摘要
人参Panax ginseng为五加科人参属植物,干燥的根和根茎入药,依靠人工栽培的方式主要称为园参。该文采用多时相的卫星遥感影像数据经辐射校正、大气校正、几何校正和正射校正,对不同年份的数据做图像配准预处理后,利用面向对象方法对遥感影像进行多尺度分割,结合实地调查参棚在遥感影像上的特征,目视解译出长白县境内2017年和2018年的参地分布图斑。利用GIS空间分析工具对长白县参地面积进行计算,并对2017—2018年的参地变化进行分析。结果显示2017年长白县参地面积为2. 74万亩(1亩≈667 m~2),2018年的参地面积为1. 39万亩。长白县2018年新增园参参地面积为1. 25万亩; 2017采收面积为2. 7万亩,留存面积1 379亩。通过对园参栽培区域内的参地变化分析研究,对长白县的园参下一步的实际生产规划和布局具有指导意义。
The dried roots of Panax ginseng are used as medicines. In this paper,multi-time satellite sensing image data are used for image registration by radiometric correction,atmospheric pressure correction,the data of different years were compared. The multiscale segmentation of the sensing image was successively carried out by using object-oriented method. Combining with the characteristics of the sensing image participated in the field survey,the objective was to understand the speckles of the environmental parameters distribution map of Changbai county in 2017 and 2018. The parameter area of Changbai county was calculated by using GIS spatial analysis tools. The union,erase and intersect tools of " analysis to OLS" overlay in " Arc Toolbox" were used to analyze the parametric area of Changbai county from 2017 to 2018. The results showed that the parameter area of Changbai county in 2017 was 27 400 mu( 1 mu≈667 m~2),and the parameter area in 2018 was 13 900 mu. The parameter area of the new park in Changbai County in 2018 was 12 500 mu,and the harvested area in 2017 was 27 000 mu. Through the analysis and study of the regional change of the park participating in the training area,it has significance for guiding the park participating in the actual production planning and layout in Changbai county in the next step.
引文
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