北半球9个历史时期蝗灾分布100-km栅格数据集

A 100-km Raster Dataset of Locust Distribution for Nine Historical Periods in the Northern Hemisphere

蝗灾是由蝗虫大面积发生及迁移造成的自然灾害。蝗灾发生可以跨国、跨洲,因此了解蝗灾发生的大尺度时空特征是全球蝗灾防治的基础工作之一。本研究搜集整理了国际英文期刊文章、专著和《中国三千年气象记录总集》中的历史文献记录,提取北半球蝗灾发生的时间与空间信息;将某一时间段的蝗灾发生地点,按照核密度方法估计蝗灾发生区域,得到北半球9个历史时期蝗灾分布100-km栅格数据集。数据集内容包括:公元1000年以前,公元1000–1200年、1200–1300年、1300–1500年、1500–1700年、1700–1850年、1850–1900年、1900–1950年、1950–2000年共9个时期的北半球蝗灾分布区域。数据为Equal earth投影,空间分辨率为100 km。该数据集存储为.tif格式,由18个数据文件组成,数据量为43.8 KB。

Locust plagues are natural disasters caused by the large-scale occurrence and migration of locusts.Locust occurrence can be transnational and transcontinental;therefore,one of the basic tasks for global locust control is to understand its large-scale spatial and temporal characteristics.In this study,we extracted the temporal and spatial information of locusts in the northern hemisphere from multiple resources,including international English articles,historical documents,and the“Chinese Meteorological Records of the Third Millennium,”and estimated areas of locust occurrence over a period of time.The kernel density method was used to obtain a dataset that included nine periods of locust disaster distribution in the northern hemisphere:before 1000,1000–1200,1200–1300,1300–1500,1500–1700,1700–1850,1850–1900,1900–1950,and 1950–2000.The data were in Equal Earth projections,with a spatial resolution of 100 km.The dataset was archived in.tif format and consisted of 18 data files with a size of 43.8 KB.