Coastal and marine ecological changes and fish cage culture development in Phu Quoc, Vietnam (2001 to 2011)

Diep Thi Hong Nguyen, Nitin Kumar Tripathi, Wenresti G. Gallardo, Taravudh Tipdecho

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study employed image enhancement for LANDSAT TM and ALOS imagery to monitor the changing status of coastal resources from 2001 to 2011, object-based classification of high-resolution THEOS imagery to extract fish cage culture sites and interpolation methods to determine marine environmental quality in 2011 in the northern part of Phu Quoc Island. There were five classes in the study site: natural forest, Melaleuca forest, agriculture, peat and built-up areas. Agricultural land and Melaleuca forest changing into built-up areas constituted approximately 51.13% of the total area changing. The benthic seagrass habitat increased dramatically from 2001 to the end of 2010. Besides, marine culture has been concerned to cage culture which is one of the sources directly affecting aquatic life and water quality in coastal environment. Cage culture locations were detected using high-resolution imagery as THEOS data for image fusion and Object-based Image Analysis methods. Water quality criteria including nitrogen, phosphorus and chlorophyll-a concentrations were determined by interpolation method, and the spatial distribution of these parameters showed a concentration in the study area in the range from 0.17 to 0.49 mg/L, 0.012 to 0.073 mg/L and 0.26 to 1.046 μg/L, respectively.

Original languageEnglish
Pages (from-to)486-506
Number of pages21
JournalGeocarto International
Volume29
Issue number5
DOIs
Publication statusPublished - 2014

Fingerprint

cage culture
Vietnam
imagery
interpolation
fish
water quality
ALOS
seagrass
environmental quality
image analysis
water
coastal zone
peat
chlorophyll a
agricultural land
spatial distribution
phosphorus
habitat
agriculture
nitrogen

Keywords

  • cage culture
  • change detection
  • coastal zone
  • GIS
  • marine environment
  • remote sensing
  • seagrass
  • water quality

ASJC Scopus subject areas

  • Water Science and Technology
  • Geography, Planning and Development

Cite this

Coastal and marine ecological changes and fish cage culture development in Phu Quoc, Vietnam (2001 to 2011). / Nguyen, Diep Thi Hong; Tripathi, Nitin Kumar; Gallardo, Wenresti G.; Tipdecho, Taravudh.

In: Geocarto International, Vol. 29, No. 5, 2014, p. 486-506.

Research output: Contribution to journalArticle

Nguyen, Diep Thi Hong ; Tripathi, Nitin Kumar ; Gallardo, Wenresti G. ; Tipdecho, Taravudh. / Coastal and marine ecological changes and fish cage culture development in Phu Quoc, Vietnam (2001 to 2011). In: Geocarto International. 2014 ; Vol. 29, No. 5. pp. 486-506.
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