Shi Haiyang, Luo Geping, Sutanudjaja Edwin H, Hellwich Olaf, Chen Xi, Ding Jianli, Wu Shixin, He Xiufeng, Chen Chunbo, Ochege Friday U, Wang Yuangang, Ling Qing, Kurban Alishir, De Maeyer Philippe, Van de Voorde Tim
State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; Department of Geography, Ghent University, Ghent 9000, Belgium; School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China.
State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Research Centre for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011, China; Sino-Belgian Joint Laboratory of Geo-Information, Ghent 9000, Belgium.
Sci Bull (Beijing). 2023 Dec 30;68(24):3240-3251. doi: 10.1016/j.scib.2023.11.012. Epub 2023 Nov 7.
Reducing soil salinization of croplands with optimized irrigation and water management is essential to achieve land degradation neutralization (LDN). The effectiveness and sustainability of various irrigation and water management measures to reduce basin-scale salinization remain uncertain. Here we used remote sensing to estimate the soil salinity of arid croplands from 1984 to 2021. We then use Bayesian network analysis to compare the spatial-temporal response of salinity to water management, including various irrigation and drainage methods, in ten large arid river basins: Nile, Tigris-Euphrates, Indus, Tarim, Amu, Ili, Syr, Junggar, Colorado, and San Joaquin. In basins at more advanced phases of development, managers implemented drip and groundwater irrigation and thus effectively controlled salinity by lowering groundwater levels. For the remaining basins using conventional flood irrigation, economic development and policies are crucial for establishing a virtuous circle of "improving irrigation systems, reducing salinity, and increasing agricultural incomes" which is necessary to achieve LDN.
通过优化灌溉和水资源管理来降低农田土壤盐渍化对于实现土地退化中和（LDN）至关重要。各种灌溉和水资源管理措施在减少流域尺度盐渍化方面的有效性和可持续性仍不确定。在此，我们利用遥感技术估算了1984年至2021年干旱地区农田的土壤盐分。然后，我们使用贝叶斯网络分析来比较十个大型干旱流域（尼罗河、底格里斯 - 幼发拉底河、印度河、塔里木河、阿姆河、伊犁河、锡尔河、准噶尔河、科罗拉多河和圣华金河）盐分对水资源管理（包括各种灌溉和排水方法）的时空响应。在发展阶段更先进的流域，管理者采用了滴灌和地下水灌溉，从而通过降低地下水位有效控制了盐分。对于其余使用传统漫灌的流域，经济发展和政策对于建立“改善灌溉系统、降低盐分和增加农业收入”的良性循环至关重要，而这是实现土地退化中和所必需的。
