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遥感监测和评估2016-2020年全球植被状况和变化

Li Li¹, Xiaozhou Xin¹, Jing Zhao¹

¹State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China.

Sensors (Basel, Switzerland)

|October 28, 2023

概括

全球植被生态系统显示,从2016年到2020年,叶面积指数 (LAI) 增加. 大多数生态系统的面积略有增加,全球各个地区的森林,草原和耕地显著增长.

科学领域:

生态与环境科学生态与环境科学
遥感遥感遥感遥感
可持续发展目标 (SDG) 的目标

背景情况:

植被对陆地生态系统至关重要,但面临着气候变化和森林砍伐等威胁.
遥感对于监测植被状况和生态研究和资源管理的动态至关重要.

研究的目的:

评估主要植被生态系统的全球状态和转型,使用与SDG15一致的综合指标.
分析2016年至2020年叶面积指数 (LAI) 和生态系统面积的变化.

主要方法:

利用全球500米分辨率的遥感数据进行植被LAI和土地覆盖分类 (2016-2020).
计算了年度平均LAI,确定了异常,并评估了主要植被类型的变化率.
评估生态系统面积变化及其与LAI趋势的相关性.

主要成果:

与2016年相比,在2020年观察到主要植被生态系统的平均LAI的全球增加.
面积略微增加的生态系统是最常见的 (34.23%),而显著的减少是最不常见的 (6.09%).
东欧,中非和南美/中美洲的森林和草原面积和LAI显著增加. 耕地扩张和LAI增长发生在南非,北欧和东非.

结论:

遥感有效监测全球植被动态和生态系统健康状况.
调查结果表明,主要地区的植被恢复和扩张的总体趋势与可持续土地管理目标保持一致.
区域差异突出了针对不同生态系统类型的有针对性的保护和管理策略的需要.

关键词:

全球发行全球分销.叶面积指数叶面积指数远程传感监控监控监控植物状况植物状况

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