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A METHOD FOR MONITORING HYDROLOGICAL CONDITIONS BENEATH HERBACEOUS WETLANDS USING MULTI-TEMPORAL ALOS PALSAR COHERENCE DATA

  • [设施]:遥感飞机
  • [期刊/会议名称]:2015 International Workshop on Image and Data Fusion
  • [摘要]:Reed marshes, the world's most widespread type of wetland vegetation, are undergoing major changes as a result of climate changes and human activities. The presence or absence of water in reed marshes has a significant impact on the whole ecosystem and remains a key indicator to identify the effective area of a wetland and help estimate the degree of degeneration. Past studies have demonstrated the use of interferometric synthetic aperture radar (InSAR) to map water-level changes for flooded reeds. However, the identification of the different hydrological states of reed marshes is often poorly understood. The analysis given in this paper shows that L-band interferometric coherence is very sensitive to the water surface conditions beneath reed marshes and so it can be used as classifier. A method based on a statistical analysis of the coherence distributions for wet and dry reeds using InSAR pairs was, therefore, investigated in this study. The experimental results were validated by in-situ data and showed very good agreement. This is the first time that information about the water cover under herbaceous wetlands has been derived using interferometric coherence values. This method can also effectively and easily be applied to monitor the hydrological conditions beneath other herbaceous wetlands.
  • [发表日期]:2015
  • [第一作者]:张美美
  • [第一作者单位]:中科院航空遥感中心
  • [通讯作者]:李震
  • [通讯作者单位]:中科院航空遥感中心
  • [论文类型]:国际会议
  • [期刊分类]:REMOTE SENSING(SCI3区)
  • [学科分类]:
  • [影响因子]:1.573
  • [关键词]:
  • [卷号]:8
  • [期号]:6
  • [起止页码]:618-627
  • [简介]: