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为界定出西北干旱区典型半城市化地区的空间分布情况,进一步探究其时空变化规律,以乌鲁木齐市高新区为研究对象,基于Landsat TM/OLI遥感影像解译数据和统计数据,应用遥感、地理信息空间处理技术与信息熵原理,结合“断裂点”分析方法,识别出2001年和2013年半城市化地区的空间范围,从空间特征和时序特征对半城市化区域的空间分布变化进行分析与探讨。结果表明:(1)乌鲁木齐市高新区景观紊乱度和建设用地占比指标具有显著空间差异性;(2)半城市化地区呈星形发散状分布于南部核心区与北部郊区之间的乡(镇)/街道内;(3)半城市化地区的空间形态在西南、东南等方向呈现明显缩变特征;(4)采用的研究方法与技术和对半城市化地区空间变化的研究结果,具有一定的理论与应用意义。
In order to define the spatial distribution of the typical semi-urban areas in northwest arid area and further explore the temporal and spatial variation rules, take Urumqi High-tech Zone as the research object. Based on the interpreted data and statistical data of Landsat TM / OLI remote sensing images, Information space processing technology and information entropy principle, combined with the “breakpoint ” analysis method, identify the spatial range of semi-urban areas in 2001 and 2013, from the spatial characteristics and temporal features of semi-urban areas of the spatial distribution of changes Analysis and discussion. The results show as follows: (1) There are significant spatial differences in the landscape disturbance and the proportion of construction land use in Urumqi Hi-tech Zone; (2) The semi-urban areas are scattered in a star-shaped pattern distributed in the townships between the southern core area and the northern suburbs Town) / street; (3) The spatial pattern of the semi-urbanized area shows obvious shrinkage features in the southwest, southeast and other directions; (4) The research methods and techniques adopted and the research results on the spatial variation of the semi-urbanized area have Certain theoretical and practical significance.