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Agricultural Water Use Efficiency: Is There Any Spatial Correlation between Different Regions?

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  • Yanling Zhi

    (State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
    Institute of Management Science, Business School, Hohai University, Nanjing 210098, China)

  • Fan Zhang

    (Institute of Management Science, Business School, Hohai University, Nanjing 210098, China)

  • Huimin Wang

    (State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
    Institute of Management Science, Business School, Hohai University, Nanjing 210098, China)

  • Teng Qin

    (School of Business, Changzhou University, Changzhou 213159, China)

  • Jinping Tong

    (School of Business, Changzhou University, Changzhou 213159, China)

  • Ting Wang

    (Institute of Management Science, Business School, Hohai University, Nanjing 210098, China)

  • Zhiqiang Wang

    (Institute of Management Science, Business School, Hohai University, Nanjing 210098, China)

  • Jinle Kang

    (Institute of Management Science, Business School, Hohai University, Nanjing 210098, China)

  • Zhou Fang

    (State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
    Institute of Management Science, Business School, Hohai University, Nanjing 210098, China)

Abstract

Affected by global climate change and water shortages, food security continues to be challenged. Improving agricultural water use efficiency is essential to guarantee food security. China has been suffering from water scarcity for a long time, and insufficient water supply in the agricultural sector has seriously threatened regional food security and sustainable development. This study adopted the super-efficiency slack-based model (SBM) to measure the provincial agricultural water use efficiency (AWUE). Then, we applied the vector autoregression (VAR) Granger causality test and social network analysis (SNA) method to explore the spatial correlation of AWUE between different provinces and reveal the interprovincial transmission mechanism of spillover effects in AWUE. The results show the following: (1) In China, the provincial AWUE was significantly enhanced, and the gaps in provincial AWUE have widened in the past 20 years. (2) There were apparent spatial heterogeneity and correlations of provincial AWUE. The provinces with higher AWUE were mainly located in economically developed and coastal areas. (3) The correlation of AWUE between provinces showed significant network structure characteristics. Fujian, Hebei, Jiangsu, Shandong, and Hubei Qinghai were central to the network, with high centrality. (4) The AWUE spatial correlation network could be divided into four blocks. Each block played a different role in the cross-provincial transmission of spillover effects. Therefore, it is necessary to manage the agricultural water resources and improve water use efficiency from the perspective of the network.

Suggested Citation

  • Yanling Zhi & Fan Zhang & Huimin Wang & Teng Qin & Jinping Tong & Ting Wang & Zhiqiang Wang & Jinle Kang & Zhou Fang, 2022. "Agricultural Water Use Efficiency: Is There Any Spatial Correlation between Different Regions?," Land, MDPI, vol. 11(1), pages 1-22, January.
    • Handle: RePEc:gam:jlands:v:11:y:2022:i:1:p:77-:d:718101
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    References listed on IDEAS

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    2. Pereira, Luis Santos & Oweis, Theib & Zairi, Abdelaziz, 2002. "Irrigation management under water scarcity," Agricultural Water Management, Elsevier, vol. 57(3), pages 175-206, December.
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    1. Ejovi Akpojevwe Abafe & Yonas T. Bahta & Henry Jordaan, 2022. "Exploring Biblioshiny for Historical Assessment of Global Research on Sustainable Use of Water in Agriculture," Sustainability, MDPI, vol. 14(17), pages 1-34, August.
    2. Wang, Yayu & Muhammad, Tahir & Liu, Zeyuan & Liang, Hongbang & Wang, Xingpeng & Wang, Zhenhua & Ma, Changjian & Li, Yunkai, 2022. "Chelated copper reduces yet manganese fertilizer increases calcium-silica fouling in brackish water drip irrigation systems," Agricultural Water Management, Elsevier, vol. 269(C).
    3. Hongguang Dong & Jie Geng & Yue Xu, 2023. "Receiving Robust Analysis of Spatial and Temporary Variation of Agricultural Water Use Efficiency While Considering Environmental Factors: On the Evaluation of Data Envelopment Analysis Technique," Sustainability, MDPI, vol. 15(5), pages 1-18, February.

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