Abstract
Efficient management of water resources in paddy fields requires an understanding of the volume of supplementary water used. However, quantifying the volume is laborious due to the large amount of data that must be collected and analyzed. The purpose of our study was to estimate the volume of supplementary water used in paddy fields, based on several years of available statistical data, and to provide information on how much water can be supplied to paddy fields in each target area. In this study, the lower Mekong River basin of northeast Thailand, Laos, and Cambodia was selected as the study area. In the first step, we used agricultural statistics for each country, rainfall data acquired from the Mekong River Commission Secretariat (MRCS), and the value of virtual water required per unit of rice production. Because several years of data were used for dry season harvested areas and rice production in each country, the supplementary water to paddy fields in each province was calculated using virtual water and rainfall. This method made it possible to estimate changes in supplementary water in each province. Through this study, the supplementary water to paddy fields during the dry season in three countries was approximated from the minimum number of data sets. Moreover, for cases in which it is not possible to procure agricultural water use data for a hydrological model simulation, an alternative solution is proposed.
| Original language | English |
|---|---|
| Pages (from-to) | 177-186 |
| Number of pages | 10 |
| Journal | Paddy and Water Environment |
| Volume | 3 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Sep 1 2005 |
| Externally published | Yes |
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Keywords
- Cambodia
- Laos
- Monsoon Asia
- Rice production
- Thailand
- Virtual water
- Water use
ASJC Scopus subject areas
- Agronomy and Crop Science
Cite this
Estimation of supplementary water to paddy fields in the lower Mekong River basin during the dry season. / Somura, Hiroaki; Tanji, Hajime; Yoshida, Koshi; Toda, Osamu; Higuchi, Katsuhiro.
In: Paddy and Water Environment, Vol. 3, No. 3, 01.09.2005, p. 177-186.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Estimation of supplementary water to paddy fields in the lower Mekong River basin during the dry season
AU - Somura, Hiroaki
AU - Tanji, Hajime
AU - Yoshida, Koshi
AU - Toda, Osamu
AU - Higuchi, Katsuhiro
PY - 2005/9/1
Y1 - 2005/9/1
N2 - Efficient management of water resources in paddy fields requires an understanding of the volume of supplementary water used. However, quantifying the volume is laborious due to the large amount of data that must be collected and analyzed. The purpose of our study was to estimate the volume of supplementary water used in paddy fields, based on several years of available statistical data, and to provide information on how much water can be supplied to paddy fields in each target area. In this study, the lower Mekong River basin of northeast Thailand, Laos, and Cambodia was selected as the study area. In the first step, we used agricultural statistics for each country, rainfall data acquired from the Mekong River Commission Secretariat (MRCS), and the value of virtual water required per unit of rice production. Because several years of data were used for dry season harvested areas and rice production in each country, the supplementary water to paddy fields in each province was calculated using virtual water and rainfall. This method made it possible to estimate changes in supplementary water in each province. Through this study, the supplementary water to paddy fields during the dry season in three countries was approximated from the minimum number of data sets. Moreover, for cases in which it is not possible to procure agricultural water use data for a hydrological model simulation, an alternative solution is proposed.
AB - Efficient management of water resources in paddy fields requires an understanding of the volume of supplementary water used. However, quantifying the volume is laborious due to the large amount of data that must be collected and analyzed. The purpose of our study was to estimate the volume of supplementary water used in paddy fields, based on several years of available statistical data, and to provide information on how much water can be supplied to paddy fields in each target area. In this study, the lower Mekong River basin of northeast Thailand, Laos, and Cambodia was selected as the study area. In the first step, we used agricultural statistics for each country, rainfall data acquired from the Mekong River Commission Secretariat (MRCS), and the value of virtual water required per unit of rice production. Because several years of data were used for dry season harvested areas and rice production in each country, the supplementary water to paddy fields in each province was calculated using virtual water and rainfall. This method made it possible to estimate changes in supplementary water in each province. Through this study, the supplementary water to paddy fields during the dry season in three countries was approximated from the minimum number of data sets. Moreover, for cases in which it is not possible to procure agricultural water use data for a hydrological model simulation, an alternative solution is proposed.
KW - Cambodia
KW - Laos
KW - Monsoon Asia
KW - Rice production
KW - Thailand
KW - Virtual water
KW - Water use
UR - http://www.scopus.com/inward/record.url?scp=27744514401&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27744514401&partnerID=8YFLogxK
U2 - 10.1007/s10333-005-0015-5
DO - 10.1007/s10333-005-0015-5
M3 - Article
AN - SCOPUS:27744514401
VL - 3
SP - 177
EP - 186
JO - Paddy and Water Environment
JF - Paddy and Water Environment
SN - 1611-2490
IS - 3
ER -