摘要
利用1990-2005年非洲土地利用的统计数据,通过计算其土地利用变化动态度和相对变化率,对非洲的土地利用现状及其变化进行分析。结果表明,非洲土地资源总量丰富,在除南极洲外的6个大洲里排第2,但人均占有量不高,列6个大洲的第4,略高于世界整体水平,且各类型土地在分布上有一定的区域差异性,表现为在某些地区集中分布;在土地利用变化上与其他大洲相比,总体较为平缓,土地结构较为稳定,但人均占有量变化速度较快;非洲各地区的土地利用变化与非洲整体水平的差异性不明显,土地变化方向、水平和程度相对比较一致。
According to. the statistics of African land use from 1990 to 2005, the present situation and changes of land use in Africa were analyzed by calculating the dynamic degree and the relative change rate. The results showed that the gross land resources are abundant in Africa, ranking as the second in six continents except Antaratica, but the per capita land areas are not much, only taking fourth place in six continents, and exceed the world level slightly. The various types of land have some regional differences in distribution, which are reflected by the concentrated distribution of land resources in certain areas. Compared with other continents, the overall changes of land use are gentler, and the structure of land is more stable, but the change of per capita area is faster. The differences of land use change among the five regions in Africa are not very obvious. The land change direction, level and extent coincide relatively.
出处
《安徽农业科学》
CAS
北大核心
2009年第6期2628-2631,共4页
Journal of Anhui Agricultural Sciences
基金
浙江省自然科学基金项目(Y5080307)
关键词
非洲
土地利用
现状
变化特征
Africa
Land use
Present Status
Variation characteristics
