摘要
探讨复垦矿区土地利用程度的空间异质性对实现矿区土地资源可持续利用具有重要意义。以徐州市贾汪矿区两期(复垦前、后)Landsat影像为数据源,利用空间采样技术、土地利用程度指数和地统计方法等,探讨了复垦前后矿区土地利用程度的时空分异特征。结果表明,复垦前后矿区土地利用程度呈现正的全局空间自相关关系,Moran’s I指数分别为0.7076和0.6280,土地利用程度高—高集聚区主要集中在贾汪主城区和西南部的中心镇区域,低—低集聚区主要集中在贾汪主城区东部和北部的低山丘陵区;由于城市化进程的加快和基础设施的建设等,20.87%的区域土地利用程度有所增加,主要集中在研究区北部和中部建成区外围;7.83%的区域土地利用程度有所降低,主要分布在研究区西南部的复垦矿区和东北部;71.30%的区域土地利用程度没有发生变化,主要分布在贾汪区南部的农业种植区。研究成果可为矿区土地复垦、规划等提供参考。
Exploring the spatial heterogeneity of land use degree in reclaimed mining area is of great significance to realize the sustainable utilization of land resources.Taking the two-stage(before and after reclamation)Landsat images of Jiawang mining area in Xuzhou City as the data source,the spatial and temporal differentiation characteristics of land use degree in mining area before and after reclamation were discussed by using spatial sampling technology,land use degree index and land statistics method.The results show that before and after reclamation,the land use degrees of the mining area have a positive global spatial autocorrelation relationship,and the Moran's I indexes are 0.7076 and 0.6280,respectively.The high-high agglomeration areas of land use degree are mainly concentrated in the main urban area of Jiawang and the central town area in the southwest.The low-low agglomeration areas are mainly concentrated in the low hilly areas in the east and north of the main urban area of Jiawang.Due to the acceleration of urbanization and the construction of transport infrastructure,20.87%of the regional land use level has increased,mainly concentrates in the northern and central periphery of the study area.7.83%of the regional land use degree has decreased,mainly distributes in the southwest reclamation mining area and northeast of the study area,71.30%of the regional land use degree does not change,mainly distributes in the southern agricultural planting area of Jiawang.The research results can provide a basis for land use planning in mining area.
作者
李保杰
褚帅
LI Baojie;CHU Shuai(School of Geography&Geomatics and Urban-Rural Planning,Jiangsu Normal University,Xuzhou,Jiangsu 221116,China)
出处
《矿业研究与开发》
CAS
北大核心
2023年第4期154-159,共6页
Mining Research and Development
基金
江苏高校优势学科建设工程资助项目(PAPD)
江苏高校哲学社会科学研究项目(2022SJYB1146)。
关键词
贾汪矿区
土地利用程度
半变异函数
空间自相关
Jiawang mining area
Land use degree
Semivariogram
Spatial autocorrelation
