石漠化综合治理示范区土地利用变化研究——以贵州毕节鸭池示范区为例

Research on the dynamic changes of landuse in rocky desertification integrated rehabilitation——Taking Yachi demonstration base in Bijie of Guizhou as an example

根据毕节鸭池示范区2004年和2011年的SPOT影像,利用遥感、GIS技术及数理统计,系统分析了该区石漠化综合治理7年后土地利用变化的时空格局和特征,及时准确掌握示范区生态环境状况和各项措施效果,促进治理区的可持续发展。研究结果表明:石漠化综合治理过程中,由于封山育林、退耕还林(经果林、防护林)还草,毕节鸭池示范区有林地、果园、草地明显增加,而旱地、灌木林地、裸岩地明显减少;由于城镇化发展,建设用地明显增加,而水田明显减少;石漠化综合治理取得明显成效,示范区土地利用结构更加合理;示范区逐步实现土地可持续利用。

The paper examined the temporal and spatial dynamics of landuse change during the period of 2004-2011 occurring over Yaehi demonstration base in Bijie based on remote sensing images, relevant image processing techniques and statistic methods,to provide a scientific basis for ecological environment and engineering measures effect and sustainable landuse management. The images involved the SPOT data acquired in 2004 and 2011. The results showed that woodland, grass field jingguolin construction land showed an increasing trend while paddy field, dry farmland, shrub land, rocky desertification land all decreased because of rocky desertification integrated rehabilitation. Rocky desertification integrated rehabilitation produced significant results, landuse structure of the area was more reasonable, landuse of the area gradually realized sustainable.