Abstract
Agricultural use of wetlands is important for food security in various regions. However, land-use changes in wetland areas could alter the water cycle and the ecosystem. To conserve the water environments of wetlands, care is needed when introducing new cropping systems. This study is the first attempt to evaluate the water dynamics in the case of the introduction of rice-millet mixed-cropping systems to the Cuvelai system seasonal wetlands (CSSWs) in north-central Namibia. We first investigated seasonal changes in surface water coverage by using satellite remote sensing data. We also assessed the effect of the introduction of rice-millet mixed-cropping systems on é vapotranspiration in the CSSWs region. For the former investigation, we used MODIS and AMSR-E satellite remote sensing data. These data showed that at the beginning of the wet season, surface water appears from the southern (lower) part and then expands to the northern (higher) part of the CSSWs. For the latter investigation, we used data obtained by the classical Bowen ratio-energy balance (BREB) method at an experimental field site established in September 2012 on the Ogongo campus, University of Namibia. This analysis showed the importance of water and vegetation conditions when introducing mixed-cropping to the region.Grant: Acknowledgements: This study was supported by an international research/development (R/D) project of the Science and Technology Research Partnership for Sustainable Development (SATREPS) entitled "Flood- and drought-adaptive cropping systems to conserve water environments in semi-arid regions" (P.I.: M. Iijima). We thank the Japan Science and Technology Agency (JST) and the Japan International Cooperation Agency (JICA) for their kind coordination. We also thank all members of the Faculty of Agriculture and Natural Resources, University of Namibia (UNAM), for kindly collaborating with our research.
| Original language | English |
|---|---|
| Title of host publication | Evolving Water Resources Systems |
| Subtitle of host publication | Understanding, Predicting and Managing Water-Society Interactions - Proceedings of ICWRS 2014 |
| Publisher | IAHS Press |
| Pages | 380-385 |
| Number of pages | 6 |
| ISBN (Print) | 9781907161421 |
| Publication status | Published - Jan 1 2014 |
| Externally published | Yes |
| Event | Bologna IAHS 2014 - 6th IAHS-EGU International Symposium on Integrated Water Resources Management - Bologna, Italy Duration: Jun 4 2014 → Jun 6 2014 |
Publication series
| Name | IAHS-AISH Proceedings and Reports |
|---|---|
| Volume | 364 |
| ISSN (Print) | 0144-7815 |
Other
| Other | Bologna IAHS 2014 - 6th IAHS-EGU International Symposium on Integrated Water Resources Management |
|---|---|
| Country | Italy |
| City | Bologna |
| Period | 6/4/14 → 6/6/14 |
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All Science Journal Classification (ASJC) codes
- Earth and Planetary Sciences(all)
Cite this
Evaluation of surface water dynamics for water-food security in seasonal wetlands, north-central Namibia. / Hiyama, Tetsuya; Suzuki, Tetsuji; Hanamura, Miho; Mizuochi, Hiroki; Kambatuku, Jack R.; Niipele, Johanna N.; Fujioka, Yuichiro; Ohta, Takeshi; Iijima, Morio.
Evolving Water Resources Systems: Understanding, Predicting and Managing Water-Society Interactions - Proceedings of ICWRS 2014. IAHS Press, 2014. p. 380-385 (IAHS-AISH Proceedings and Reports; Vol. 364).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Evaluation of surface water dynamics for water-food security in seasonal wetlands, north-central Namibia
AU - Hiyama, Tetsuya
AU - Suzuki, Tetsuji
AU - Hanamura, Miho
AU - Mizuochi, Hiroki
AU - Kambatuku, Jack R.
AU - Niipele, Johanna N.
AU - Fujioka, Yuichiro
AU - Ohta, Takeshi
AU - Iijima, Morio
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Agricultural use of wetlands is important for food security in various regions. However, land-use changes in wetland areas could alter the water cycle and the ecosystem. To conserve the water environments of wetlands, care is needed when introducing new cropping systems. This study is the first attempt to evaluate the water dynamics in the case of the introduction of rice-millet mixed-cropping systems to the Cuvelai system seasonal wetlands (CSSWs) in north-central Namibia. We first investigated seasonal changes in surface water coverage by using satellite remote sensing data. We also assessed the effect of the introduction of rice-millet mixed-cropping systems on é vapotranspiration in the CSSWs region. For the former investigation, we used MODIS and AMSR-E satellite remote sensing data. These data showed that at the beginning of the wet season, surface water appears from the southern (lower) part and then expands to the northern (higher) part of the CSSWs. For the latter investigation, we used data obtained by the classical Bowen ratio-energy balance (BREB) method at an experimental field site established in September 2012 on the Ogongo campus, University of Namibia. This analysis showed the importance of water and vegetation conditions when introducing mixed-cropping to the region.Grant: Acknowledgements: This study was supported by an international research/development (R/D) project of the Science and Technology Research Partnership for Sustainable Development (SATREPS) entitled "Flood- and drought-adaptive cropping systems to conserve water environments in semi-arid regions" (P.I.: M. Iijima). We thank the Japan Science and Technology Agency (JST) and the Japan International Cooperation Agency (JICA) for their kind coordination. We also thank all members of the Faculty of Agriculture and Natural Resources, University of Namibia (UNAM), for kindly collaborating with our research.
AB - Agricultural use of wetlands is important for food security in various regions. However, land-use changes in wetland areas could alter the water cycle and the ecosystem. To conserve the water environments of wetlands, care is needed when introducing new cropping systems. This study is the first attempt to evaluate the water dynamics in the case of the introduction of rice-millet mixed-cropping systems to the Cuvelai system seasonal wetlands (CSSWs) in north-central Namibia. We first investigated seasonal changes in surface water coverage by using satellite remote sensing data. We also assessed the effect of the introduction of rice-millet mixed-cropping systems on é vapotranspiration in the CSSWs region. For the former investigation, we used MODIS and AMSR-E satellite remote sensing data. These data showed that at the beginning of the wet season, surface water appears from the southern (lower) part and then expands to the northern (higher) part of the CSSWs. For the latter investigation, we used data obtained by the classical Bowen ratio-energy balance (BREB) method at an experimental field site established in September 2012 on the Ogongo campus, University of Namibia. This analysis showed the importance of water and vegetation conditions when introducing mixed-cropping to the region.Grant: Acknowledgements: This study was supported by an international research/development (R/D) project of the Science and Technology Research Partnership for Sustainable Development (SATREPS) entitled "Flood- and drought-adaptive cropping systems to conserve water environments in semi-arid regions" (P.I.: M. Iijima). We thank the Japan Science and Technology Agency (JST) and the Japan International Cooperation Agency (JICA) for their kind coordination. We also thank all members of the Faculty of Agriculture and Natural Resources, University of Namibia (UNAM), for kindly collaborating with our research.
UR - http://www.scopus.com/inward/record.url?scp=84904805495&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904805495&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84904805495
SN - 9781907161421
T3 - IAHS-AISH Proceedings and Reports
SP - 380
EP - 385
BT - Evolving Water Resources Systems
PB - IAHS Press
ER -