摘要
以新疆伊宁市2000、2005、2010、2015、2018年Landsat TM/ETM/OLI多时相卫星遥感数据为样本,利用GIS技术,采用最大似然法(MLC)对伊宁市土地利用进行分类,提取城市建成区范围,采用扩张速度指数(Expansion speed index,ESI)、扩张强度指数(Expansion intensity index,EII)、综合扩张程度指数(Expansion degree index,EDI)和标准差椭圆(Standard deviational ellipse,SDE)等指标分析伊宁市2000—2018年的城市空间扩展特征及其驱动力因素。结果表明,①2000—2018年伊宁市建设用地面积持续增加,共增加80.03 km2,为净增初期的2.7倍,研究区建设用地呈西北蔓延式扩张,2005—2010年间,建设用地扩展强度最大,城市化呈急剧扩张态势。②伊宁市建设用地的扩张主要是通过大面积的侵占耕地来实现,建成区扩张速度逐年提高,城市扩张呈先高速增长后缓慢扩张趋势。③伊宁市城市扩展受到自然及人文因素共同影响,自然因素限制了建设用地空间扩张范围,人文因素则是伊宁市城市扩张的直接驱动力。
Taking Yining city,Xinjiang province as an example,based on Maximum likelihood classifie(MLC)method with remote sensing images of 2000,2005,2010,2015 and 2018,the authors classified the land of Yining and extracted the urban proper to analyze the urban construction land expansion and spatial distribution in the past 19 years.Urban expansion indices,which included expansion speed index(ESI),expansion intensity index(EII),expansion degree index(EDI)and standard deviational ellipse(SDE),were used to quantitatively analyze temporal variations of construction expansion.The following results were obtained:①The construction land area of Yining city increased by 80.03 km2 and it was the 2.7 times of the initial urban from 2000 to 2018,According to the analysis of SDE,the construction land extended to the northwest and the urbanization showed a rapid expansion trend from 2000 to 2005.②During the period of 2000—2018,the construction land expansion of Yining city was mainly realized through occupying large areas of cultivated.In the growth of the construction of the city area,city expansion rate increase year by year,city expansion strongly expands and then the expansion tends to slow down.③The urban expansion of Yining city was affected by both natural and human factors.Natural factors affected the space scope of urban expansion,and human factors was the direct driving force for construction land changa in city expansion.
作者
赵禾苗
阿里木江·卡斯木
ZHAO He-miao;ALIMUJIANG·Kasimu(College of Geographical Science and Tourism,Xinjiang Normal University,Urumqi830054,China)
出处
《湖北农业科学》
2021年第14期109-116,共8页
Hubei Agricultural Sciences
基金
国家自然科学基金项目(41661037)。
关键词
监督分类
城市空间扩展
转移矩阵
伊宁市
supervised classification
urban spatial expansion
transition matric
Yining city
