摘要
基于重庆地区1∶10万土壤侵蚀图实地调查,在地理信息系统软件(ArcviewGIS)和景观格局分析软件Frag-stats(栅格版)支持下,从景观总体特征、斑块面积、斑块数、斑块周长和分形维数角度进行了土壤侵蚀格局分析和破碎化评价。结果表明,中强度土壤侵蚀分布在土壤侵蚀敏感性较高的区域;微度侵蚀和中度侵蚀的边界密度较高,异质性特征也较强烈,显示出对整个地区景观有较高程度的影响;剧烈侵蚀、极强度侵蚀斑块高度破碎化。
Based on soil erosion map of Chongqing in 1999 （scale 1： 100 000） , and by using the geographic information system program Arcview,Arc/Info and landscape analysis program Fragstats 3.3, the spatial pattern of soil erosion in Chongqing is analyzed and the degree of fragmentation is evaluated. We use the overall landscape properties, the area properties, the perimeter properties, the numbers of patches of landscape elements,and the double-logged fractal dimension to draw the conclusions which are： the middle and intensive soil erosion grades distributing in the area with high soil erosion sensitivity. The patch density of weak and mild erosion grades are higher than other grades, indicating a higher degree of heterogeneity and strong influence on the overall landscape. The patches of intensive and strongest grades are a higher degree of fragmentation inversely.
出处
《重庆师范大学学报（自然科学版）》
CAS
2007年第4期12-15,F0002,共5页
Journal of Chongqing Normal University:Natural Science
基金
教育部"新世纪优秀人才支持计划资助"(No.NCET-05-0819)
关键词
土壤侵蚀
景观格局
重庆
Soil erosion
Landscape pattern
Chongqing
