Developing land-state maps of Tram Chim National Park in Vietnam based on monitoring results

Cadastre

UDC:

528.7+332.334

DOI:

10.22389/0016-7126-2020-963-9-53-64

1 Kovyazin V.F.

2 Dang Thi Lan Anh

3 Dang Viet Hung

Year:

2020

№:

963

Pages:

53-64

Saint-Petersburg Mining University

1,

2,

Vietnam National University of Forestry

3,

Abstract:

Tram Chim National Park in Southern Vietnam is a wetland area included in the system of specially protected natural areas (SPNA). For the purposes of land monitoring, we studied Landsat-5 and Sentinel-2B images obtained in 1991, 2006 and 2019. The methods of normalized difference vegetation index (NDVI) and water objects – normalized difference water index (NDWI) were used to estimate the vegetation in National Park. The allocated land is classifi ed by the maximum likelihood method in ENVI 5.3 into categories. For each image, a statistical analysis of the land after classifi cation was performed. Between 1991 and 2019, land changes occurred in about 57 % of the Tram Chim National Park total area. As a result, the wetland area has signifi cantly reduced there due to climate change. However, the area of Melaleuca forests in Tram Chim National Park has increased due to the effi ciency of reforestation in protected areas. Melaleuca forests are also being restored.

Keywords:

Tram Chim National Park, land cover maps, satellite imagery

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Citation:

Kovyazin V.F.,

Dang Thi Lan Anh,

Dang Viet Hung,

(2020) Developing land-state maps of Tram Chim National Park in Vietnam based on monitoring results. Geodesy and cartography = Geodezia i Kartografia, 81(9), pp. 53-64. (In Russian). DOI: 10.22389/0016-7126-2020-963-9-53-64