scholarly journals A Review of Water Stress and Water Footprint Accounting

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 201
Author(s):  
Dan Wang ◽  
Klaus Hubacek ◽  
Yuli Shan ◽  
Winnie Gerbens-Leenes ◽  
Junguo Liu
Keyword(s):  
Water Pollution ◽  
Water Stress ◽  
Water Footprint ◽  
Green Water ◽  
Research Gaps ◽  
Stress Indicators ◽  
Sustainable Water Management ◽  
Stress Evaluation ◽  
Production And Consumption ◽  
Return Flows

Production and consumption activities deplete freshwater, generate water pollution and may further lead to water stress. The accurate measurement of water stress is a precondition for sustainable water management. This paper reviews the literature on physical water stress induced by blue and green water use and by water pollution. Specifically, we clarify several key concepts (i.e., water stress, scarcity, availability, withdrawal, consumption and the water footprint) for water stress evaluation, and review physical water stress indicators in terms of quantity and quality. Furthermore, we identify research gaps in physical water stress assessment, related to environmental flow requirements, return flows, outsourcing of water pollution and standardization of terminology and approaches. These research gaps can serve as venues for further research dealing with the evaluation and reduction of water stress.

scholarly journals Assessment of Crop Water Footprint for Different Varieties of Groundnut (Arachis hypogaea)

2021 ◽  
Author(s):  
J. Ramachandran ◽  
R. Lalitha ◽  
S. Vallal Kannan ◽  
K. Sivasubramanian
Keyword(s):  
Water Stress ◽  
Tamil Nadu ◽  
Crop Production ◽  
Water Footprint ◽  
Management Strategies ◽  
Green Water ◽  
Blue Water ◽  
Total Water ◽  
Crop Water ◽  
Different Levels

Background: Water Footprint is a recently used indicator which helps to reduce water depletion and alleviate water stress in areas of drought and proper crop cultivation. Hence a study was taken up to assess the crop water footprint of different groundnut varieties namely TMV 7, VRI 2, VRI 3, VRI Gn 5, VRI Gn 6, CO 3, CO Gn 4, ALR 3 and TMV Gn 13 cultivated during Kharif and Rabi seasons at Tiruchirapalli district of Tamil Nadu. Methods: The total water requirement, blue and green crop evapotranspiration, blue and green crop water use and total water footprint for different varieties of groundnut were estimated using CROPWAT 8.0 Windows. A comparison was made between the water footprint of groundnut varieties and the strategies to reduce water footprint is presented. Result: The total water footprint for groundnut varieties ranged from 2603 to 4889 m3 ton-1 (CV of 26%) during kharif season, while it was ranged from 1465 to 2470 m3 ton-1 (CV of 18%) during rabi season. It was found that in all groundnut varieties the blue water footprint is higher than the green water footprint, while VRI Gn 5 variety had minimum total water footprint. It was concluded that, the groundnut production is affected by different levels of blue water stress which requires effective irrigation practices and water management strategies to enhance the crop production.

scholarly journals Water Footprint Assessment in the Agro-industry: A Case Study of Soy Sauce Production

2018 ◽  
Vol 31 ◽  
pp. 08018
Author(s):  
Alfiana Aulia Firda ◽  
Purwanto
Keyword(s):  
Water Resources ◽  
Water Footprint ◽  
Sustainable Use ◽  
Soy Sauce ◽  
Green Water ◽  
Total Water ◽  
Production Chain ◽  
Production And Consumption ◽  
Global Water

In terms of global water scarcity, the water footprint is an indicator of the use of water resources that given knowledge about the environmental impact of consuming a product. The sustainable use of water resources nowadays bring challenges related to the production and consumption phase of water intensive related goods such as in the agro-industry. The objective of the study was to assessment the total water footprint from soy sauce production in Grobogan Regency. The total water footprint is equal to the sum of the supply chain water footprint and the operational water footprint. The assessment is based on the production chain diagram of soy sauce production which presenting the relevant process stages from the source to the final product. The result of this research is the total water footprint of soy sauce production is 1.986,35 L/kg with fraction of green water 78,43%, blue water 21,4% and gray water 0,17%.

Can heat-pulse sap flow measurements be used as continuous water stress indicators of citrus trees?

