基于遥感和GIS技术的辽河三角洲岸线变迁与成因分析

利用遥感影像的时空分布特点,选择1970—2010年间的5期遥感影像资料对辽河三角洲地区的岸线变迁进行遥感解译。结果显示,每2期相邻影像所在时段内均有新增土地。4个时段新增陆地面积具体为:1970—1980年间,15.52km2;1980—1990年间,40.55km2;1990—2000年间,70.14km2;2000—2010年间,17.33km2。通过自然因素与人类活动影响2个方面,进一步对岸线变迁的成因进行了分析。

An analysis of shoreline changes in Liaohe River delta based on remote sensing and GIS technology

For the purpose of investigating the temporal and spatial characteristics of remote sensing images, the authors selected images of five periods taken from 1970 to 2010 to interpret the shoreline migrations in Liaohe River delta. The result indicates that in every time interval of two neighboring images, there emerged a newly accumulated land, whose area was 15.52km2 from 1970 to 1980, 40.55km2 from 1980 to 1990, 70.14km2 from 1990 to 2000, and 17.33km2 from 2000 to 2010, respectively. The factors responsible for shoreline migrations are analyzed in the aspects of native influence and human activity.