Research on Water Resource Efficiency in Provinces of China

2017 ◽  
Vol 865 ◽  
pp. 645-649
Author(s):  
Wei Li ◽  
Xi Feng Wang ◽  
Jia Hong Liu
Keyword(s):  
Water Resources ◽  
Water Resource ◽  
Traditional Method ◽  
Relative Proportion ◽  
Influence Factors ◽  
Absolute Number ◽  
Resource Efficiency ◽  
Agricultural Water ◽  
Input Method ◽  
Agricultural Water Use

Based on the concept of agricultural total factor efficiency and the concept of total factor energy efficiency, this paper uses the DEA model based on input method to measure the total factor water resource efficiency. In the process of calculation, some factors of production, such as GDP, labor force and so on, are considered in order to make up the traditional method for the deficiency of considering single factor of water resources. This paper calculates the total factor water resources efficiency in 31 provinces of China in the year of 2009 and 2012, and analyses the spatial distribution and the change of water resources efficiency. The results indicate that the absolute number and relative proportion of agricultural water use are important influence factors of water resources efficiency.

scholarly journals Changing mechanisms of agricultural water use in the urbanization and industrialization of China

Water Policy ◽  
2017 ◽  
Vol 19 (5) ◽  
pp. 908-935 ◽  
Author(s):  
Weiwei Shao ◽  
Zuhao Zhou ◽  
Jiahong Liu ◽  
Guiyu Yang ◽  
Jianhua Wang ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Use ◽  
Water Resource ◽  
Agricultural Water ◽  
Rapid Urbanization ◽  
Agricultural Modernization ◽  
Agricultural Water Use ◽  
Agricultural Water Resources ◽  
The Impact ◽  
The Relationship

The rapid urbanization and industrialization of China in recent years has presented serious challenges for the country in guaranteeing the preservation of agricultural water resources. This study selected four areas in China, each with different water resource and social development conditions. The relationship between the processes of urbanization and industrialization and recent agricultural water use was analyzed using rates of urbanization and the proportion of the added values from secondary and tertiary industries to China's gross domestic product. The analysis showed that overall agricultural water use in China decreases as the processes of urbanization and industrialization proceed. Agricultural water use has decreased in the Huang-Huai-Hai and northwest regions because both have experienced water resource shortages. The impact of industrialization and urbanization is minor in the northeast and southern regions as these areas have abundant water resources; however, the proportion of agricultural water use to total water use has decreased. These results reflect the impact that urbanization and industrialization have on agricultural water use, particularly in terms of how these processes change population structure, industry structure, and comparative benefit. This study advocates for a synergistic development of industrialization, urbanization, and agricultural modernization, and the guarantee of grain safety in China.

scholarly journals Spatial–Temporal Evolution Characteristics and Influencing Factors of Agricultural Water Use Efficiency in Northwest China—Based on a Super-DEA Model and a Spatial Panel Econometric Model

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 632
Author(s):  
Weinan Lu ◽  
Wenxin Liu ◽  
Mengyang Hou ◽  
Yuanjie Deng ◽  
Yue Deng ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Water Resource ◽  
Arid Regions ◽  
Econometric Model ◽  
Northwest China ◽  
Agricultural Water ◽  
Agricultural Water Use ◽  
Use Efficiency ◽  
Semi Arid

Improving agricultural water use efficiency (AWUE) is an important way to solve the shortage of water resources in arid and semi-arid regions. This study used the Super-DEA (data envelopment analysis) to measure the AWUE of 52 cities in Northwest China from 2000 to 2018. Based on spatial and temporal perspectives, it applied Exploratory Spatial Data Analysis (ESDA) to explore the dynamic evolution and regional differences of AWUE. A spatial econometric model was then used to analyze the main factors that influence the AWUE in Northwest China. The results showed firstly that the overall AWUE in Northwest China from 2000 to 2018 presented a steady upward trend. However, only a few cities achieved effective agricultural water usage by 2018, and the differences among cities were obvious. Secondly, AWUE showed an obvious spatial autocorrelation in Northwest China and showed significant high–high and low–low agglomeration characteristics. Thirdly, economic growth, urbanization development, and effective irrigation have significant, positive effects on AWUE, while per capita water resource has a significant, negative influence. Finally, when improving the AWUE in arid and semi-arid regions, plans should be formulated according to local conditions. The results of this study can provide new ideas on the study of AWUE in arid and semi-arid regions and provide references for the formulation of regional agricultural water resource utilization policies as well.

