scholarly journals A regulation-allocation coupling approach for agricultural water resources management based on water quantity orientation

2020 ◽  
Author(s):  
Siyuan Liu ◽  
Ni Wang ◽  
Jiancang Xie ◽  
Rengui Jiang ◽  
Menglong Zhao
Keyword(s):  
Water Resources ◽  
Coupling Model ◽  
Northwest China ◽  
Rapid Expansion ◽  
Local Conditions ◽  
The Sustainable Development ◽  
Balanced Development ◽  
Coupling Approach ◽  
Agricultural Water Resources ◽  
Water Scarce

Abstract In water-scarce areas with low grain yields, people have to expand the farmland scale to gain more food. Rapid expansion of agricultural scale may lead to a higher risk of re-abandonment of wasteland due to waterless irrigation in water-deficient areas. Against this background, this study proposed a water resources regulation-allocation coupling model. The ‘regulation’ is to control the water consumption of agriculture and regulate the utilized scale with water resources as the main constraint; the ‘allocation’ is to optimize the water resources allocation among crops and arrange the crop planting system according to the water quota for different crops and the economic, social and ecological benefits brought by crops, so as to control the water resources among crops. Afterwards, taking an agro-pastoral ecotone in Northwest China as the study case, schemes of feasible agricultural scale and planting structure suitable for local conditions were obtained. Lastly, the matching patterns of land and water resources were raised gradually from ‘poor’ into ‘good’ degree from 2015 to 2030. This study is expected to provide a reference for controlling the ordered and balanced development of land and water resources of agriculture as well as effectively improving the sustainable development ability in water-deficient areas.

scholarly journals Comprehensive Assessment of Water Footprints and Water Scarcity Pressure for Main Crops in Shandong Province, China

2019 ◽  
Vol 11 (7) ◽  
pp. 1856 ◽  
Author(s):  
Mengran Fu ◽  
Bin Guo ◽  
Weijiao Wang ◽  
Juan Wang ◽  
Lihua Zhao ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Water Resources ◽  
Water Scarcity ◽  
Water Footprint ◽  
Shandong Province ◽  
Total Water ◽  
Gis Technology ◽  
The Sustainable Development ◽  
Meteorological Observations ◽  
Water Scarce

Rapid economic development has posed pressure on water resources, and the potential for a water crisis has become an important obstacle to the sustainable development of society. Water footprint theory and its applications in agriculture provide an important strategic basis for the rational utilization and sustainable development of water resources. Based on the monthly meteorological observations and agricultural data of Shandong Province, CROPWAT 8.0 and Geographic Information System (GIS) technology, the green, blue and grey water footprints of wheat, maize, cotton and groundnut from 1989 to 2016 were calculated and the spatial variations of water footprints for crops in different rainfall years were analyzed. Additionally, assessment of water stress for agricultural productions was conducted in this study. The results showed that the average water footprints of wheat, maize, cotton and groundnut were 2.02 m3/kg, 1.24 m3/kg, 7.29 m3/kg and 1.75 m3/kg, respectively in Shandong Province. A large amount of the average total water footprint was calculated for wheat (420.59 × 108 m3/yr), maize (222.16 × 108 m3/yr), cotton (72.70 × 108 m3/yr) and groundnut (50.07 × 108 m3/yr). The average total water footprint of the four crops was 765.52 × 108 m3/yr (29.98% blue) and exhibited a gradual decreasing trend over time. Specifically, the total water footprint of wheat was the highest among four main crops in Shandong Province and exhibited a decreasing trend during 1989–2016. The maize was ranked in the second place, and was the only crop still increasing rapidly. The spatial and temporal changes of water footprints for crops were obvious in different rainfall years. Additionally, agricultural productions in most regions were facing the threat of water scarcity. Therefore, the scientific planning of crop planting structures and rational control of sown areas of crops with large water footprints should be implemented in severely water-scarce regions. This study can give some suggestions on the adjustment of planting structure for the sustainable development of agriculture and the realization of efficient utilization of water resources.

A Water Resources Collaborative Allocation Model for the Composite Water Resources-Socioeconomic-Eco-Environment System

2021 ◽  
Author(s):  
Liqin Li ◽  
Ting Wang ◽  
Xinmin Xie ◽  
Xingyao Pan
Keyword(s):  
Water Resources ◽  
Composite System ◽  
Mutual Exclusion ◽  
Northwest China ◽  
Tarim River ◽  
Allocation Model ◽  
Irrigation Area ◽  
Balanced Development ◽  
Proposed Model ◽  
Relationship Of

Abstract In consideration of the strong mutual exclusion of urban development and ecological environment protection, the coupling relationship of the composite water resources-socioeconomic-eco-environment system is overall recognized on the base, and the key control parameters and order parameters in the collaborative allocation model for the composite system are quantitative characterized. Then, aiming at the coordinated and orderly development of the composite system, the water resources collaborative allocation model is proposed by means of multiple loop iteration technique. At last, the proposed model is successfully applied in the Tarim River in northwest China. The results reveals that when the water frequency is less than or equal to 50%, through an accumulated new water saving irrigation area of 12.76 million mu, an accumulated reduced agricultural irrigation area of 6.22 million mu, as well as an accumulated reduced water usage quantity at 7.5 billion m3 in national economy, which can realize the orderly benign evolution and efficient and balanced development of the water resources, economic society and ecosystem composite system,and verify the feasibility of the method.

