Evaluation of ASTER Data Use in Land Use Study in the Mekong delta

The Mekong Delta in the south of Vietnam is a highly dynamic landscape with rapid changes in land use. Costal forests of mangrove (Rhizophoraceae, onneratiaceae and Avicenniaceae) and the more inland Melaleuca forests are changed into shrimp ponds and rice fields. The complex crop calendar and the...

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Main Authors: Pham, Van Cu, Lieng, Einar, Le, Thanh Hoa, Watanabe, Hiroshi
Format: Article
Language:English
Published: VNU 2014
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Online Access:http://repository.vnu.edu.vn/handle/11126/4526
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Institution: Vietnam National University, Hanoi
Language: English
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spelling oai:112.137.131.14:11126-45262017-08-11T04:55:04Z Evaluation of ASTER Data Use in Land Use Study in the Mekong delta Pham, Van Cu Lieng, Einar Le, Thanh Hoa Watanabe, Hiroshi ASTER Land Mekong The Mekong Delta in the south of Vietnam is a highly dynamic landscape with rapid changes in land use. Costal forests of mangrove (Rhizophoraceae, onneratiaceae and Avicenniaceae) and the more inland Melaleuca forests are changed into shrimp ponds and rice fields. The complex crop calendar and the diversification of land use types strongly influenced by the agriculture product market createa very complicated land use practice in the Mekong Delta. This increases costal erosion andgives a local rise in temperature. Human activities also increase the risk of forest fires, and corridors are therefore made to protect the remaining forests. Monitoring these changes accurately with a low cost is essential. Existing maps are inaccurate and not updated. ASTER data have a high spatial and radiometric resolution and can be acquired at alow cost. We seek a methodology to optimize differentiation between rice, grassland and forest, forest types, soil types and rice growth stages. Characteristics of each band, band combinations and band ratios are examined. Thermal channels are also used in these combinations to monitor human activities. 2014-03-18T02:29:24Z 2015-08-14T06:08:29Z 2014-03-18T02:29:24Z 2015-08-14T06:08:29Z 2007 Article p. 28-37 http://repository.vnu.edu.vn/handle/11126/4526 en application/pdf VNU
institution Vietnam National University, Hanoi
building VNU Library & Information Center
country Vietnam
collection VNU Digital Repository
language English
topic ASTER
Land
Mekong
spellingShingle ASTER
Land
Mekong
Pham, Van Cu
Lieng, Einar
Le, Thanh Hoa
Watanabe, Hiroshi
Evaluation of ASTER Data Use in Land Use Study in the Mekong delta
description The Mekong Delta in the south of Vietnam is a highly dynamic landscape with rapid changes in land use. Costal forests of mangrove (Rhizophoraceae, onneratiaceae and Avicenniaceae) and the more inland Melaleuca forests are changed into shrimp ponds and rice fields. The complex crop calendar and the diversification of land use types strongly influenced by the agriculture product market createa very complicated land use practice in the Mekong Delta. This increases costal erosion andgives a local rise in temperature. Human activities also increase the risk of forest fires, and corridors are therefore made to protect the remaining forests. Monitoring these changes accurately with a low cost is essential. Existing maps are inaccurate and not updated. ASTER data have a high spatial and radiometric resolution and can be acquired at alow cost. We seek a methodology to optimize differentiation between rice, grassland and forest, forest types, soil types and rice growth stages. Characteristics of each band, band combinations and band ratios are examined. Thermal channels are also used in these combinations to monitor human activities.
format Article
author Pham, Van Cu
Lieng, Einar
Le, Thanh Hoa
Watanabe, Hiroshi
author_facet Pham, Van Cu
Lieng, Einar
Le, Thanh Hoa
Watanabe, Hiroshi
author_sort Pham, Van Cu
title Evaluation of ASTER Data Use in Land Use Study in the Mekong delta
title_short Evaluation of ASTER Data Use in Land Use Study in the Mekong delta
title_full Evaluation of ASTER Data Use in Land Use Study in the Mekong delta
title_fullStr Evaluation of ASTER Data Use in Land Use Study in the Mekong delta
title_full_unstemmed Evaluation of ASTER Data Use in Land Use Study in the Mekong delta
title_sort evaluation of aster data use in land use study in the mekong delta
publisher VNU
publishDate 2014
url http://repository.vnu.edu.vn/handle/11126/4526
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