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结果 11-20 的 227
The Nexus of Food, Energy, and Water 全文
2014
Finley, John W. | Seiber, James N.
The Earth’s population is expected to exceed 9 billion by 2050, posing significant challenges in meeting human needs while minimally affecting the environment. To support this population, we will need secure and safe sources of food, energy, and water. The nexus of food, energy, and water is one of the most complex, yet critical, issues that face society. There is no more land to exploit, and the supply of fresh water in some areas of the world limits the use of land for food. All solutions must also deal with the overlay of global climate change. Meeting current and future populations needs will require security in food, energy, and water supplies. A nexus approach is needed to improve food, energy, and water security integrating the management of the limited resources while transitioning to a more “green” economy, which provides adequate food, energy, and water for the expanding human population.
显示更多 [+] 显示较少 [-]Integrated food and water research for development 全文
2014
kim geheb | annette huber-lee | larry w. harrington | sophie nguyen khoa | alain vidal | pamela george | boru douthwaite | jonathan n. woolley
Jonathan N. Woolley et al., 'Integrated food and water research for development', 2014
显示更多 [+] 显示较少 [-]Food, water and oil: The hidden link 全文
2014
colin j. chartres
Colin J. Chartres, 'Food, water and oil: The hidden link', 2014
显示更多 [+] 显示较少 [-]Water for food in Bangladesh: outlook to 2030 全文
2014
Amarasinghe, Upali A. | Sharma, Bharat R. | Muthuwatta, Lal | Khan, Z. H.
Water for food in Bangladesh: outlook to 2030 全文
2014
Amarasinghe, Upali A. | Sharma, Bharat R. | Muthuwatta, Lal | Khan, Z. H.
This research study shows that ‘business-as-usual’ scenarios will have substantial production surpluses of rice, which dominates water use patterns in the country at present. However, the surpluses come at a considerable environmental cost, due to high levels of groundwater depletion. Bangladesh can mitigate potential groundwater crises by limiting rice production to meet the requirements of self-sufficiency. Increases in water productivity of both Aman (wet season) and Boro (dry season) rice production can help too. A carefully designed deficit irrigation regime for Boro rice can also increase transpiration, yield, water productivity and production, and reduce the pressure on scarce groundwater resources.
显示更多 [+] 显示较少 [-]Water for food in Bangladesh: outlook to 2030 全文
2014
Amarasinghe, Upali A. | Sharma, Bharat R. | Muthuwatta, Lal P. | Khan, Z.H.
This research study shows that ‘business-as-usual’ scenarios will have substantial production surpluses of rice, which dominates water use patterns in the country at present. However, the surpluses come at a considerable environmental cost, due to high levels of groundwater depletion. Bangladesh can mitigate potential groundwater crises by limiting rice production to meet the requirements of self-sufficiency. Increases in water productivity of both Aman (wet season) and Boro (dry season) rice production can help too. A carefully designed deficit irrigation regime for Boro rice can also increase transpiration, yield, water productivity and production, and reduce the pressure on scarce groundwater resources.
显示更多 [+] 显示较少 [-]Priorities for the water, food and environment theme 全文
2014
frank rijsberman | nadia manning-thomas
Frank Rijsberman, Nadia Manning-Thomas, 'Priorities for the water, food and environment theme', 2014
显示更多 [+] 显示较少 [-]Meeting water needs for food and environmental security 全文
2014
david j. molden
David J. Molden, 'Meeting water needs for food and environmental security', 2014
显示更多 [+] 显示较少 [-]Introduction: water, food and poverty in river basins 全文
2014
m. fisher | simon e. cook
M. Fisher, Simon E. Cook, 'Introduction: water, food and poverty in river basins', 2014
显示更多 [+] 显示较少 [-]Water for food, water for life: a comprehensive assessment of water management in agriculture: summary. In Mandarin 全文
2014
s david
S David, 'Water for food, water for life: a comprehensive assessment of water management in agriculture: summary. In Mandarin', International Water Management Institute (IWMI); Earthscan, 2014
显示更多 [+] 显示较少 [-]Water as a trophic currency in dryland food webs 全文
2014
Allen, Daniel C. | McCluney, Kevin E | Elser, Stephen R | Sabo, John L
Water is essential for life on Earth, yet little is known about how water acts as a trophic currency, a unit of value in determining species interactions in terrestrial food webs. We tested the relative importance of groundwater and surface water in riparian food webs by manipulating their availability in dryland floodplains. Primary consumers (crickets) increased in abundance in response to added surface water and groundwater (contained in moist leaves), and predators (spiders and lizards) increased in abundance in response to added surface water, in spite of the presence of a river, an abundant water source. Moreover, the relative magnitude of organism responses to added water was greatest at the most arid site and lowest at the least arid site, mirroring cricket recruitment, which was greatest at the least arid site and lowest at the most arid site. These results suggest that water may be a key currency in terrestrial dryland food webs, which has important implications for predicting ecosystem responses to human‐ and climate‐related changes in hydrology and precipitation.
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