Oasis sustainability is related to water supply mode

作者：Baili Chen, Quntao Duan, Wenzhi Zhao, Lixin Wang, Yanxia Zhong, Yanli Zhuang, Xueli Chang, Chunyuan Dong, Wentao Du, Lihui Luo · 发表于：Agricultural Water Management · 年份：2023 · DOI：10.1016/j.agwat.2023.108589 · 被引用次数：17 · 研究领域：Water-Energy-Food Nexus Studies、Energy and Environment Impacts、Water resources management and optimization

Oasis development relies on water supply and the supply mode can be divided into artesian piloting water (APW) mode and high-lift pumping water (HPW) mode. APW mode relies on gravity to retain and intercept water. HPW mode uses cascade pumping irrigation projects to transport water by up to 470 m, mainly serving extremely arid areas. A comprehensive analysis of the water-energy-food-ecology (WEFE) nexus to optimize water use management is conducive to the sustainable development of an oasis. Due to differences in water supply difficulty and cost, there are significant differences in socioeconomic development, water management, and drought adaptation between the APW and HPW oases. Taking the APW and HPW regions of Ningxia in the Yellow River Basin as the study areas, this study constructed a Bayesian network (BN) to quantify the causality and uncertainty in the WEFE nexus to analyze the development status and the evolving characteristics of the human-water relationships of the two regions. Scenario simulation based on BN quantified the impact and difference of management measures on the WEFE nexus in the two regions. During 2000–2020, as the APW region developed, agricultural water use decreased by 36%, showing great water-saving potential, while the development of the HPW region experienced water shortages. Excessive and inefficient agricultural water use is the main factor affecting the sustainability in both regions. Improving irrigation coefficient is the most effective wa...