Correlation between Grain Production and the Water Supply in Yunnan

2014 ◽  
Vol 501-504 ◽  
pp. 1977-1980
Author(s):  
Jian Xiong Wang ◽  
Pan Li
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Conservation ◽  
Food Production ◽  
Supply And Demand ◽  
Grain Production ◽  
Agricultural Water ◽  
Regional Food ◽  
Agricultural Water Use ◽  
Stable Yield

In recent years in yunnan province grain production increase in volatility,The high and stable yield of grain without good irrigation. Agriculture is water conservation, Industrial and agricultural water use ratio is about 1:4 in China, the main contradiction of supply and demand of water resources in agriculture.Due to other reasons, agricultural water supply reliability will be further reduced.In the case of agricultural water situation has deteriorated, in order to ensure and enlarge the scale of regional food production,urgently needs to research and develop to solve the contradictory between food production and supply of water resources in this area.

scholarly journals Study on Evaluation of Agricultural Irrigation Zoning and Optimal Utilization of Water Resources in Yantai City

2020 ◽  
Vol 194 ◽  
pp. 05017
Author(s):  
Hong Hou ◽  
Youqian Qiao ◽  
Xiangran Li
Keyword(s):  
Water Resources ◽  
Water Use ◽  
Water Consumption ◽  
Sustainable Use ◽  
Agricultural Irrigation ◽  
Agricultural Water ◽  
Agricultural Water Use ◽  
Yantai City ◽  
Economic Developments ◽  
Efficient Water Use

Agricultural water is the largest water user in Yantai City, and its water consumption accounts for more than 2/3 of the total water consumption in Yantai City. The potential for agricultural water saving is huge, but the overall level of agricultural water efficiency in Yantai City is not very high, and the waste of water resources is serious. Efficient agricultural water use in Yantai is a key issue for achieving efficient and sustainable use of water resources in Yantai. Different regions in the study area have different social and economic developments, different industrial structures, and different natural climates, and their investments in agricultural water conservancy facilities are also different. In order to better study the agricultural efficient water use model in Yantai City. This article will divide the agricultural irrigation sub-area according to the actual situation of Yantai.

Agricultural Restructuring Based on the Water Resources Carrying Capacity in Shandong Province, China

2014 ◽  
Vol 675-677 ◽  
pp. 783-786
Author(s):  
Qiang Huang ◽  
Wei Ping Wang ◽  
Hai Yan Deng
Keyword(s):  
Water Resources ◽  
Water Resource ◽  
Agricultural Production ◽  
Yellow River ◽  
Water Environment ◽  
Shandong Province ◽  
Utilization Efficiency ◽  
Agricultural Water ◽  
Polluted River ◽  
Agricultural Restructuring

The agricultural production in Shandong province is top the list in our country. Available irrigation water has become shorter because quantity of agriculture water use is larger in a part of Shandong, water environment being worse. The contradictory relations between agricultural water and available water resource as well as water environment are analyzed in typical areas, such as groundwater overdraft area, seawater intrusion area and agricultural production areas along the polluted river. The results showed that water resource cannot support the existing mode of agricultural production in these areas. It is suggested to promote agricultural restructuring based on the quantity and quality of the local water resource. Vegetable production bases are moved from Shouguang (in Weifang city of Shandong province, China) to the areas along the Yellow River. The export of vegetables will be reduced. To improve the guarantee degree of water supply, the crop production along the polluted river will be replaced by fast-growing plantation or the surface water irrigation will be changed into exploitation of groundwater. It is suggested to generalize water-saving irrigation system, reduce the amount of agricultural water and improve the utilization efficiency of water resources.

scholarly journals Water Use Efficiency and Sensitivity Assessment for Agricultural Production System from the Water Footprint Perspective

