Resources Science ›› 2019, Vol. 41 ›› Issue (11): 2119-2130.doi: 10.18402/resci.2019.11.14

Previous Articles     Next Articles

Spatiotemporal change of coastal blue carbon and its service value evaluation:A case study of Jiaozhou Bay

SUI Yuzheng1, CHEN Xiaoxuan1, LI Shujuan2, SUN Dapeng1, MA Xinning1, ZHOU Tao3   

  1. 1. College of Architecture and Urban Planning of Qingdao University of Technology, Qingdao 266033, China
    2. School of Management, Oecan University of China, Qingdao 266100, China
    3. School of Environmental and Municipal Engineering of Qingdao University of Technology, Qingdao 266033, China
  • Received:2018-10-31 Revised:2019-03-26 Online:2019-11-25 Published:2019-12-03

Abstract:

Coastal blue carbon is a carbon pool similar to marine blue carbon and terrestrial green carbon, which has huge carbon sink potential and it is of important practical significance to study its carbon sequestration capacity. In this study, remote sensing data of the Jiaozhou Bay in 1997, 2007, and 2017 ,were used for interpretation and acquisition of coastal wetland data in the Jiaozhou Bay area by ArcGIS,.Based on the Integrated Valuation of Environmental Services and Tradeoffs(InVEST) model, this study evaluated the change of spatial and temporal patterns of blue carbon distribution and its service value in the Jiaozhou Bay coastal zone. The results show that: (1) In terms of time: the total blue carbon in 1997-2007 and 2007-2017 was 3.49 × 10 8 and 2.32 × 10 8 tons respectively, showing a decreasing trend. (2) Spatially, from 1997 to 2007, the maximum blue carbon was mainly distributed in the sub-tidal zone and the areas of reed, suaeda salsa, spartina and aquaculture ponds in Hetao, Shangma, Jiuhongtan, Jiulong Street, and in the areas of aquaculture ponds and reeds in Jiulong, Liuting, Jinghongtan and Shangma Street from 2007 to 2017. (3) The total value of blue carbon in the Jiaozhou Bay in recent 20 years is 8522.13×10 8 CNY, it is urgent to protect the coastal blue carbon ecosystem because of its huge carbon sink potential.

Key words: blue carbon, coastal zone, ecosystem service, InVEST model, spatiotemporal evolution, value evaluation, Jiaozhou Bay