State Key Laboratory of Earth Surface Process and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, PR China.
State Key Laboratory of Earth Surface Process and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, PR China.
J Environ Manage. 2024 Nov;370:122532. doi: 10.1016/j.jenvman.2024.122532. Epub 2024 Sep 19.
Matching the supply and demand of related ecosystem services can be an effective way to realize long-term sustainable management of the food-energy-water nexus (FEW Nexus) in drylands. However, few studies have focused on the matching of supply and demand for ecosystem services associated with advancing the sustainability of FEW-Nexus, there is limited research in this domain, which lacks systematic and quantitative analysis of the relationship between them and FEW Nexus sustainability. Here, this research takes the West Liaohe River Basin in the arid region of China as a case study. Based on a localized FEW Nexus sustainability evaluation index system, the FEW Nexus sustainability and the supply-demand matching characteristics of the corresponding ecosystem services in the West Liaohe River Basin from 2005 to 2015 were assessed. The relationship between them was analyzed quantitatively through the methods of coupling coordination degree and geographical detector. The results showed a synergistic improvement in both FEW Nexus sustainability and the supply-demand situation of combined ecosystem services. The supply of food production and water yield were able to meet their demands adequately from 2005 to 2015, with a strengthening surplus, leading to an overall surplus and gradual improvement in the integrated ecosystem services. This surplus synergistically promoted the process of FEW Nexus sustainability. The results of the geographical detector indicate that the supply-demand ratio of carbon sequestration was the main factor influencing FEW Nexus sustainability. Areas with higher FEW Nexus sustainability tended to have larger deficits in carbon sequestration, which was more evident in areas with high levels of urbanization. Therefore, the key to enhancing FEW Nexus sustainability in the basin is to balance the supply of and demand for carbon sequestration services. Overall, the present study not only provides a basis for strengthening the management of the supply-demand of ecosystem services associated with FEW to achieve regional sustainable development, but also offers insights into how the growing demand for the FEW Nexus is exerting pressure on the balance between supply and demand of related ecosystem services.
匹配相关生态系统服务的供给和需求，可以成为实现旱地粮食-能源-水纽带（Food-Energy-Water Nexus，FEW Nexus）长期可持续管理的有效途径。然而，针对与推进 FEW-Nexus 可持续性相关的生态系统服务的供给和需求匹配，相关研究甚少，且这一领域的研究十分有限，缺乏对其与 FEW Nexus 可持续性之间关系的系统和定量分析。在此，本研究以中国干旱地区的西辽河流域为例。基于本地化的 FEW Nexus 可持续性评价指标体系，评估了 2005 年至 2015 年西辽河流域 FEW Nexus 可持续性以及相应生态系统服务的供给-需求匹配特征。通过耦合协调度和地理探测器的方法，对它们之间的关系进行了定量分析。结果表明，FEW Nexus 可持续性和综合生态系统服务的供给-需求情况都呈协同改善趋势。2005 年至 2015 年，粮食生产和产水量的供给能够充分满足需求，并且出现了增强的盈余，导致综合生态系统服务的整体盈余和逐步改善。这种盈余协同促进了 FEW Nexus 可持续性的发展。地理探测器的结果表明，碳固存的供需比是影响 FEW Nexus 可持续性的主要因素。FEW Nexus 可持续性较高的地区，碳固存的供需缺口往往较大，在城市化水平较高的地区更为明显。因此，增强流域 FEW Nexus 可持续性的关键在于平衡碳固存服务的供给和需求。总体而言，本研究不仅为加强与 FEW 相关的生态系统服务供给-需求管理以实现区域可持续发展提供了依据，还深入探讨了 FEW Nexus 日益增长的需求如何对相关生态系统服务的供给-需求平衡施加压力。
