研究的熱點問題,?;春恿饔蚴侵袊擎?zhèn)體系的南北過渡地區(qū),,研究這一自然地理單元內(nèi)城鎮(zhèn)擴張過程,視角獨特,。為客觀,、快速、準(zhǔn)確地重建不同時間序列上淮河流域城鎮(zhèn)擴張過程,,在DMSP/OLS數(shù)據(jù),、SPOT-VGT數(shù)據(jù)、Landsat ETM+數(shù)據(jù)等多〖JP2〗源遙感數(shù)據(jù)的基礎(chǔ)上,,提出“DMSP/OLS夜間燈光數(shù)據(jù)相互校正—NDVI數(shù)據(jù)重建—流域城鎮(zhèn)信息提取—流域城鎮(zhèn)擴張分析”的研究思路,,并運用該思路分析淮河流域從1998年至2013年16年間的城鎮(zhèn)擴張過程。從城市面積,、擴張強度,、擴張動態(tài)度、擴張形態(tài)4方面分析了城市擴張規(guī)律,。研究發(fā)現(xiàn):淮河流域整體與各省擴張基本屬于低速擴張型與中速擴張型,;淮河流域城鎮(zhèn)分布仍較為分散,未形成完整的城市群或城鎮(zhèn)體系;這一時期城市擴張時空發(fā)展不均衡,。

    Abstract:

    In order to grasp the urban expansion process in different temporal sequences objectively, rapidly and accurately, DMSP/OLS data, SPOT-VGT data, Landsat ETM+ data, DEM Data and social and economic statistics data were used to rebuild the urban expansion process. Two methods were selected to extract urban areas in Huaihe River Basin (HRB), one was threshold value method, the other was support vector machine (SVM) classification method. The results of two methods were compared with urban areas extracted from Landsat ETM+data and the result of SVM classification method which accuracy above 80% was proved to be more precise both in spatial form and accuracy estimation of urban areas. The urban areas in HRB for the year 1998, 2001, 2004, 2007, 2010 and 2013 were extracted using SVM classification method. And there were four features of the extracted urban areas calculated and analyzed to understand the dynamism of urban areas in HRB, including the extended area, urbanization intensive index (UII), extended dynamic degree and spatial pattern. The extended urban areas from 2001 to 2013 of HRB approximately showed a linear growth. UII illustrated that there were still a large number of rural areas to be developed in HRB. The extended dynamic degree stated that the urban areas expanded in a medium speed. The spatial pattern and the spatial metric revealed that there was no central city in HRB and the density of cities was not very high.

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樊勇,朱曦,張圣笛,何宗宜,楊剛.基于多源遙感數(shù)據(jù)的淮河流域城鎮(zhèn)擴張研究[J].農(nóng)業(yè)機械學(xué)報,2016,47(11):252-261. Fan Yong, Zhu Xi, Zhang Shengdi, He Zongyi, Yang Gang. Urban Expansion of Huaihe River Basin Based on Multi-source Remote Sensing Data[J]. Transactions of the Chinese Society for Agricultural Machinery,2016,47(11):252-261.

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  • 收稿日期:2016-08-03
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  • 在線發(fā)布日期: 2016-11-10
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