基于数字地图的下荆江河道变迁研究

根据不同历史时期的下荆江河道图形建立了供分析用的数字地图，在此基础上应用地理信息系统技术对下荆江河道图形进行了量测、计算、河道演变规律分析与模拟显示，并用最新的下荆江河道图形资料对其结果进行了检核；结合地质、地貌及其它因素，对下荆江河道的演变进行了分析和预测。

The research into Xia-Jingjiang River's channel change based on digital map

According to the maps of Xia-Jingjiang River channel in some different historical periods, the paper made some digital maps which were used to analysize the channel change. Based on these maps and GIS technology, the measurement, calculation on the channel and the analysis, analogue display to the channel change were made on the Xia-Jingjiang River, at the same time the test was made on the result of the channel change by using the new chart datas. At last the paper made an analysis and prediction to the channel change of Xia-Jingjiang River combining with its geology, geomorphy and other features.