摘要
为了研究快速城市化过程中县级尺度土地利用结构特征,从而更精确把握土地利用与覆被变化的动态过程。将GIS技术与CLUE-S模型结合研究重庆市永川区土地利用空间格局的变化。结果表明:永川区2000—2010年土地利用类型变化均以森林和农田为主,各期占总面积90%以上。从2000—2010年城镇面积显著增加,增加了16.11%,且2005—2010年城镇面积变化程度比2000—2005年变化更为剧烈。森林面积在10年间少量增加。10年间农田面积减少了1660 hm2。对永川区土地利用变化设定3种情景进行模拟,并对预测结果进行比较分析。由此得出:在快速城市化的驱动下,永川区土地利用景观格局变化以森林和农田为主,城镇面积大幅度增加,森林面积也呈现增加趋势。相应地农田面积减少。生态保护情景模式下对生态环境有保护作用的土地利用类型有较好的调控效果。
This article chose Chongqing Yongchuan, which was located in the three gorges reservoir region, as the research area, to classify and analyze the spatial change patterns of land use in 2000, 2005 and 2010 by using GIS technology. The results indicated that Yongchuan district, under the drive of rapid urbanization, had a remarkable increase of urban area and slight increase of forest area. Accordingly, farmland area was reducing in the 10 years as a source of forest and urban land supply. In this paper, the spatial change patterns of land use in 2015 were simulated three times with the CLUE-S model by using the spatial data of land use in 2010 and the driving factors affected land use change. The simulated results show that the forest and urban land expansion will be at the consumption of farmland. Above all, the ecological protection model have a good control effect, thus the forest, grassland and water, which have the ecological service function, should be better protected and increased, and inhibit the rapid expansion of urban construction. The delimitation of ecological protection area is important to the protection of ecological environment.
出处
《中国农学通报》
CSCD
2014年第35期166-171,共6页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金项目"面向低碳城市的生态用地综合分析方法及其空间调控模式研究"(41171442)
