LIU Xiao-dan,ZHANG Ke-bin,CAO Yong-xiang,et al.Research on Fractal of Land Cover in Tsagan Us Oasis in Caidam Basin[J].Research of Soil and Water Conservation,2009,16(02):216-219.
柴达木盆地察汗乌苏绿洲土地覆盖分形研究
- Title:
- Research on Fractal of Land Cover in Tsagan Us Oasis in Caidam Basin
- Keywords:
- Caidam Basin; Tsagan Us; oasis; land cover; fractal theory
- 分类号:
- X171.1
- 摘要:
- 以RS和GIS为技术手段,利用国土资源卫星遥感数据,采用分形几何方法研究了柴达木盆地都兰县察汗乌苏绿洲土地覆盖类型分形情况,并对覆盖类型的分形特征差异等进行了分析.结果表明:研究区景观分离度最大的是林地,最小的是耕地,表明耕地分散程度最小,林地分散程度最大.区域景观破碎度最大的是林地,最小的是荒草地和河床与水利设施用地,说明林地被分割程度最大,荒草地和河床与水利设施用地最小.察汗乌苏绿洲分维数最大的是河床与水利设施用地,最小的是耕地,即河床与水利设施用地形状最不规则,受人为干扰最小,相对耕地形状最为规则,受人为干扰最大.
- Abstract:
- With the application of RS and GIS techniques,as well as the CBERS data,fractal theory was employed to study circumstances of the fractal of oasis land cover in Tsagan Us Oasis in Dulan county in Caidam Basin,and the prominence of the difference of fragmentation distribution was analyzed.The results show that the biggest landscape separation index in the research area is the forest land and the smallest is farmland,which shows that the scattered degree of farmland is the least and the land use of farmland is the biggest.The biggest regional landscape fragmentation is the forest land,the smallest are waste-grassland and riverbed and water conservancy facilities land,which shows that the dividing degree of forest land is the biggest and the land use of waste-grassland and riverbed and water conservancy facilities land are the least.The biggest index of fractal dimensions is riverbed and water conservancy facilities land,the least is farmland.It means that the shape of riverbed and water conservancy facilities land is irregular,the human disturbance is the least,otherwise the shape of farm land is regular and human disturbance is the biggest.
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备注/Memo
收稿日期:2008-9-12;改回日期:。
基金项目:国家“十一五”科技支撑计划项目(2006BAD26B1001)
作者简介:刘小丹(1983- ),男,山西吕梁人,硕士在读,主要从事荒漠化防治、监测,干旱区生态建设等方面的研究.E-mail:liuxiaodan831121@163.com
通讯作者:张克斌(1957- ),男,陕西咸阳人,副教授,研究方向为荒漠化防治及干旱区环境管理.E-mail:ctccd@126.com