基于遥感数据通过地学信息图谱手段提取宁化县的2001、2007和2013年的土地利用变化状况,计算各种土地利用类型在3个时间段与8个象限内的扩展与收缩强度;并以象限为单位,探讨象限内的土地利用类型转换矩阵,为宁化县土地治理措施的科学性提供参考依据.研究结果显示:区域土地利用时空变化明显,且重视水土流失整治后,森林与毛竹林的总体面积有所增加,但各个土地利用类型在不同的象限内变化规律并不一致,在3个时间段与8个象限内都有不同程度的增减.
First extract three period (2001, 2007, 2013) of the land use data of Ninghua from remote sensing image. Then calculate the difference of expansion and contraction intensity of each land use in three periods and eight quadrants. And put the quadrant as the research unit, explore the land use types transform matrix in the quadrant So as to provide scientific basis for the sci- entific measures of land management in Ninghua County. From the result, it can show that after the government carried out the soil and water loss control, the area of forest and bamboo has obviously increased on the whole. However, in different quadrants, the changes law are difference , each land use have varying degrees of increase and decrease in three periods and eight quadrants, and the government can make or change the measure on the basis of this study's result.