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基于多源多时相数据集的喀什市近70a城区空间扩展遥感研究

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使用民国34年(1945年)1∶1×104地形图、1968年CORONA影像及近期Landsat5和2015年GE影像数据,使用遥感技术以多元多时相遥感数据融合和GIS挖掘技术为支撑,采用等扇分析法和重心转移矩阵分析了喀什市70 a城市空间形态整体扩展特征,各方向上的扩展速度、强度以及空间重心转移的方向、强度。结果表明:1945-2015年间喀什市空间形态经历了带状扩展向团状扩展的转变,城市整体空间扩展强度不断加剧,空间扩展速度呈先上升后下降再上升的趋势,空间重心向东南方向绿洲腹地转移1009 m,侵占甚多绿洲耕地,城市空间扩展模式粗放,亟待调整。
Remote sensing study of urban spatial expansion in Kashgar City based on multisource and multi temporal datasets in the last 70 years
Based on 1:10000 topographic map (1945),CORONA (1968)and Landsat5 (2015)image data, the overall expansion characteristics of urban spatial form,the expansion speed and intensity in each direction,as well as direction and intensity of spatial barycenter transition of Kashgar City over the past 70 years are analyzed. The analysis has been supported by multisource remote sensing image data fusion and mining technology of GIS. The equal fan analysis method and barycenter transition matrix have been applied in this paper.The results show that:(1 )The spatial pattern of Kashgar City had changed from banded extension to round extension during the period of 1945 -2015;(2)the strength of the overall urban space extension has increased constantly;and (3) the space extension speed experiences rising,falling and going up again,and the spatial barycenter has trans-ferred to the southeast of the oasis hinderland about 1 009 m,and covered a great deal of farming land.Howev-er,the extensive mode of urban spatial growth must be adjusted and regulated.

Kashgar CityCORONAspatial expansionequal fan analysis methodbarycenter transition matrix

侯博展、陈蜀江、侯建楠、黄铁成、贾翔

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新疆师范大学 地理科学与旅游学院,新疆 乌鲁木齐830054

乌鲁木齐空间遥感应用研究所,新疆 乌鲁木齐830054

华中师范大学 城市与环境科学学院,湖北 武汉430079

喀什市 CORONA 空间扩展 等扇分析法 重心转移矩阵

国家自然科学基金新疆师范大学地理学博士点支撑学科开放课题基金

31460167XJNU-DL-201501

2016

冰川冻土
中国地理学会 中国科学院寒区旱区环境与工程研究所

冰川冻土

CSTPCDCSCD北大核心
影响因子:2.546
ISSN:1000-0240
年,卷(期):2016.38(3)
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