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Assessment of Cropland Changes Due to New Canals in Vientiane Prefecture of Laos using Earth Observation Data

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Relation http://oar.icrisat.org/12135/
https://www.sciencedirect.com/science/article/pii/S2772375522001137
https://doi.org/10.1016/j.atech.2022.100149
 
Title Assessment of Cropland Changes Due to New Canals in Vientiane Prefecture of Laos using Earth Observation Data
 
Creator Gumma, M K
Takashi, Y
Panjala, P
Deevi, K C
Inthavong, V
Bellam, P K
Mohammed, I
 
Subject GIS Techniques/Remote Sensing
Irrigation
 
Description The lower catchment area of a Mak Hiao river system is vulnerable to flash floods and water stress. So it is
important to construct irrigation structures in this area to minimize floods during the rainy season and store
water for the winter season. The Asian Development Bank (ADB) has been supporting the Government of Laos in
constructing such small reservoirs like Donkhuay schemes 1 & 2, Mak Hiao, Nalong 3 and Sang Houabor projects
in lower catchment areas. Our study evaluated the impacts of small irrigation schemes in terms of land-use/landcover
(LULC), crop intensity, and productivity changes, using high resolution satellite imagery, socioeconomic,
and ground data. We analyzed the temporal cropping pattern in the Vientiane prefecture of Laos using Planet and
Sentinel-2 data. On the other hand, crop intensity and cropland changes were mapped using Sentinel-2 data and
spectral matching techniques (SMTs). The crop classification accuracy based on field-plot data was 88.6%. Our
results show that irrigation projects in the lower catchment areas brought about significant on-site changes in
terms of cropland expansion and increased crop intensity. Remarkable changes in LULC were observed especially
in the command areas owing to an increase of about 300% in crop area with access to irrigation and increase of
water bodies by 31%. Our study found that interventions at the level of the command area do improved on-site
soil, water and environmental services. They study emphasized underline the role of land-use regulations in
reducing pressure on natural land-use systems and thereby serving the major goal of up-scaling sustainable
natural resource management. The study documented the vital role of small/medium irrigation projects in
restoring ecosystem services such as cropping patterns and LULC conversion
 
Publisher Elsevier
 
Date 2022-12-09
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12135/1/Smart%20Agricultural%20Technology_4_01-11_2023.pdf
Gumma, M K and Takashi, Y and Panjala, P and Deevi, K C and Inthavong, V and Bellam, P K and Mohammed, I (2022) Assessment of Cropland Changes Due to New Canals in Vientiane Prefecture of Laos using Earth Observation Data. Smart Agricultural Technology, 4. 01-11. ISSN 2772-3755