期刊信息

  • 刊名: 河北师范大学学报(自然科学版)Journal of Hebei Normal University (Natural Science)
  • 主办: 河北师范大学
  • ISSN: 1000-5854
  • CN: 13-1061/N
  • 中国科技核心期刊
  • 中国期刊方阵入选期刊
  • 中国高校优秀科技期刊
  • 华北优秀期刊
  • 河北省优秀科技期刊

县域尺度上基于多时相影像的冬小麦面积监测

  • 1. 北华航天工业学院 电子与控制工程学院, 河北 廊坊 065000;
    2. 河北省航天遥感信息处理与应用协同创新中心, 河北 廊坊 065000;
    3. 河北省航天遥感信息工程技术研究中心, 河北 廊坊 065000
  • DOI: 10.13763/j.cnki.jhebnu.nse.2018.06.012

Extraction of Winter Wheat Planting Area Based on Multi-temporal Remote Sensing Images on County Scale

摘要/Abstract

摘要:

探究了基于多时相遥感影像在县域尺度上对冬小麦种植面积的监测方法.以河北省廊坊市固安县柳泉镇为研究区域,以冬小麦为目标作物,采用2014年11月份ZY 3(资源三号)和2015年4月份GF 2(高分二号)卫星的遥感影像数据源进行研究.影像经过预处理后,分别计算其归一化植被指数(NDVI),综合分析冬小麦种植面积和其NDVI的相关关系,构建NDVI差值模型来提取冬小麦种植面积,结合ArcGIS软件在影像上随机采样进行验证,最终得到种植空间分布图.采用2015年在柳泉镇实地勘测的冬小麦种植面积数据进行验证,精度可达95.54%.在廊坊市固安县进行区域应用,利用Excel软件进行各乡镇面积统计.结果表明,在县域尺度上采用该方法进行冬小麦面积提取能够达到很高的精度,为科学管理冬小麦的播种面积及制定相关政策提供技术支持.

Abstract:

In order to explore the winter wheat planting area monitoring method based on multi-temporal remote sensing images on county scale,Liuquan town of Gu'an county,Langfang,Hebei was taken as study area and the winter wheat as target crops.Remote sensing images in ZY-3 satellite in November,2014 and GF-2 satellite in April,2015 were used.After preprocessing the images,the NDVI was calculated,and correlation of winter wheat planting area and its NDVI images was analyzed.Then the NDVI difference model was built to extract planting area,and the results were verified by random sampling on the image using the ArcGIS software,providing the final planting area image.When verified by the field survey data of winter wheat planting area in Liuquan town in 2015,the accuracy of the extraction method of winter wheat planting area can be 95.54%.Finally,the method was applied in Gu'an county of Langfang,and the area of each town was calculated by EXCEL software.The results showed that this extraction method of winter wheat planting area on county scale had high accuracy,providing technical support for scientific management of winter wheat sown area and related policy formulation.

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