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现代地质 ›› 2019, Vol. 33 ›› Issue (05): 1098-1105.DOI: 10.19657/j.geoscience.1000-8527.2019.006

• 环境地质学 • 上一篇    下一篇

基于遥感专题解译的白洋淀湿地底部DEM构建

王凯霖1,2(), 李海涛2(), 李文鹏2, 李木子2, 陈一超2, 张宝匀3   

  1. 1.中国地质大学(北京) 水资源与环境学院,北京 100083
    2.中国地质环境监测院,北京 100081
    3.中国地质科学院 地球物理地球化学勘查研究所,河北 廊坊 065000
  • 收稿日期:2018-10-23 修回日期:2019-06-27 出版日期:2019-10-26 发布日期:2019-10-28
  • 通讯作者: 李海涛
  • 作者简介:李海涛,男,博士,教授级高级工程师,1979年出生,水文地质学专业,主要从事水文地质调查和地下水监测方面研究工作。Email: liht@mail.cigem.gov.cn
    王凯霖,男,博士研究生,1991年出生,水文地质学专业,主要从事生态水文方面研究。Email: wangkl_cugb@163.com
  • 基金资助:
    中国地质调查局项目“雄安新区资源环境承载能力监测和透明雄安数字平台建设”(DD20189142);“白洋淀流域和漳卫河流域平原区1∶5万水文地质调查”(DD20160239)

Construction of DEM in Baiyangdian Wetland Based on Remote Sensing Thematic Interpretation

WANG Kailin1,2(), LI Haitao2(), LI Wenpeng2, LI Muzi2, CHEN Yichao2, ZHANG Baoyun3   

  1. 1. School of Water Resources and Environment,China University of Geosciences,Beijing 100083,China
    2. China Institute of Geo-Environmental Monitoring,Beijing 100081,China
    3. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences,Langfang,Hebei 065000,China
  • Received:2018-10-23 Revised:2019-06-27 Online:2019-10-26 Published:2019-10-28
  • Contact: LI Haitao

摘要:

基于多时相 Landsat 遥感影像,利用适合白洋淀湿地信息提取的综合提取方法提取湿地范围。将湿地范围视为水体淹没区,淹没区的边界线视为对应地表水位高程的等高线,并根据遥感影像、高程控制点等对淀区内受人为影响的局部区域进行校正,插值生成白洋淀湿地底部的数字高程模型(DEM)。选用遥感影像和地面高程控制点对构建的数字高程模型进行验证,遥感影像验证精度在80%以上,地面控制点验证误差在±0.5 m以内的点达到80%。这种由一系列遥感影像提取等高线生成数字高程模型的方法可以弥补白洋淀湿地内数字高程信息不足的缺陷,对于提高白洋淀湿地的水均衡计算和构建湖泊与地下水耦合模型的精度有着重要意义。

关键词: Landsat影像, 白洋淀湿地, 淹没区, 等高线, 数字高程模型

Abstract:

Based on multi-temporal Landsat Remote Sensing imaging, a synthetic method suitable for extracting Baiyangdian Wetland was used. Considering the wetland range as the submerged area, and its boundary line is regarded as the contour line of the surface water level. According to remote sensing images, elevation control points, the regions affected by human activities in wetlands are adjusted, and the Digital Elevation Model (DEM) of the Baiyangdian Wetland is generated by interpolation. Through verifying the remote sensing images and ground elevation control points, the DEM accuracy is estimated to be over 80%, and the verifying error of the ground control point (-0.5 m to 0.5 m) reaches 80%. The DEM extraction from a series of remote sensing images can make up the defects of insufficient digital elevation information in the Baiyangdian Wetland. This study is important to improve the water balance calculation of the Baiyangdian wetland and the accuracy of the coupled model between the lake and groundwater.

Key words: Landsat image, Baiyangdian wetland, submerged area, contour line, Digital Elevation Model

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