2012 ◽  
Vol 31 (5) ◽  
pp. 1053-1063 ◽  
Author(s):  
C. Ballester ◽  
J. Castel ◽  
L. Testi ◽  
D. S. Intrigliolo ◽  
J. R. Castel
Keyword(s):  
Water Stress ◽  
Sap Flow ◽  
Heat Pulse ◽  
Flow Measurements ◽  
Stress Indicators ◽  
Sap Flow Measurements ◽  
Citrus Trees

scholarly journals Water footprint of Xiamen city from production and consumption perspectives (2001–2012)

2016 ◽  
Vol 17 (2) ◽  
pp. 472-479 ◽  
Author(s):  
Jiefeng Kang ◽  
Jianyi Lin ◽  
Shenghui Cui ◽  
Xiangyang Li
Keyword(s):  
Water Footprint ◽  
Virtual Water ◽  
Agricultural Products ◽  
Top Down ◽  
Average Production ◽  
Production And Consumption ◽  
Xiamen City ◽  
Per Capita ◽  
The City ◽  
Per Capita Consumption

Providing a comprehensive insight, water footprint (WF) is widely used to analyze and address water-use issues. In this study, a hybrid of bottom-up and top-down methods is applied to calculate, from production and consumption perspectives, the WF for Xiamen city from 2001 to 2012. Results show that the average production WF of Xiamen was 881.75 Mm3/year and remained relatively stable during the study period, while the consumption WF of Xiamen increased from 979.56 Mm3/year to 1,664.97 Mm3/year over the study period. Xiamen thus became a net importer of virtual water since 2001. Livestock was the largest contributor to the total WF from both production and consumption perspectives; it was followed by crops, industry, household use, and commerce. The efficiency of the production WF has increased in Xiamen, and its per capita consumption WF was relatively low. The city faces continuing growth in its consumption WF, so more attention should be paid to improving local irrigation, reducing food waste, and importing water-intensive agricultural products.

scholarly journals Water Footprint Assessment and Water-Energy-Food Nexus for Domestic and Institutional Sectors in Klang Valley, Malaysia: a Review

2018 ◽  
Vol 7 (4.35) ◽  
pp. 244
Author(s):  
Nurul Azmah Safie ◽  
M.A. Malek ◽  
Z. Z. Noor
Keyword(s):  
Water Consumption ◽  
Water Availability ◽  
Water Footprint ◽  
Green Water ◽  
World Population ◽  
Blue Water ◽  
Water Production ◽  
Kuala Lumpur ◽  
Reliable Technique ◽  
Klang Valley

Change in climate, increasing world population and industrialization have placed considerable stress on water availability at certain places. Water Footprint accounting is a reliable technique that can be used for a better water management. This study focuses on establishing a doable methodology on water footprint accounting and assessment for direct water consumption from domestic and institutional sectors located in an urbanized environment such as Klang Valley, Kuala Lumpur. It includes investigation of Water Footprint at domestic household, schools, colleges, terminals and offices in Klang Valley. The value of water consumption, water production and water pollution will be determined using Hoekstra’s approach for green water, blue water and grey water. In addition, findings from this study will be linked to two other elements namely energy and food. This link is named as Water-Energy-Food Nexus. This study will establish the quantity and criteria of Water-Energy-Food Nexus specifically tailored to domestic and institutional sectors in Klang Valley.

scholarly journals Water Footprint Management for Sustainable Growth in the Bangladesh Apparel Sector

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2760
Author(s):  
Laila Hossain ◽  
Mohidus Samad Khan
Keyword(s):  
Water Pollution ◽  
Textile Industry ◽  
Water Reuse ◽  
Water Footprint ◽  
Sustainable Growth ◽  
Raw Material ◽  
Groundwater Depletion ◽  
Cotton Production ◽  
Volume Number ◽  
Textile Industries

Bangladesh is one of the fastest growing economies in the world, primarily driven by its textile industries. A high amount of water is consumed and polluted in the production and processing of raw material to the final product in the textile industry. Therefore, water footprint assessment is important for textile products. In this study, the water footprint of cotton cultivation, transportation and textile industry was calculated by analyzing the amount of imported cotton, production and processing capacity of cotton yarn and cotton fabrics, wastewater volume, number of workers and pollution load database, for 2012–2016. For the textile industry, the annual water footprint was found to be 1.8 billion m3. This high amount of water footprint and water pollution may result in depletion of groundwater level and can lead to major health problems for the local people, respectively. Total water footprint for ready-made garment product is found to be 27.56 billion m3, whereas considering proper water treatment and water reuse facilities can reduce the grey water footprint to around 1.26 billion m3. This study shows the extent of water pollution, groundwater depletion and economic impact of groundwater extraction, and possible means to reduce water footprint in cotton cultivation and textile industries.

scholarly journals Cradle-to-Gate Water-Related Impacts on Production of Traditional Food Products in Malaysia

2020 ◽  
Vol 12 (13) ◽  
pp. 5274 ◽  
Author(s):  
P.X.H. Bong ◽  
M.A. Malek ◽  
N.H. Mardi ◽  
Marlia M. Hanafiah
Keyword(s):  
Water Footprint ◽  
Food Products ◽  
Modern Technology ◽  
Green Water ◽  
Pollution Level ◽  
Traditional Food ◽  
Blue Water ◽  
Total Water ◽  
Freshwater Ecotoxicity ◽  
Cradle To Gate

