华北地区2001年干旱程度及其对植被影响数据集

中国华北平原及周边的大部分区域属于温带半干旱和半湿润季风气候区，冬季寒冷干燥、夏季高温多雨；该地区主要植被类型包括耕地、典型草原、郁闭灌丛和稀疏灌丛，气候变化和人类活动对该地区的植被生长具有重要影响。该地区的耕地大部分为灌溉耕地，在整个干旱事件过程中，该地区耕地的LAI和FAPAR较多年平均水平下降的面积比例分别约为70%和60%，而同期典型草原LAI和 FAPAR较多年平均水平下降的面积比例均为90%左右，说明灌溉减轻了干旱对该地区耕地等影响，使耕地上的作物抵抗干旱的能力高于典型草原。

Most areas of the North China Plain and its surrounding regions belong to the temperate semi-arid and semi-humid monsoon climate zone, characterized by cold, dry winters and hot, rainy summers. The main vegetation types in this region include cropland, typical steppe, closed shrubland, and open shrubland. Climate change and human activities exert significant impacts on vegetation growth in this region. Most of the cropland in this region is irrigated cropland. During the entire drought event, the area proportions where LAI and FAPAR of cropland decreased relative to their multi-year average levels were approximately 70% and 60%, respectively. Meanwhile, the area proportions where LAI and FAPAR of typical steppe decreased relative to their multi-year average levels were both around 90%. This indicates that irrigation mitigates the impacts of drought on cropland and other land types in this region, endowing crops on cropland with a higher drought resistance capacity than typical steppe.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于2001年华北平原的干旱程度及其对植被的影响，基于标准化降水蒸散指数（SPEI）识别干旱事件，并利用植被遥感参数（如LAI和FAPAR）的异常进行分析。数据集以1km分辨率的栅格数据呈现，通过对比耕地和典型草地的植被响应，揭示了灌溉在减轻干旱对耕地植被影响方面的关键作用，数据质量高，适用于地理学和生态学相关研究。