COMPORTAMENTO REPRODUTIVO DAS MULHERES RIBEIRINHAS DO AMANÃ

2008 ◽  
Vol 1 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Edila Arnaud Ferreira Moura
Keyword(s):  
Sustainable Development ◽  
Reproductive Health ◽  
Reproductive Behavior ◽  
Reproductive Period ◽  
Health Programs ◽  
Local Conditions ◽  
The Sustainable Development ◽  
Rivers And Lakes ◽  
Pregnancy And Delivery ◽  
The Mean

This work presents the results of a study about the reproductive behavior of riverine women living in the Sustainable Development Reserve Amanã, in the Middle Solimões region, state of Amazonas. The study was done in 2001 with the objective of identify aspects of the reproductive behavior of 83 women, collected through reproductive history methodology. These women live in small localities along the rivers and lakes in the middle of the Amazonian forest. The study identified that these women initialize their reproductive period at the age of 17, in average, and the mean age of their last pregnancy occurs at the age of 42, considering those above 50 years old. 36% of these 83 women had lost one or more of their children before the age of five. Only 16% use contraceptives and 12% are sterilized. They don’t have access to the basic health assistance in a regular basis and the local midwives are extremely important in their assistance during pregnancy and delivery. This study em phasizes the importance of reproductive health programs including those social and cultural local conditions.

Exploring Northwest China's agricultural water-saving strategy: analysis of water use efficiency based on an SE-DEA model conducted in Xi'an, Shaanxi Province

2016 ◽  
Vol 74 (5) ◽  
pp. 1106-1115 ◽  
Author(s):  
L. Mu ◽  
L. Fang ◽  
H. Wang ◽  
L. Chen ◽  
Y. Yang ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Use Efficiency ◽  
Water Use ◽  
Water Demand ◽  
Water Governance ◽  
Northwest China ◽  
Water Saving ◽  
Shaanxi Province ◽  
Agricultural Water ◽  
Use Efficiency

Worldwide, water scarcity threatens delivery of water to urban centers. Increasing water use efficiency (WUE) is often recommended to reduce water demand, especially in water-scarce areas. In this paper, agricultural water use efficiency (AWUE) is examined using the super-efficient data envelopment analysis (DEA) approach in Xi'an in Northwest China at a temporal and spatial level. The grey systems analysis technique was then adopted to identify the factors that influenced the efficiency differentials under the shortage of water resources. From the perspective of temporal scales, the AWUE increased year by year during 2004–2012, and the highest (2.05) was obtained in 2009. Additionally, the AWUE was the best in the urban area at the spatial scale. Moreover, the key influencing factors of the AWUE are the financial situations and agricultural water-saving technology. Finally, we identified several knowledge gaps and proposed water-saving strategies for increasing AWUE and reducing its water demand by: (1) improving irrigation practices (timing and amounts) based on compatible water-saving techniques; (2) maximizing regional WUE by managing water resources and allocation at regional scales as well as enhancing coordination among Chinese water governance institutes.

Green efficiency of water resources in Northwest China: Spatial-temporal heterogeneity and convergence trends

2021 ◽  
pp. 128651
Author(s):  
Wei-ping Wu ◽  
Yi-fei Zhu ◽  
Wei-kang Zeng ◽  
Min Wang ◽  
Dong-xiao Yang ◽  
...  
Keyword(s):  
Water Resources ◽  
Northwest China ◽  
Temporal Heterogeneity

scholarly journals Water Resources Development in Nepal: Myths and Realities

2018 ◽  
Vol 23 ◽  
pp. 22-29
Author(s):  
Surya Nath Upadhyay ◽  
Prakash Gaudel
Keyword(s):  
Economic Growth ◽  
Sustainable Development ◽  
Water Resources ◽  
Water Resources Management ◽  
Water Resources Development ◽  
The Sustainable Development ◽  
Resources Management ◽  
Energy And Environment ◽  
Societal Welfare ◽  
Resources Development

Despite the ‘immense’ water resources available, Nepal has not been able to transform this abundance of water resources into desired economic growth and societal welfare. This paper attempts to analyze the reasons for such incessant challenges that loom over water resources development in Nepal. This paper finds that it is not the resource that limits the development of water resources, but the approaches and wishes that are framed on the foundation of persistent myths. Analyzing those myths, this paper highlights the realities in water resources management of Nepal, and suggests that without dismantling the existing myths, the sustainable development of water resources seems limited.HYDRO Nepal JournalJournal of Water, Energy and Environment Issue: 23Year: 2018

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