贵阳市“两湖一库”地区土地利用/覆被变化及驱动力研究(始于1993年)

Study on Land Use /Cover Changes of “Two Lakes and One Reservoir”Area and the Driving Force in Guiyang Since 1993

利用GIS和RS技术,建立区域土地利用/覆被类型空间数据库,定量分析了研究区域1973年以来土地利用/覆被时空变化特征,并对其驱动力进行探讨。结果表明:1)与1993年相比,荒草地急剧减少,只占区域面积的1.02%,建设用面积急剧增加,比1993年增加了113.78%,林地面积增加了18.09%,耕地面积(旱地、水田)减少19.21%,水域面积增加11.79%;2)耕地主要向林地和建设用地转移,荒草地主要向林地和水域转移,林地则主要向建设用地转移;3)主要驱动力是经济发展带来的人们对土地资源的利用方式所致。

The spatial database of regional land use / cover changes was established by using GIS and RS. Quan- titative analysis was made for the land uses / cover characteristics of temporal and spatial variation since 1973. The study was also conducted on the driving force. The results showed that 1 ） compared with 1993, the grassland de- creased rapidly, only accounting for 1.02 % of the area ; the construction area increased dramatically, increased by 113.78 % ; the forest land area increased byl8.09 % ; the area of cultivated land （dry land, paddy field） reduced byl9.21% ; and the water area increased by 11.79 % ; 2） the cultivated land was mainly transferred to the wood- land and construction land, the grassland mainly transferred to forest and water area, the forest land mainly trans- ferred to the construction land ; and 3 ） the main driving force in the study area was how to use land resource, which could bring about economic development.