摘要
选择1990、2005年2期的TM遥感图像,从土地利用结构及空间景观特征2方面对西吉县15a的土地利用变化进行分析。结果表明:西吉县土地利用动态变化的趋势是耕地、未利用地面积急剧下降,林草面积快速增长,城镇建设用地增加,水域面积萎缩;其动态转化过程是耕地和未利用地向林草地转化、水域转化为耕地、城镇用地占用耕地和牧草地;景观格局总体趋于破碎,景观多样性指数和均匀度指数下降而优势度上升。
The changes of land use of Xijie county within 15 years have been analyzed from the assets of land use structure and spatial landscape by choosing TM： remote sensing images in 1990 and 2005 respectively. As a result, the tendency and process of the change show that the area of cultivated land and unused land decrease rapidly to convert to woodland and meadow, while woodland and meadow, as well as occupied land for town construction greatly increased, but water area begins to shrink for the farmland reclamation again. The landscape setup generally tends to be fragmentated, the indexes of diversity and evenness decrease but dominance increases.
出处
《林业调查规划》
2006年第6期42-46,共5页
Forest Inventory and Planning
关键词
转移矩阵
土地利用变化
景观特征
conversion matrix
change of land use
landscape characteristics
