摘要
通过航空像片解译，在地理信息系统的支撑下，分析了比利时中部黄土区Ｇａｎｓｐｏｅｌ流域的土地利用变化，土地利用面积的变化和转移概率矩阵模型被用来研究土地利用的时空变化，土地利用变化图彼输出。研究结果显示，从４０年代到８０年代，研究区域草地增加，农田面积减少，森林面积从１９４７年到１９６９年增加，从１９６９年到１９８６年减少。从１９４７年到１９６９年，研究区域４９％的面积土地利用发生了变化；从１９６９年到１９８６年，３６％的面积发生了变化。在研究时段内，景观更趋破碎化，土地利用的变化已引起了侵蚀和生态过程的变化。
The changes of land uses in Ganspoel catchment, central
Belgium have been ex-amined on the basis of aerial photography interpretation(1947,1969,and
l986)using Geograph-ic Information System(GIS).The comparison of land cover areal changes
and the transition ma-trix were used to assess land use changes in time and space.Grassland
increased and farmland de-creased in the study area from l940s to l980s.Forest increased from
l947 to l969 and decreasedfrom l969 to l986.About 49%of the study arca have experienced
changes of land use within1947 to 1969, and 36%in 1969 to l986.The landscape of the study
area is more fragmentedthan it was in the l940s. From l969 to l986,59 per cent of change area
took place on 0-3°shopes and 6.7 per cent was on>8°slopes from l969 to l986。Changing
land uses may have im-portant ecological implications.
