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Estimating reclamation-induced carbon loss in coastal wetlands using time series GF-1 WVF data: A case study in the Yangtze Estuary

  • Jinquan Ai
  • , Zhiqiang Gao
  • , Chao Zhang
  • , Wei Gao
  • , Runhe Shi*
  • , Debin Song
  • , Fuxiang Xu
  • , Maosi Chen
  • *Corresponding author for this work
  • East China Normal University
  • CAS - Yantai Institute of Coastal Research for Sustainable Development
  • Colorado State University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Coastal wetland is a net carbon sink with a high carbon density. However, coastal reclamation directly changes the structure of coastal wetland ecosystem and consequent carbon sink function. The aim of this work was to estimate the reclamation-induced carbon loss in coastal wetlands using time series GF-1 WVF data. For this purpose, GF-1 WVF imageries of 2013 (before reclamation) and 2017 (after reclamation) in the Yangtze Estuary were collected and analyzed combined with field monitoring. Results showed that the converted coastal wetland area occupied up to 61.60% between 2013 and 2017. Carbon estimation indicated that the coastal wetland before reclamation had greater potential contribution to the global warming mitigation than the wetland reclamation to other land cover types. Finally the vulnerability of carbon stores and uncertain analysis with remote sensing technology in coastal wetlands environment were discussed. We emphasized that long-term monitoring of coastal wetlands and its carbon dynamic are urgently needed, because so many uncertain factors exist in short-term monitoring.

Original languageEnglish
Title of host publicationRemote Sensing and Modeling of Ecosystems for Sustainability XIV
EditorsJinnian Wang, Wei Gao, Ni-Bin Chang
PublisherSPIE
ISBN (Electronic)9781510612679
DOIs
StatePublished - 2007
EventRemote Sensing and Modeling of Ecosystems for Sustainability XIV 2017 - San Diego, United States
Duration: 9 Aug 2017 → …

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10405
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceRemote Sensing and Modeling of Ecosystems for Sustainability XIV 2017
Country/TerritoryUnited States
CitySan Diego
Period9/08/17 → …

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 15 - Life on Land
    SDG 15 Life on Land

Keywords

  • carbon
  • coastal wetlands
  • land use and land cover
  • object-based image analysis
  • reclamation
  • remote sensing

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