以宁镇扬丘陵区的镇江市为案例地, 基于1978—2012年遥感图像数据, 从类型尺度和景观尺度2个维度分析镇江市土地利用景观格局时空过程特征; 并通过PCA模型定量揭示镇江市土地利用景观格局时空演化驱动因素. 结果表明: 1 ) 1978—2012年耕地是区域主导景观类型, 其次林地、 建设用地为区域优势景观类型; 其中耕地、 林地景观类型分别减少7. 63%、 1. 21%, 而建设用地景观增加8. 87%; 2 ) 镇江市总体斑块数目增加, 平均斑块面积、 斑块形状指数和分维数下降, 且耕地、 建设用地及水域对区域景观格局演化响应最为显著; 区域景观破碎度、 集聚度及多样性指数不断上升, 表明人类活动对研究区景观干扰不断增强, 且存在镇江中东部高于西部的空间分异特征; 3) 人口快速增长是土地利用景观格局演变的直接诱因, 城市化推动、 经济持续发展是景观格局演化的重要驱动, 而技术革新进步会对景观格局演变具有一定冲击作用; 4 大驱动力综合耦合作用1978—2012 年镇江市土地利用景观格局时空演化过程.%Based on MSS/TM/ETM+ remote sensing data in Zhenjiang from 1978 to 2012 , landscape pattern index was used to analyze land use and landscape evolution characteristics in Zhenjiang city based on type and landscape scales;and the PCA model was used to reveal the driving factors. Results showed that:1) cultivated land was the dominant landscape type, forest land and construction land were regional advantage type;cultivated land and forest land reduced during the period by 7. 63% and 1. 11% respectively, but construction land increased by 8. 87%;2) on the whole, patch number in-creased;the average patch area, patch shape index and fractal dimension decreased; landscape frag-mentation, agglomeration degree and diversity index raised, but evenness index declined;the evolution pattern of landscape scale index had spatial differentiation characteristics;3 ) population growth, ur-banization, economic development and technology progress drove space-time evolution of its land use and landscape pattern.
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