2020 ◽  
Vol 12 (22) ◽  
pp. 9665
Author(s):  
Weiwei Wang ◽  
Jigan Wang ◽  
Xinchun Cao
Keyword(s):  
Water Resources ◽  
Water Use Efficiency ◽  
Water Use ◽  
Water Footprint ◽  
Agricultural System ◽  
Agricultural Water ◽  
Wheat Production ◽  
Agricultural Water Use ◽  
Efficiency Performance ◽  
Use Efficiency

The increasing shortage of water resources and the growing demand for crops make water use efficiency a decisive factor for the sustainable and healthy development of the agricultural system. In order to evaluate agricultural water use efficiency from the water footprint perspective, the current study constructed the comprehensive water efficiency (CWE) index based on eight single agricultural water use efficiency performance parameters. The water resources utilization and efficiency in the wheat production system of China from 2006 to 2015 were analyzed and the sensitivity of single indices for CWE was identified. The results show that the national crop water footprint (CWF) for wheat production was estimated to be, including 46.3% blue, 36.6% green and 17.0% blue components, respectively. The spatial distribution patterns of water use efficiency performance indices were different. CWE of the country was 0.387, showing an upward trend over time and decreased from the southeast to the northwest geographically. Crop water productivity (CWP), productive water ratio (PWR) and rainwater consumption ratio (RCR) turned out to be the first three sensitive parameters for CWE in China. The improvement of China’s overall CWE relied on reducing inefficient blue-green water use and increasing the output capacity for per unit water. Advanced agricultural water-saving technologies were in high need for goal achievement, especially for the Huang-Huai-Hai plain, which held more than 70% of Chinese wheat production and CWF. The results provide support for efficient utilization and sustainable development of water resources in the agricultural system.

Economics of Water

2016 ◽  
Author(s):  
Jeffrey M. Peterson ◽  
Nathan Hendricks
Keyword(s):  
Water Quality ◽  
Water Resources ◽  
Economic Value ◽  
Policy Formation ◽  
Market Failures ◽  
Agricultural Water ◽  
Goods And Services ◽  
Agricultural Water Use ◽  
Governing Institutions ◽  
Degraded Water Quality

Water resources provide services of economic value to different sectors through consumptive uses, non-consumptive uses, nonuse, and as a waste receptor. The diverse array of goods and services provided by water create a challenge for efficiently allocating the resource. Furthermore, water resources are often subject to market failures because they lack the conditions of excludability and rivalry. These market failures result in depleted water supplies and degraded water quality. This chapter discusses various policy approaches that have attempted to address these market failures, many of which have created additional economic inefficiencies. It also discusses some of the scale and jurisdiction issues in water management—such as local self-governing institutions and transboundary policy formation—from an economics perspective. It primarily analyzes policies affecting agricultural water use and the impacts of agriculture on water quality because agriculture is the largest user of water and is a major contributor to water quality problems.

scholarly journals Simulation-Optimization Model for Conjunctive Management of Surface Water and Groundwater for Agricultural Use

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3444
Author(s):  
Agbortoko Bate Ashu ◽  
Sang-Il Lee
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Water Deficit ◽  
Water Resource ◽  
Water Demand ◽  
Simulation Optimization ◽  
Groundwater Resources ◽  
Ann Model ◽  
Agricultural Water ◽  
Conjunctive Management

The conjunctive management of surface water and groundwater resources is essential to sustainably manage water resources. The target study is the Osan watershed, in which approximately 60–70% of rainfall occurs during the summer monsoon in Central South Korea. Surface water resources are overexploited six times as much as groundwater resources in this region, leading to increasing pressure to satisfy the region’s growing agricultural water demand. Therefore, a simulation-optimization (S-O) model at the sub-basin scale is required to optimize water resource allocation in the Osan watershed. An S-O model based on an artificial neural network (ANN) model coupled with Jaya algorithm optimization (JA) was used to determine the yearly conjunctive supply of agricultural water. The objective was to minimize the water deficit in the watershed subject to constraints on the cumulative drawdown in each subarea. The ANN model could predict the behaviour of the groundwater level and facilitate decision making. The S-O model could minimize the water deficit by approximately 80% in response to the gross water demand, thereby proving to be suitable for a conjunctive management model for water resource management and planning.

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