College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
Environ Sci Technol. 2022 Jul 19;56(14):10465-10473. doi: 10.1021/acs.est.2c01855. Epub 2022 Jun 28.
The effective control of cropland soil erosion is urgent for all countries because of its threat to global food security. Cropland soil erosion is caused by agricultural production and driven indirectly by consumption. Analyzing the causes and preventive strategies from the consumption side is essential for soil erosion control. However, there is not yet sufficient research or practice. In this study, we estimated global cropland soil erosion with the revised universal soil loss equation, allocated it to specific types of crops, and quantified the cropland soil erosion footprint of the economies with a multiregional input-output analysis model. Our results showed that developed economies, usually importing cropland soil erosion from developing or agriculturally developed economies, are the beneficiaries in the current crop trading system. The European Union is the largest net importer, while Brazil is the largest exporter. The indirect and induced sectors are the main contributors, consuming approximately 70.48% of the total cropland soil erosion. Our results revealed the region- and product-specific contributors that could inform the reduction of global cropland soil erosion for sustainable food production and consumption.
有效控制农田土壤侵蚀对所有国家来说都迫在眉睫，因为它威胁着全球粮食安全。农田土壤侵蚀是由农业生产引起的，并受到消费的间接驱动。从消费侧分析其成因和预防策略对于土壤侵蚀控制至关重要。然而，目前相关研究或实践还不够充分。在这项研究中，我们使用修正后的通用土壤流失方程估算了全球农田土壤侵蚀，并将其分配到特定类型的作物上，同时使用多区域投入产出分析模型量化了各国的农田土壤侵蚀足迹。结果表明，在当前的作物贸易体系中，发达经济体通常从发展中经济体或农业发达经济体进口农田土壤侵蚀，是受益者。欧盟是最大的净进口国，而巴西是最大的出口国。间接和诱导部门是主要贡献者，消耗了大约 70.48%的农田土壤侵蚀总量。我们的研究结果揭示了特定区域和产品的贡献者，这可以为可持续粮食生产和消费减少全球农田土壤侵蚀提供信息。
