盘锦湿地专题地图的制作及动态变化分析  

Production and Dynamic Analysis of Panjin Wetland Project Map

作　　者：周成新 孟磊 宋永超 ZHOU Chengxin;MENG Lei;SONG Yongchao(The First Surveying and Mapping Engingeering Institute of Heilongjiang,Harbin 150025,China)

机构地区：[1]黑龙江第一测绘工程院,黑龙江哈尔滨150025

出　　处：《测绘与空间地理信息》2021年第S01期300-304,共5页Geomatics & Spatial Information Technology

摘　　要：盘锦市湿地对整个东北地区乃至全国及周边国家的气候调节、空气净化起着举足轻重的作用,在国际国内生态环境保护中占有十分重要的地位。针对近年来盘锦市湿地动态变化信息相对匮乏的问题,本文提出以盘锦市三期Landsat遥感影像为数据源,通过对影像进行缨帽变换、采集光谱值以及计算形状指数,构建决策树模型,进而提取湿地信息。通过对湿地分类结果进行精度评价,验证了运用本文方法进行分类的结果可满足精度要求,再根据分类结果制作湿地专题地图,并根据不同年份的湿地分类结果进行动态变化分析。分析结果显示,由于盘锦市经济发展和城市面积扩大等原因,导致湿地面积逐渐减少,且这种资源演变特征还有进一步持续的趋势,应该引起有关部门的重视。Panjin wetland plays an important role in the climate regulation and air purification of the whole northeast region and the whole country and neighboring countries.It occupies a very important position in the international and domestic ecological environment protection.In view of the relative shortage of dynamic information of wetland in Panjin City in recent years,this paper proposes to construct the decision tree model by transforming the image,collecting the spectral value and calculating the shape index,and then constructing the decision tree model with the Landsat remote sensing image of Panjin City as the data source.Extract wetland information.Based on the accuracy evaluation of wetland classification results,it is verified that the classification results of this method are used to meet the precision requirements,and the thematic maps of wetlands are made according to the classification results,and the dynamic changes are analyzed according to the wetland classification results in different years.The results show that,due to the economic development and urban area expansion in Panjin City,the wetland area is gradually reduced,and the characteristics of this resource evolution have a further trend,which should be paid attention to by the relevant departments.

关 键 词：盘锦湿地 遥感 决策树 缨帽变换 分类 变化分析 

分 类 号：P285[天文地球—地图制图学与地理信息工程]