海岸线变化的单链曼延编号快速匹配方法

受海岸带区域自然环境变迁与人类开发活动的综合影响,海岸线不断发生剧烈变化。发现海岸线变化并将变化前后的岸段进行匹配,对分析海岸线变化至关重要。针对传统空间分析工具难以直接确定不同时相变化岸段的对应关系的问题,本文引入单链曼延编号的思想对海岸线变化进行快速匹配,并按照"一对一"和"多对多"两种变化岸段匹配关系提出了位置变迁、类型转移、消失及新增等海岸线变化类型的判断公式,设计并实现了结合单链曼延编号的海岸线变化匹配与信息存储方法。试验证明,该方法能快速准确地实现海岸线变化匹配,并能很好地解决多对多变化岸段匹配的问题。

A fast matching method of coastline changes using single-chain numbering

Affected by natural environment changes and human development activities in the coastal zone,coastline continues to change dramatically.Detecting coastline changes and matching the coastline change segments before and after changing are critical for analyzing coastline changes.As the traditional tools of spatial analysis lack of direct and effective matching function,this article introduced the single-chain numbering idea to match the coastline change segments quickly.The matching relationships of the coastline change segments were grouped into "one-to-one" and "multi-to-multi" .Besides,we also put forward a set of formula for determining the coastline change types such as position change,type change,disappearance and appearance.The matching and recording method of the coastline changes based on single-chain numbering has been designed and packed using python language.Experiments showed that the method proposed realized coastline changes matching quickly and accurately,which has solved the problem of matching the multi-to-multi coastline change segments.