摘要
利用石羊河流域1980、1995、2000、2006、2012年5期遥感影像,应用分形理论和GIS方法研究石羊河流域土地利用变化分形特征,定量分析流域不同土地利用类型变化的复杂性、稳定性以及变化趋势。结果表明:总体上流域耕地、城乡工矿居民用地、林地和水域呈现增加趋势,未利用地和草地呈现减少趋势,不同时段土地利用类型都具有空间分形结构,不同土地利用类型复杂性和稳定性呈现波动变化趋势。1980、1995、2000年石羊河流域不同土地利用类型分维数排序均为:水域>耕地>林地>草地>未利用土地>城乡工矿居民用地。2006、2012年分维数由高到低依次为:水域、耕地、草地、林地、未利用土地和城乡工矿居民用地。1980、1995、2000、2006、2012年石羊河流域总平均分维值分别为1.5296、1.5025、1.5445、1.5631、1.5676,不同土地利用类型平均分形维排序为水域(1.8317)>耕地(1.5678)>林地(1.5351)>草地(1.5315)>未利用土地(1.4413)>城乡工矿居民用地(1.3411)。总平均稳定性指数分别为0.1083、0.0997、0.1228、0.1167和0.1186,不同土地利用类型平均稳定性排序为水域(0.3317)>城乡工矿居民用地(0.1589)>耕地(0.0635)>未利用土地(0.0587)>林地(0.0351)>草地(0.0315)。通过对流域土地利用变化复杂性、稳定性以及动态变化研究,为区域土地资源合理开发与生态环境协调发展提供技术支撑与决策依据。
Using fractal theory and GIS method with remote images of 1980, 1995, 2000, 2006 and 2012, fractal characteristics of land use change were studied and the complexity, stability and dynamic change tendency of different land use types change were quantitative analyzed in Shiyang river basin. The results showed that cultivated land, urban and rural residential land and industrial and mining land, forest land and water area had an increasing tendency, and unused land and grassland decreased. The different period land use types had the spatial fractal structure, and the complexity and stability of different land use types had fluctuation change tendency. The order of the fractal dimension value of different land use types was water area〉 cultivated land〉forest land〉 grassland〉 unused land〉 urban and rural residential land and industrial and mining land in 1990, 2000 and 2005, and the order in 2006 and 2012 was water area〉 cultivated land〉 grassland〉 forest land〉 unused land〉 urban and rural residential land and industrial andmining land. The average fractal dimension value of land use of Shiyang river basin was 1.5296, 1.5025, 1.5445, 1.5631 and 1.5676 in 1980, 1995, 2000, 2006 and 2012, respectively. The average fractal dimension values of different land use types followed the order of water area (1.8317)〉 cultivated land (1.5678)〉 forest land (1.5351)〉 grassland (1.5315)〉 unused land (1.4413)〉 urban and rural residential land and industrial and mining land (1.3411). The average stability index of land use of Shiyang river basin was 0.1083, 0.0997, 0.1228, 0.1167 and 0.1186 in 1980, 1995, 2000, 2006 and 2012, respectively. The average stability index of different land use types followed the order of water area (0.3317) 〉 urban and rural residential land and industrial and mining land (0.1589)〉 cultivated land (0.0635)〉 unused land (0.0587)〉 forest land (0.0351) 〉 grassland (0.0315). The research of fractal complexity, stability an
出处
《中国农学通报》
2016年第35期80-87,共8页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金项目"气候与土地利用变化对石羊河流域水资源影响研究"(51369003)
"疏勒河流域中游绿洲生态需水过程与阈值研究"(51369004)
水利部公益性行业科研专项"疏勒河中游绿洲水-经济-生态系统耦合调控技术"(201301081)
中央高校基本科研业务费专项资金项目"紫花苜蓿转录因子DREB/CBF单核苷酸多态性与抗旱性关系的研究"(31920130045)
关键词
石羊河流域
土地利用变化
分形特征
分维数
稳定性
Shiyang river basin
land use change
fractal characteristics
fractal dimension
stability