Modern technology and life-style advancements have increased the demand for clean water. Based on this trend it is expected that our water resources will be under stress leading to a high probability of scarcity. This study aims to evaluate the environmental impacts of selected traditional food manufacturing products namely: tempe, lemang, noodle laksam, fish crackers and salted fish in Malaysia. The cradle-to-gate approach on water footprint assessment (WFA) of these selected traditional food products was carried out using Water Footprint Network (WFN) and Life Cycle Assessment (LCA). Freshwater eutrophication (FEP), marine eutrophication (MEP), freshwater ecotoxicity (FETP), marine ecotoxicity (METP) and water consumption (WCP), LCA were investigated using ReCiPe 2016 methodology. Water footprint accounting of blue water footprint (WFblue), green water footprint (WFgreen) and grey water footprint (WFgrey) were established in this study. It was found that total water footprint for lemang production was highest at 3862.13 m3/ton. The lowest total water footprint was found to be fish cracker production at 135.88 m3/ton. Blue water scarcity (WSblue) and water pollution level (WPL) of these selected food products were also determined to identify the environmental hotspots. Results in this study showed that the WSblue and WPL of these selected food products did not exceed 1%, which is considered sustainable. Based on midpoint approach adopted in this study, the characterization factors for FEP, MEP, FETP, METP and WCP on these selected food products were evaluated. It is recommended that alternative ingredients or product processes be designed in order to produce more sustainable lemang.

scholarly journals An improved method for calculating the regional crop water footprint based on a hydrological process analysis

2018 ◽  
Vol 22 (10) ◽  
pp. 5111-5123 ◽  
Author(s):  
Xiao-Bo Luan ◽  
Ya-Li Yin ◽  
Pu-Te Wu ◽  
Shi-Kun Sun ◽  
Yu-Bao Wang ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Use ◽  
Water Footprint ◽  
Process Analysis ◽  
Regional Scale ◽  
Irrigation District ◽  
Green Water ◽  
Hydrological Process ◽  
Total Water ◽  
Crop Water

Abstract. Fresh water is consumed during agricultural production. With the shortage of water resources, assessing the water use efficiency is crucial to effectively manage agricultural water resources. The water footprint is an improved index for water use evaluation, and it can reflect the quantity and types of water usage during crop growth. This study aims to establish a method for calculating the regional-scale water footprint of crop production based on hydrological processes, and the water footprint is quantified in terms of blue and green water. This method analyses the water-use process during the growth of crops, which includes irrigation, precipitation, groundwater, evapotranspiration, and drainage, and it ensures a more credible evaluation of water use. As illustrated by the case of the Hetao irrigation district (HID), China, the water footprint of wheat, corn and sunflowers were calculated using this method. The results show that canal water loss and evapotranspiration were responsible for most of the water consumption and accounted for 47.9 % and 41.8 % of the total consumption, respectively. The total water footprint of wheat, corn and sunflowers were 1380–2888, 942–1774 and 2095–4855 m3 t−1, respectively, and the blue footprint accounts for more than 86 %. The spatial distribution pattern of the green, blue and total water footprints for the three crops demonstrated that higher values occurred in the eastern part of the HID, which had more precipitation and was further away from the irrigation gate. This study offers a vital reference for improving the method used to calculate the crop water footprint.

scholarly journals Integrated Modeling Approach for Sustainable Land-Water-Food Nexus Management

Agriculture ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 104
Author(s):  
Min Chen ◽  
Songhao Shang ◽  
Wei Li
Keyword(s):  
Fractional Programming ◽  
Resource Constraints ◽  
Water Footprint ◽  
Optimization Problems ◽  
Water Security ◽  
Green Water ◽  
Rapid Urbanization ◽  
Study Region ◽  
Optimal Cropping ◽  
Land Water

Population growth, rapid urbanization, changing diets, and economic development are among the major driving factors of increased demand for water, food and land. In this study, an integrated model was developed for managing land-water-food nexus. A water footprint-based fuzzy fractional programming (WFFP) is developed for optimizing resource allocations toward sustainable food and water security under the agricultural, food, socioeconomic, and natural resource constraints. By calculating the blue and green water footprint of each crop, optimum food requirements were converted into optimal cropping options. The WFFP method can tackle ratio optimization problems associated with fuzzy information, in which fuzzy possibilistic programming is integrated into a linear fractional programming framework. The method is applied to a case study of the Three (Yangtze-Yellow-Lantsang) Rivers Headwaters Region of China. The results can provide the basis for water and agricultural policies formulation and land-water-food nexus management in the study region.

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