scholarly journals Four billion people facing severe water scarcity

2016 ◽  
Vol 2 (2) ◽  
pp. e1500323 ◽  
Author(s):  
Mesfin M. Mekonnen ◽  
Arjen Y. Hoekstra

Freshwater scarcity is increasingly perceived as a global systemic risk. Previous global water scarcity assessments, measuring water scarcity annually, have underestimated experienced water scarcity by failing to capture the seasonal fluctuations in water consumption and availability. We assess blue water scarcity globally at a high spatial resolution on a monthly basis. We find that two-thirds of the global population (4.0 billion people) live under conditions of severe water scarcity at least 1 month of the year. Nearly half of those people live in India and China. Half a billion people in the world face severe water scarcity all year round. Putting caps to water consumption by river basin, increasing water-use efficiencies, and better sharing of the limited freshwater resources will be key in reducing the threat posed by water scarcity on biodiversity and human welfare.

Author(s):  
Sushma Rewal Chugh ◽  
Chander Mohan Parsheera

China and India are the two world's most populous Asian countries. Together they constitute about 40% of the total global population. Both the Asian countries have remarkable similarities. India and China boast of having a very ancient and rich civilization and they have a strong and growing economy. For developing countries like India and China tourism presents a wonderful opportunity to earn much needed foreign exchange. Compared to China, the ancient and unique Indian culture is still very much alive. In spite of all these attractions and ethnic charm, tourism industry in India is still underdeveloped in contrast to many other neighboring countries. Tourism in India is still in a stage of infancy. China has emerged much ahead of India in terms of tourist arrivals. China has been successfully tapping its rich tourism potential. China is the 3rd most frequented country of the world after France and U.S.A. This paper has tried to explore the reasons of tourists' preference of China over India by taking into cognizance varied experiences and perceptions of tourists in both the countries and comparing them. A total number of 180 comments of 60 foreign travelers who visited China and India respectively and posted comments on www.virtualtourist.com were studied. It emerged from the study that India and China both the countries thrive on culture and history. People are intrigued by Indian and Chinese philosophies. Although the flying distance between the two countries is no more than eight hours, foreign tourists prefer to visit China over India as India carries a negative image among foreign tourists in terms of hygiene, safety, and infrastructure.


Author(s):  
R. Quentin Grafton ◽  
Long Chu ◽  
Paul Wyrwoll

Water insecurity poses threats to both human welfare and ecological systems. Global water abstractions (extractions) have increased threefold over the period 1960–2010, and an increasing trend in abstractions is expected to continue. Rising water use is placing significant pressure on water resources, leading to depletion of surface and underground water systems, and exposing up to 4 billion people to high levels of seasonal or persistent water insecurity. Climate change is deepening the risks of water scarcity by increasing rainfall variability. By the 2050s, the water–climate change challenge could cause an additional 620 million people to live with chronic water shortage and increase by 75% the proportion of cropland exposed to drought. While there is no single solution to water scarcity or water justice, increasing the benefits of water use through better planning and incentives can help. Pricing is an effective tool to regulate water consumption for irrigation, for residential uses, and especially in response to droughts. For a water allocation to be efficient, the water price paid by users should be equal to the marginal economic cost of water supply. Accounting for all costs of supply is important even though, in practice, water prices are typically set to meet a range of social and political objectives. Dynamic water pricing provides a tool for increasing allocative efficiency in short-term water allocation and the long-term planning of water resources. A dynamic relationship exists between water consumption at a point in time and water scarcity in the future. Thus, dynamic water pricing schemes may take into account the benefit of consuming water at that time and also the water availability that could be used should a drought occur in the future. Dynamic water pricing can be applied with the risk-adjusted user cost (RAUC), which measures the risk impact of current water consumption on the welfare of future water users.


Worldview ◽  
1984 ◽  
Vol 27 (11) ◽  
pp. 4-8
Author(s):  
Charles B. Keely

Ten years ago the United Nations sponsored the first conference of governments on global population. Held in Bucharest, the conference was spearheaded by the United States and planned as a rally in support of the notion that population was growing too rapidly around the world and that the right prescription was family planning. But Bucharest did not turn out as planned. Such developing giants as India and China questioned the cure, and the rallying cry became, rather, that development is the best contraceptive. The conferees produced a grandly-named World Population Plan of Action which, though it acknowledged the role of family planning and contraception, had more than one plan in its platform.


2021 ◽  
Vol 13 (5) ◽  
pp. 2796
Author(s):  
Ukasha Ramli

Physical water scarcity is a growing threat to people’s lives around the world. Non-pecuniary interventions that encourage water conservation amongst households are an effective tool to promote sustainable consumption. In a randomised field experiment on 3461 UK households, a social norms based eco-feedback intervention was found to reduce water consumption by around 5.43 L a day or by 1.8% over 29 months. This effect did not persist for the 10 months after the intervention was stopped suggesting a lack of habit formation. Unlike previous studies, households with low consumption at baseline reduced their consumption the most, while high consumers did not. Heterogeneity was also found across quantile treatment effects, where households in the top and bottom quantiles increased their consumption. These results further contribute to the growing evidence on the effectiveness of combining social norms and eco-feedback as an intervention for conservation.


