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| Registros recuperados: 14 | |
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| Kendy, Eloise; Molden, David J.; Steenhuis, Tammo S.; Liu, Changming; Wang, Jinxia. |
| The report examines the relationships between agricultural policies in the North China Plain, the approaches to water management that evolved from them, the quantity of water that was actually used, and the consequent groundwater depletion beneath Luancheng County, Hebei Province, from 1949 to 2000. To systematically address these relationships, we use a comprehensive water-balance approach. Our results indicate that a single, longstanding policy-that of using groundwater to meet the crop-water requirements not supplied by precipitation-is responsible for the steady rate of groundwater decline. |
| Tipo: Report |
Palavras-chave: Agricultural production; Groundwater; Aquifers; Water shortage; Irrigation efficiency; Agricultural policy; Crop production; Wastewaters; Water management; Hydrology; Economic development; Crop yield; Cotton; Wheat; Sprinkler irrigation; Water conservation; Water use efficiency; Pumping; Water balance; Vegetables; Rural economy; Irrigated framing; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy. |
| Ano: 2003 |
URL: http://purl.umn.edu/44560 |
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| Rijsberman, Frank; Molden, David J.. |
| As much as seventy times more water is needed to grow food than for domestic use. Severely waterscarce countries such as Egypt do not have enough water to grow their own food and need to import food from elsewhere. Countries like the USA, Australia, China, India, Mexico and Turkey have made massive investments to build dams and develop irrigation systems. As a direct consequence, the famines predicted for India have not occurred and world food prices are lower than ever. But rivers are drying up, groundwater levels are falling dramatically, and water pollution is rampant near most Asian cities. All water that falls as rain serves a purpose in nature. If farmers don’t have an incentive to conserve water, over-use is the likely consequence and nature pays... |
| Tipo: Presentation |
Palavras-chave: Environmental Economics and Policy; Food Security and Poverty; Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/124461 |
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| Zhu, Zhongping; Giordano, Mark; Cai, Ximing; Molden, David J.; Hong, Shangchi; Zhang, Huiyan; Lian, Yu; Li, Huian; Zhang, Xuecheng; Zhang, Xinghai; Xue, Yunpeng. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Flood control; Water scarcity; Environmental degradation; Groundwater; Social aspects; River basin development; Water use efficiency; Crop production; Wetlands; Water pollution; Water policy; Reforms; Water quality; Flood plains; Crop Production/Industries; Environmental Economics and Policy; Resource /Energy Economics and Policy; Risk and Uncertainty. |
| Ano: 2003 |
URL: http://purl.umn.edu/92661 |
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| Registros recuperados: 14 | |
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