摘要
土地利用变化是国际地圈生物圈计划(IGBP)的核心研究计划之一,经典的数理统计方法未考虑空间因素的影响,因此土地利用空间演变分析的结果易产生偏差.基于广州市土地利用变更调查数据,采用GIS空间分析和空间自相关方法,在对2005—2009年广州市土地利用变化格局进行初步分析的基础上,选取交通运输用地和城镇村及工矿建设用地,对这两类用地变化强度空间格局及其集聚情况进行了探索,结果表明:(1)广州市土地利用变化向南发展速度最快,各个地类中道路与建设用地的扩张方向一致,大量建设用地转为交通用地和林地;(2)空间位置影响下,各年份网格单元存在明显的空间正相关.邻近空间单元之间互相依赖发展变化,且趋于高动态度集聚(H-H);(3)广州市土地在各区交界处废弃、破碎、分散的建设用地复垦为农用地,在这些地区会有高动态度集聚(H-H),由此认为土地利用动态度集聚对行政因素的响应较敏感.
Research on land use change is one of the core plans of International Geosphere-Biosphere Programme （ IGBP） .Since the classical mathematical statistics to land use studies ignores the impact of spatial factors , the a-nalysis results of land use spatial evolution prone to bias .The results indicate that： （ 1 ） The more closer to the south , the more faster of Guangzhou＇s land use change develops;the expansion direction of all types of road is con-sistent with that of construction land , and a large number of the construction lands has turned into the forest lands and the transport lands;（2） Under the influence of the spatial position , each year there is an obvious space positive correlation between grid cells .The adjacent units are developed and changed in mutual dependence , and they tend to be highly dynamic agglomeration（HH）;（3） In Guangzhou, the abandoned, broken, and scattered construction lands at the junction of districts are changed into agricultural land through land reclamation , and there is a highly dynamic agglomeration（HH） in these regions.Thus it may conclude that the degree of land use dynamics agglom-eration responses sensitively to the administrative factors .
出处
《华南师范大学学报（自然科学版）》
CAS
北大核心
2014年第5期118-125,共8页
Journal of South China Normal University(Natural Science Edition)
基金
国家自然科学基金项目(41001078)
关键词
土地利用变化
动态度
空间自相关
广州市
land use change
dynamic degree
spatial autocorrelation
Guangzhou City
