| This article has been：Browse 1936Times Download 3602Times |
scan it! |
|
|
| DOI：10.13522/j.cnki.ggps.2017.0411 |
|
| Exploring Agricultural Water-saving Regionalization Based on the Water-energy Nexus: A Case Study of Shanghai |
|
WU Meng
|
|
Institute of Ecology and Sustainable Development, Shanghai Academy of Social Sciences, Shanghai 200020, China
|
| Abstract: |
| 【Objective】 Analyze the water-saving and energy-saving potential of different types of agricultural irrigation area. 【Method】 We took Shanghai as an example to explore the theoretical framework of agricultural water-saving regionalization based on the analysis of water-energy nexus. Ward cluster analysis method was introduced to the town-type scale cluster analysis. 【Result】 Based on the results of the case study, Shanghai was divided into 4 agricultural irrigation types, and the targeted management strategies were discussed in this article. The main conclusions were as follow: ①Higher investment in water-saving technology and infrastructure could improve the agricultural water use efficiency and also tended to increase energy consumption and carbon emissions, it restricted the comprehensive agricultural water-saving benefits; ②For the small-scale decentralized agricultural irrigation district, implementing the energy and water pricing mechanism would be conducive to improve agricultural water and energy efficiency; ③Small-scale decentralized agricultural irrigation districts merged into large one could achieve tiny water-saving benefits but may reduced the energy efficiency of agricultural irrigation systems; ④ The utilization of agricultural water-saving irrigation technology and facilities with different level of energy intensity should be followed by local conditions. 【Conclusion】 Exploring agricultural water-saving regionalization based on the water-energy nexus can improve the benefits of agricultural water-saving and energy-saving and provide management strategies for Shanghai and other places in Yangtze River Delta. |
| Key words: agricultural water-saving; water resources; agricultural irrigation; cluster analysis; Shanghai |
|
