2025年11月索马里、沙特阿拉伯和也门500m沙漠蝗遥感监测数据集

2025年11月，沙漠蝗主要分布于索马里西北部、沙特阿拉伯西南部红海沿岸及毗邻山地，以及也门西部红海沿岸—南部亚丁湾沿岸，危害植被面积分别为1.52万公顷、1.91万公顷和2.11万公顷。预计未来两个月，区域内沙漠蝗总体仍将维持低水平活动。索马里西北部缺乏有效降雨补给，持续繁殖条件不足，灾情大幅发展的可能性较低。沙特阿拉伯西南部红海沿岸在局地降雨作用下或出现小规模繁殖，但受种群基数限制，主要表现为沿海与山前带的局地增多。也门西部红海及南部亚丁湾沿岸在阶段性降雨和沿海绿色植被维持的条件下，可能持续出现少量成虫与若虫；随着内陆植被干燥，蝗虫活动预计仍以沿海岸带短距离移动为主，难以形成大范围迁飞。该时期为索马里和沙特阿拉伯粮食作物的主要生长季和收获季，以及也门粮食作物的主要收获季，故仍需持续关注沙漠蝗灾情动态，以防灾情反复对农牧业生产造成损失。

In November 2025, desert locusts were primarily distributed in northwestern Somalia, the Red Sea coast and adjacent mountainous areas of southwestern Saudi Arabia, as well as the western Red Sea coast and southern Gulf of Aden coast of Yemen. The areas of vegetation damaged by the locusts were 15,200 hectares, 19,100 hectares and 21,100 hectares, respectively.

It is projected that the overall activity of desert locusts in the region will remain at a low level over the next two months. Northwestern Somalia lacks effective rainfall replenishment, with insufficient conditions for sustained breeding, so the likelihood of a substantial outbreak of the locust plague is low. The Red Sea coast of southwestern Saudi Arabia may see small-scale breeding triggered by local rainfall, but constrained by the limited population base, the primary change will be local population increases in coastal and piedmont zones. Along the western Red Sea coast of Yemen and southern Gulf of Aden coast, under the conditions of periodic rainfall and sustained coastal green vegetation, a small number of adults and nymphs may continue to emerge. As inland vegetation dries out, locust activities are expected to remain dominated by short-distance movement along coastal zones, making large-scale migration unlikely.

This period corresponds to the main growing and harvesting seasons for grain crops in Somalia and Saudi Arabia, and the main harvesting season for grain crops in Yemen. Therefore, continuous monitoring of the dynamics of desert locust plagues is necessary to prevent losses to agricultural and pastoral production caused by recurrent locust disasters.

搜集汇总

背景与挑战

背景概述

该数据集是2025年11月针对索马里、沙特阿拉伯和也门沙漠蝗虫的遥感监测数据，空间分辨率为500米，覆盖三个国家受影响区域（如索马里西北部、沙特阿拉伯红海沿岸和也门西部沿海），记录植被影响面积（索马里15.2千公顷、沙特阿拉伯19.1千公顷、也门21.1千公顷），并预测未来蝗虫活动趋势为低水平。数据集包含6个栅格文件（Geotiff格式），总容量3.19 MB，用于支持沙漠蝗灾情监测与评估，有助于预防作物损失和农业生产力下降。