Fu Shuai, Xu Bingxian, Peng Yuxin, Yu Jie, Feng Yingxiang, Li Xiuxiang, Li Lanhai
Land Resource Management, School of Finance and Public Administration, Jiangxi University of Finance and Economics, Nanchang, 330013, PR China.
Xinjiang Key Laboratory of Water Cycle and Water Utilization in Arid Zone, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urmqi, 830011, PR China.
Heliyon. 2024 Aug 16;10(16):e36292. doi: 10.1016/j.heliyon.2024.e36292. eCollection 2024 Aug 30.
The utilization of regional water resources has the potential to impact carbon emissions. Maintaining a decoupled relationship between water resources and carbon emissions facilitates harmonious regional development. Understanding the mechanism of their coordination is conducive to achieving the "Double Carbon" goal and control of regional carbon emissions and water resource consumption. This study examines the decoupling relationship between water resource utilization and carbon emissions in Poyang Lake area, China, employing the Tapio decoupling model and the LMDI(logarithmic mean divisia index) decomposition model. The results indicate that carbon emissions in Poyang Lake area exhibited a gradual increase, accompanied by an annual growth rate of 5.99 %. The water supply exhibited a slow expansion. They have exhibited state of affairs strong negative decoupling and expansive negative decoupling over the past 15 years. Moreover, this situation is most acute and worsening in the secondary industry. The water use structure effect and water economic benefit effect are the primary factors affecting carbon emission increases, contributing 57.93 % and 65.66 %, respectively. Carbon emissions intensity is the largest inhibiting factor, which accounts for a maximum contribution of 42.96 %. The order of potency of the driving factors is as follows: water economic benefit > carbon emission intensity > water use structure > water use efficiency. In summary, this research recognised the enhancement of the water economic efficiency index not only facilitates the decoupling phenomenon but also improves the water-carbon relationship, especially in the secondary industry. It serves as a compelling illustration of the significance of elucidating the interrelationship between regional water and carbon dynamics, and charting the course for the formulation of regional policies that would facilitate the advancement of environmentally conscious and carbon-neutral development, as well as water conservation.
区域水资源利用具有影响碳排放的潜力。保持水资源与碳排放之间的脱钩关系有助于区域协调发展。了解它们的协调机制有利于实现“双碳”目标以及控制区域碳排放和水资源消耗。本研究运用Tapio脱钩模型和LMDI（对数平均迪氏指数）分解模型，考察了中国鄱阳湖地区水资源利用与碳排放之间的脱钩关系。结果表明，鄱阳湖地区碳排放呈逐年上升趋势，年增长率为5.99%。供水量呈缓慢增长态势。在过去15年中，二者呈现出强负脱钩和扩张负脱钩状态。此外，这种情况在第二产业中最为严重且有恶化趋势。用水结构效应和水经济效益效应是影响碳排放增加的主要因素，贡献率分别为57.93%和65.66%。碳排放强度是最大的抑制因素，最大贡献率为42.96%。驱动因素的影响程度排序为：水经济效益＞碳排放强度＞用水结构＞用水效率。综上所述，本研究认识到提高水经济效率指数不仅有助于脱钩现象的出现，还能改善水-碳关系，特别是在第二产业中。这有力地说明了阐明区域水与碳动态之间的相互关系以及规划区域政策方向的重要性，这些政策将促进环境友好型和碳中和发展以及水资源保护。