2021 ◽  
Vol 939 (1) ◽  
pp. 012050
Author(s):  
N M Ilkhamov ◽  
I G Kurbanov ◽  
J Kh Aliev ◽  
S E Ganiev ◽  
Ch V Toshpulatov

Abstract Reducing water consumption in crop irrigation in the world agriculture, studying soil moisture and water consumption by different irrigation methods, improving soil agrophysical properties and increasing productivity, as well as increasing the productivity of vegetable crops by various irrigation methods and improving phytosanitary conditions (weed and pest density, disease). Extensive research is being conducted to assess the level of one of the most pressing issues in agriculture is the development, improvement and widespread introduction of cost-effective irrigation methods in the spring and summer planting and care of vegetable crops in conditions of water scarcity.


2020 ◽  
Vol 8 (5) ◽  
pp. 1855-1861

Water scarcity is one of the important global risks causing a great dispute around the world. How to obtain a suitable water quantity or quality that affects the economy of the world. Egypt is a country suffering from water scarcity due to the high rates of population growth with a fixed share of the Nile water which is considered as the main Egyptian water resource. The present work aims to apply the concept of virtual water on the agricultural products to suggest the replacement of crops having relatively high water consumption and low prices with other crops having low water consumption and high prices. The impacts of the replacement process was achieved through the classification of selected 22 crops and grouped into four groups based on their Specific Water Demand (SWD) and their world prices, then the crops contained in the group of the lowest water consumption and the highest price will be proposed to be exported and the crops in the group of the highest water consumption with the lowest price will be proposed to be imported. The effect of crop replacement within the 22 crops was measured by calculating the Relative Specific Water Demand (RSWD), the Relative Area (RA) saved and consequently the relative cash return. A Matlab program was constructed and calibrated through comparing its results with the CropWat model of FAO database to calculate the SWD of the selected crops cultivated in Egypt. Regarding the results, “Barley” was the best crop proposed to be imported and replaced by Tomato where the RSWD reaches 15.70 m 3 /ton, the relative area saved reaches 10.138 ha/ton and the relative cash return reaches 5691 (1000$/ton). On the other hand, the process of replacement gives a complete vision to the decision makers to decide the priority of the imported crops according to the local market needs taking into consideration the economic situation in the country.


Author(s):  
Denefa Bostandzic ◽  
Matthias Pelster ◽  
Gregor N. F. Weiss

Marine Drugs ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 116
Author(s):  
Daniela Coppola ◽  
Chiara Lauritano ◽  
Fortunato Palma Esposito ◽  
Gennaro Riccio ◽  
Carmen Rizzo ◽  
...  

Following the growth of the global population and the subsequent rapid increase in urbanization and industrialization, the fisheries and aquaculture production has seen a massive increase driven mainly by the development of fishing technologies. Accordingly, a remarkable increase in the amount of fish waste has been produced around the world; it has been estimated that about two-thirds of the total amount of fish is discarded as waste, creating huge economic and environmental concerns. For this reason, the disposal and recycling of these wastes has become a key issue to be resolved. With the growing attention of the circular economy, the exploitation of underused or discarded marine material can represent a sustainable strategy for the realization of a circular bioeconomy, with the production of materials with high added value. In this study, we underline the enormous role that fish waste can have in the socio-economic sector. This review presents the different compounds with high commercial value obtained by fish byproducts, including collagen, enzymes, and bioactive peptides, and lists their possible applications in different fields.


2021 ◽  
pp. 0887302X2110127
Author(s):  
Kim H. Y. Hahn ◽  
Gargi Bhaduri

At the beginning of the COVID-19 pandemic, people from around the world made numerous homemade masks for themselves and their community due to shortage of medical masks as well as to stop the spread of COVID-19. The purpose of the current study was to conduct cross cultural exploration of the reasons for making masks, self-construal and wellbeing associated with masks making by collecting data from residents across US, India, and China. The finding of this study presented different reasons for making masks as well as self-construal, and wellbeing in people who made masks versus those who did not. Differences were also observed among three different cultural groups. This study offers a unique contribution to the public health research engaging in craft making related activities to gain a better perspective of the state of health of a population and the understanding of cross-cultural study of craft making behavior during the pandemic.


1971 ◽  
Vol 3 (4) ◽  
pp. 473-492 ◽  
Author(s):  
Laurie Taylor

Editorial note. March 17th, 1971 was the fiftieth anniversary of the opening by Marie Stopes of her birth control clinic in Holloway, London, the first of its kind in the UK and possibly in the world. In recognition of this notable event, the Board of the Marie Stopes Memorial Foundation, in conjunction with the University of York, has established a Marie Stopes Memorial Lecture to be given annually for a term of years. The first of the series was delivered on 12th March in the Department of Sociology, University of York, by Mr Laurie Taylor of that department. In introducing the speaker, Dr G. C. L. Bertram, the Chairman, emphasized the great contribution made by Marie Stopes to human welfare and gave a brief history of the clinic, which was soon moved to Whitfield Street. On Marie Stopes' death in 1958 the Memorial Foundation was set up to manage the clinic, still in Whitfield Street, and as a working monument to a great women.Mr Taylor's script is printed below as delivered and it will be seen that the lecture was a notable one. Not only that, but it was delivered with the verve of a Shakespearean actor and the members of the large and appreciative audience will not readily forget the occasion.


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