摘要
从分析梧州市土地利用现状入手， 总结其土地利用的现状特征， 而后在引入多样性指数、优势度指数、均匀度指数和破碎度指数的基础上， 对梧州市土地利用／ 覆盖的空间格局进行了定量分析。最后， 根据计算结果得出有关结论。
The land use in Wuzhou City is divided into eight types: cultivated land, garden plot, forest land, grazing land, residential area and industrial land, traffic land, water area, and unused land The present land use in the city is characterized by that: 1) the types of land use are diverse, but the forest and agricultural land are dominant, 2) the ratio of land use is high, but the general level of land use is moderate, and 3) the reserve of land resources,especially that of cultivated land resources is markedly insufficient The spatial pattern of land use/cover in Wuzhou City is analysed quantitatively by introducing the diversity index, dominance index, homogeneity index and broken index. Some conclusions are as follows: 1) The spatial pattern of land use/cover in the area is composed of large patches with branch-shape and scatter patches mosaicked The pattern is determined by natural conditions (the hilly landform and dense river nets) and human activities (residential areas and roads)in the area Forest land and cultivated land, especially the forest land, accout for the largest proportion.In Cangwu County the dominance index D for forest land is up to 1 9048) 2) According to indexes of spatial patterns, a clear picture of the interference degree caused by human activities can be made As the increasing of disturbances form human, the diversity index, the homogeneity index and the broken index all increase, while the dominance index decreases
出处
《热带地理》
北大核心
1999年第3期219-224,共6页
Tropical Geography
