نتایج جستجو برای: water resources

تعداد نتایج: 794146  

Journal: :The Science of the total environment 2012
I Juwana N Muttil B J C Perera

In the past few decades, there have been extensive efforts on measuring sustainability. One example is the development of assessment tools based on sustainability indicators. Several individuals and organisations have suggested various indices for assessing sustainability. This paper focuses on the review of water sustainability assessment using the indicator-based approach. It discusses major ...

2016
Rodolfo Metulini Stefania Tamea Francesco Laio Massimo Riccaboni

Disentangling the relations between human migrations and water resources is relevant for food security and trade policy in water-scarce countries. It is commonly believed that human migrations are beneficial to the water endowments of origin countries for reducing the pressure on local resources. We show here that such belief is over-simplistic. We reframe the problem by considering the interna...

Journal: :Journal of environmental quality 2006
David J Lewis Michael J Singer Randy A Dahlgren Kenneth W Tate

Long-term water quality records for assessing natural variability, impact of management, and that guide regulatory processes to safeguard water resources are rare for California oak woodland rangelands. This study presents a 20-yr record (1981-2000) of nitrate-nitrogen (NO(3)-N) and suspended sediment export from a typical, grazed oak woodland watershed (103 ha) in the northern Sierra Nevada fo...

2006
B. Nilsson

Uncertainty in conceptual model structure and in environmental data is of essential interest when dealing with uncertainty in water resources management. To make quantification of uncertainty possible is it necessary to identify and characterise the uncertainty in geological and hydrogeological data. This paper discusses a range of available techniques to describe the uncertainty related to geo...

2015
Y. Hong J. P. Wang D. Q. Li Z. J. Cao P. Cui

a College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China b Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology, Kowloon, HKSAR, China c State Key Laboratory of Water Resources and Hydropower Engineering Science, School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan, China d Key Laboratory of Mount...

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 ...

2015
Xinyang Yu Changhe Lu

Accurately mapping and monitoring glacier changes over decades is important for providing information to support sustainable use of water resource in arid regions of northwest China. Since 1970, glaciers in the Eastern Altun Mountains showed remarkable recession. Further study is indispensable to indicate the extent and amplitude of glacial change at basin and individual glacier scale. In this ...

Journal: :Environmental management 2008
Lilian Alessa Andrew Kliskey Richard Lammers Chris Arp Dan White Larry Hinzman Robert Busey

People in the Arctic face uncertainty in their daily lives as they contend with environmental changes at a range of scales from local to global. Freshwater is a critical resource to people, and although water resource indicators have been developed that operate from regional to global scales and for midlatitude to equatorial environments, no appropriate index exists for assessing the vulnerabil...

2016
Michael Schnegg Michael Bollig Theresa Linke

In the course of decentralization, pastoral communities in Namibia have had to find new ways to share their most salient resource, water, and the costs involved in providing it. Using data from sixty communities, we examine (1) whether and to what extent different sharing rules emerge, (2) how variations can be explained, (3) how rules are perceived and influence success, and (4) what economic ...

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