摘要
为研究象山湾海岸线形态的时空变化,总结不同人类干扰强度下海岸线的分维值范围,采用遥感影像图结合Arc GIS分别对1995年、2002年、2014年的海岸线进行了数字化,并根据一定原则对不同干扰强度下的岸线进行了分段,运用网格法进行分形维数的计算.最后,对海岸线分形与人类干扰强度关系进行了探讨.结果表明:1)1995—2014年,象山湾海岸线的分维值稳定在1.04左右,但呈现下降趋势;2)全人工岸线分维值为0.97~1.04,半人工岸线分维值为0.99~1.02,全自然岸线分维值为1.03~1.09.说明受人类干扰强度越小,海岸线分维值一般越大.
It was investigated the morphology change of Xiangshan Bay＇s coastline in temporal and spatial, and summarized the range of fraetal dimensions under different intensity of human activities, remote sensing images combined with ArcGIS were used to the digitalization of the coastlines in 1995, 2002 and 2014. Coastlines were divided into sections according to different intensity of human activity. The fraetal dimensions were calculated by grid method, and the relationship between fractal dimensions and the intensity of human activity was discussed. It was concluded that ： 1 ） The fraetal dimensions of Xiangshan Bay during 1995 and 2014 stabilized around 1.04, but followed a downward trend; 2 ） The fractal dimensions of artificial coastlines were 0.97 - 1.04, semi-artificial coastlines were 0.99 - 1.02 ; the natural coastline were 1.03 - 1.09. It indicated that generally weaken the intensity of human disturbance would result in larger fraetal dimension.
出处
《浙江师范大学学报（自然科学版）》
CAS
2017年第1期106-113,共8页
Journal of Zhejiang Normal University:Natural Sciences
基金
国家自然科学基金资助项目(70773089)
关键词
象山湾
海岸线
分形
人类干扰强度
Xiangshan Bay
coastline
fractal
human disturbance intensity
