Desert Locust Monitoring in Egypt, Ethiopia and Saudi Arabia in 2025/05(Spatial resolution-500m)

Remote sensing monitoring showed that, in May 2025, desert locusts were primarily distributed in the western regions and the central Nile Valley of Egypt, the northeastern regions of Ethiopia, and the northern and central inland areas of Saudi Arabia, affecting 16.3, 15.2, and 18.3 thousand hectares of vegetation, respectively. Over the next two months, rainfall is expected to remain low across most parts of Egypt. As a result, spring breeding will come to an end, locust populations will continue to decline and a gradual southward migration is anticipated. Localized greening in northeastern and eastern border areas of Ethiopia may create favorable breeding conditions, potentially attracting incoming adult swarms and triggering limited locust activity. However, overall locust levels are expected to remain low. In Saudi Arabia, increased rainfall in inland areas is likely to improve vegetation in regions such as Ha'il, leading to continued adult emergence and small-scale breeding. This period coincides with the main growing and harvest season for food crops in Egypt and Saudi Arabia, and the primary planting season for food crops in Ethiopia. Therefore, continuous monitoring of desert locust dynamics remains essential to prevent recurring damage to agricultural and pastoral production.遥感监测结果显示，2025年5月，沙漠蝗主要分布于埃及西部区域及尼罗河中部河谷、埃塞俄比亚东北部区域，以及沙特阿拉伯北部与中部内陆地区，分别影响了16.3万、15.2万及18.3万公顷的植被。 未来两个月内，埃及大部分区域的降雨量预计仍将维持低位。受此影响，春季蝗群繁殖将宣告结束，蝗群种群数量将持续下降，且预计会逐步向南迁徙。埃塞俄比亚东北部及东部边境区域的局部植被恢复可能创造适宜的繁殖条件，或会诱使迁入的成虫蝗群聚集，并引发有限范围的蝗群活动。不过整体蝗群密度预计仍将维持低位。 在沙特阿拉伯，内陆地区降雨量增加或会改善哈伊勒等区域的植被状况，进而导致成虫持续羽化并出现小规模繁殖。此时间段恰逢埃及与沙特阿拉伯粮食作物的主要生长及收获季，同时也是埃塞俄比亚粮食作物的主要播种季。因此，持续监测沙漠蝗种群动态仍是防范农牧业生产遭受反复蝗灾破坏的必要举措。