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An Analysis of a Water Use Decoupling Index and Its Spatial Migration Characteristics Based on Extracting Trend Components: A Case Study of the Poyang Lake Basin

State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
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Water 2019, 11(5), 1027; https://doi.org/10.3390/w11051027
Received: 13 February 2019 / Revised: 17 April 2019 / Accepted: 14 May 2019 / Published: 16 May 2019
(This article belongs to the Special Issue Economics of Water Resources Management)
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Abstract

Water resources and their utilization perform a critical role in sustainable development. A full comprehension of the decoupling relationship between water consumption and economic development is a prerequisite for sustainable water resource management. This thesis developed a decoupling index analysis model based on Hodrick–Prescott filtering; analyzed the spatial aggregation characteristics of Gross Domestic Product (GDP), water consumption, and the decoupling index by the Global and Local Moran’s Index; and calculated the spatial gravity migration characteristics of GDP, water consumption, and the decoupling index. A case study in the Poyang Lake basin was selected to analyze the relationship between water and the economy. The results indicated that decoupling status was steadier after extracting trend components. The decoupling index exhibited spatial outlier characteristics. The spatial gravity center migration directions of GDP and water consumption were opposite. Furthermore, the Poyang Lake basin was in a weak decoupling status, and its water use pattern was sustainable to a certain extent. View Full-Text
Keywords: Hodrick–Prescott filtering; decoupling analysis; spatial aggregation characteristics; spatial gravity center migration Hodrick–Prescott filtering; decoupling analysis; spatial aggregation characteristics; spatial gravity center migration
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Cai, H.; Mei, Y.; Chen, Y. An Analysis of a Water Use Decoupling Index and Its Spatial Migration Characteristics Based on Extracting Trend Components: A Case Study of the Poyang Lake Basin. Water 2019, 11, 1027.

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