نتایج جستجو برای: water resource

تعداد نتایج: 750498  

Journal: :Ecology 2013
Caroline E Farrior David Tilman Ray Dybzinski Peter B Reich Simon A Levin Stephen W Pacala

Almost all models of plant resource limitation are grounded in either one or both of two simple conceptual models: Liebig's Minimum Hypothesis (LMH), the idea that plants are limited by the resource in shortest supply, and the Multiple Limitation Hypothesis (MLH), the idea that plants should adjust to their environment so that all essential resources are equally limiting. Despite the difference...

2010
Rick Rheingans

The course examines natural resource issues affecting developing countries, and explores the impacts on communities, households, their decisions, and their health. Key resource use issues include water use (drinking, sanitation, and irrigation), agriculture (intensification, pesticide use, and land degradation), fuel wood scarcity, deforestation, conservation, and mining. For each of these issu...

2014
Rida Farida Muhammad Ali Ramdhani

This research is aimed at analizing the effect of environmental management policy implementation on water pollution control to improve the environmental quality. The analytical method used is this study is a literature review that uses effectual causal analysis approach based on literature review, with the object of research conducted in Garut District, Indonesia. The result of discussion shows...

2016
PAO-YU OEI

Political instability of several countries in the Middle East is overshadowing one of the biggest challenges of the upcoming century: Water a natural resource that is easily taken for granted, but whose scarcity might lead to serious conflicts. This paper investigates an optimal Water Allocation of the Tigris and Euphrates Rivershed by introducing the WATER-Model. A series of scenarios are anal...

2018

Planning, designing, and managing water resource systems today inevitably involve impact prediction. Impact prediction can be aided by the use of models. While acknowledging the increasingly important role of modeling in water resource planning and management, we also acknowledge the inherent limitation of models as representations of any real system. Model structure, input data, objectives, an...

2015
Jorge García Molinos Mafalda Viana Michael Brennan Ian Donohue

Lakes are disproportionately important ecosystems for humanity, containing 77% of the liquid surface freshwater on Earth and comprising key contributors to global biodiversity. With an ever-growing human demand for water and increasing climate uncertainty, there is pressing need for improved understanding of the underlying patterns of natural variability of water resources and consideration of ...

2016
Jingya Liu Jing Li Ziyi Gao Min Yang Keyu Qin Xiaonan Yang

Global climate and environmental changes are endangering global water resources; and several approaches have been tested to manage and reduce the pressure on these decreasing resources. This study uses the case study of Xi'an City in China to test reasonable and effective methods to address water resource shortages. The study generated a framework combining ecosystem services and water resource...

Journal: :Ecology 2007
John Maron Marilyn Marler

Human modification of the environment is causing both loss of species and changes in resource availability. While studies have examined how species loss at the local level can influence invasion resistance, interactions between species loss and other components of environmental change remain poorly studied. In particular, the manner in which native diversity interacts with resource availability...

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