Supply Efficiency Evaluation for Wastewater Treatment Facilities in Towns of Western China: A DEA-Malmquist Approach
中国西部の町における下水処理施設の供給効率評価：DEA-Malmquistアプローチ (AI 翻訳)
Rui Dong, Muhammad Awais Baloch, Xukuo Gao
🤖 gxceed AI 要約
日本語
本論文は、2015年から2022年までの中国西部11省の町の下水処理施設を対象に、DEA-Malmquist指数を用いて供給効率を分析した。静的効率は低く（総合効率0.595）、動的全要素生産性は年22.7%成長したが、これは技術進歩によるもので、技術効率は年7.2%低下した。西南部の省が西北部より優れており、環境インフラ最適化への示唆を提供する。
English
This paper evaluates the supply efficiency of wastewater treatment facilities in towns across 11 provinces in Western China from 2015 to 2022 using DEA-Malmquist index. Static efficiency is low (comprehensive efficiency 0.595), and dynamic total factor productivity grows 22.7% annually driven by technological change, while technical efficiency declines. Results show significant regional heterogeneity, providing evidence for environmental infrastructure optimization.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の下水処理効率は世界トップレベルだが、本論文の分析手法は地方自治体のインフラ効率評価に応用可能。特に人口減少地域での施設運営効率化に示唆を与える可能性がある。
In the global GX context
This study provides a quantitative framework for assessing wastewater treatment efficiency in developing regions, relevant for global SDG 6 monitoring. The DEA-Malmquist approach can be applied to other environmental infrastructure, offering insights for transition finance in water management.
👥 読者別の含意
🔬研究者:Useful for scholars in environmental efficiency measurement and DEA methodology applied to water infrastructure.
🏢実務担当者:Limited direct applicability for corporate sustainability teams, but may inform investment decisions in Chinese environmental projects.
🏛政策担当者:Provides evidence for optimizing wastewater infrastructure investment in less-developed regions, relevant for achieving SDG 6.
📄 Abstract（原文）
Wastewater governance is a core component of achieving the United Nations Sustainable Development Goal 6, and the supply imbalance of urban and rural wastewater treatment facilities is a common challenge in the urban-rural transformation of developing economies. As key nodes of urban-rural integration, towns in Western China have prominent shortcomings in the supply efficiency of wastewater treatment facilities, yet existing studies lack systematic quantitative assessments targeting this region. Based on panel data of wastewater treatment facilities in towns across 11 provinces in Western China from 2015 to 2022, this paper adopts the DEA-Malmquist Index to conduct static efficiency measurement, decomposition of dynamic Total Factor Productivity Change (Tfpch), and regional heterogeneity analysis. The findings show that the overall static supply efficiency of wastewater treatment facilities in towns of Western China is below the medium level. During the study period, the arithmetic mean of Comprehensive Efficiency was only 0.595, and the dual deficiency of Pure Technical Efficiency and Scale Efficiency restricted the improvement of performance; Tfpch achieved an average annual growth rate of 22.7%, which was entirely driven by Technological Change. By contrast, Technical Efficiency Change experienced an average annual decline of 7.2%, with the continuous decline of Pure Technical Efficiency Change being the core bottleneck; there is significant inter-provincial heterogeneity in supply efficiency, with the overall performance of southwestern provinces outperforming that of northwestern provinces. This study can provide empirical evidence for the optimization of environmental infrastructure in Western China, as well as a reference for environmental governance in similar regions worldwide.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1142/s2382624x26500116first seen 2026-06-18 04:38:08
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