【作者】 郭丽英； 王道龙；

【Author】 Guo Liying;Wang Daolong;Institute of Natural Resources and Regional Planning,CAAS;

【机构】 中国农业科学院农业资源与农业区划研究所；

【摘要】 基于环渤海地区1985年和2008年的1:10万土地利用现状矢量图库,在GIS技术与模型方法支持下,定量分析了环渤海地区耕地变化的动态特征。进一步利用重心模型法,计算了研究期内耕地面积重心及其变化。结果表明:1985-2008年,环渤海地区耕地面积减少139.15×104hm2,年均减少6.05×104hm2;耕地面积重心向东移动0.097°、向北移动0.011°,重心总体向东北移动1321.78km;1985-2008年环渤海地区耕地变化不仅表现为面积减少,而且表现耕地质量的下降,快速城镇化对耕地面积及其空间变化的影响日益显现。更多还原

【Abstract】 Based on Bohai rim’s 1∶10,000 land use status vector data and supported by GIS and model method,this paper quantitatively analyses the dynamic feature of Bohai rim’s farmland change.Further farmland area and the gravity center change within the study period are calculated by the gravity center model method.The results show that during the period of 1985 to 2008,farmland area of Bohai rim reduced 1,391,500 hm2 with an average annual decrease of 60,500 hm2.The gravity center of farmland area moved toward east 0.097 ° and 0.011 ° to north.The gravity center generally moved to the northeast 1321.78 km.From 1985 to 2008 Bohai rim’s farmland change is not only area decreasing,but also quality is declining.The effects of rapid urbanization on the farmland area and spatial change are more and more remarkable.更多还原