Topic
Water scarcity
About: Water scarcity is a research topic. Over the lifetime, 11579 publications have been published within this topic receiving 228756 citations. The topic is also known as: water shortage.
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TL;DR: In this paper, the authors show that wildlife in the dry areas of the park utilizes effectively the water from natural and artificial waterholes dug in the sandy riverbed of the GRR.
Abstract: Provision of water to wildlife is crucial during dry season along the Great Ruaha River (GRR) in Ruaha National Park due to mismanagement of water resources upstream. This paper shows that wildlife in the dry areas of the park utilizes effectively the water from natural and artificial waterholes dug in the sandy riverbed of the GRR. Artificial water holes help alleviate the effects of artificial water shortage in the river, and because the location of the artificial water holes varies annually, the impact on the vegetation of aggregating herbivores around water holes was minimized. Water quality was comparable in natural and artificial water holes, and was the highest in holes dug by elephants in the sandy river bed.
71 citations
TL;DR: Wang et al. as discussed by the authors developed a water resource decoupling model to quantify the relationship between urban economic growth and water usage in China's top three megacities (Beijing, Shanghai, and Guangzhou).
71 citations
TL;DR: In this paper, an integrated modeling framework was proposed to dynamically evaluate and predict the water balance and water resources carrying capacity in a continental river basin of Northwest China by coupling the Soil and Water Assessment Tool (SWAT), water resources supply and consumption model, Principal Component Analysis (PCA) and Fuzzy Comprehensive Evaluation (FCE).
71 citations
TL;DR: In this article, the authors have discussed the implications of water scarcity and its implications for agriculture and food security, and proposed institutional changes for changing the trajectory of water use and productivity in agriculture.
Abstract: iv 1.0 Introduction 1 2.0 Water, Agricultural Production and Economic Growth 2 2.1 Water scarcity and its implications for agriculture and food security 6 2.2 Water resource degradation problems and impacts on food security 9 2.2.1 Groundwater depletion and its impact on food security 9 2.2.2. Water logging and salinity 11 2.3 Land degradation and food security impacts 12 2.4 Food security situation in India 14 3.0 Irrigation Technologies in the Hands of the Poor 15 3.1 Technologies to change the trajectory of irrigation development 15 3.2 Technologies to increase crop per drop 17 4.0 NRM Technologies for Sustainable Agricultural Production 19 5.0 Institutional Changes for Changing the Trajectory of Water Use and Productivity in Agriculture 22 5.1 Promoting equity and productivity in water use 22 5.2 Encouraging efficient use of water in agriculture 27 5.2.1 Pricing of irrigation water 27 5.2.2 Pricing of electricity in the farm sector 29 6.0 Concluding Remarks 31 Literature Cited 32
71 citations
TL;DR: Four perspectives regarding virtual water and water footprints are described, with the goal of demonstrating the inadequacies of these notions in policy discussions and in efforts to determine the optimal allocation and use of water resources.
71 citations