【摘要】 基于 1 986年和 2 0 0 0年 2期TM影像资料 ,在空间图形库系统支持下 ,分析了该区土地利用数量变化、土地利用空间组成变化、空间邻接关系变化和变化主导类型 ,揭示了 1 986～ 2 0 0 0年间松嫩平原西部生态脆弱区土地利用时空变化特征 .结果表明 ,此间林地、草地不断破碎化 ,耕地、盐碱地从整体上呈现集中化特征 .耕地与草地、草地与盐碱地空间相邻度增大 ,草地开垦过快和土地盐碱化日益严重 .土地利用空间变化内在过程基本以旱地 -水田 ,草地 -旱地 ,草地 -未利用地相互转化为主导 .更多还原

【Abstract】 A quantitative research on land use dynamic during 1986～2000 of the ecotone in the west part of Songnen Plain has been done,based on the spatial cartographic data base system. According to the analysis, the land use/cover in the west part of Northeast China have undergone dramatic changes. The area of farmland and salinized land increased rapidly while that of grassland, woodland, and water area decreased significantly in recent 15 years. The dominant land use change types were the conversion of grassland and woodland into farmland, dryland into paddy field and grassland into salinized land.更多还原