中国科学数据（中英文网络版）2025，Vol.10Issue(2)：120-129,10.DOI:10.11922/11-6035.csd.2024.0144.zh
青藏高原Landsat系列卫星叶面积指数产品(1990-2023)
Leaf Area Index Products(1990-2023)of the Qinghai Tibet Plateau derived from Landsat series satellite data
摘要
Abstract
The Qinghai-Tibet Plateau is rich in natural resources and diverse in ecosystems,serving as a crucial ecological security barrier for China.Leaf Area Index(LAI)is an important parameter that characterizes vegetation canopy structure.Efficiently and accurately obtaining LAI data for the Qinghai-Tibet Plateau is of great significance for dynamic monitoring of vegetation growth and research on ecological environmental changes in the region.This paper focuses on the Qinghai-Tibet Plateau and employs a method that combines the PROSAIL physical mechanism model and machine learning(random forest method)to retrieve LAI.This approach has produced a long-term series(1990-2023)of annual maximum effective LAI products with a 30-meters resolution for the Qinghai-Tibet Plateau.The nearly 40 years of historical Landsat satellite images archived on the Google Earth Engine platform provide the data support for the production of this dataset.Quality assessments of the product indicate that the annual LAI product of the Qinghai-Tibet Plateau performs well in both direct and cross validation.The product results are accurate and effective,providing robust data product support for research on vegetation resource investigations,ecological environment protection,and restoration on the Qinghai-Tibet Plateau.关键词
LAI/物理模型/Landsat卫星/青藏高原Key words
leaf Area Index/physical model/landsat satellite/Qinghai Tibet Plateau引用本文复制引用
宋逸峰,张兆明,魏明月,何国金,龙腾飞,王桂周..青藏高原Landsat系列卫星叶面积指数产品(1990-2023)[J].中国科学数据（中英文网络版）,2025,10(2):120-129,10.基金项目
第二次青藏高原综合科学考察研究(2019QZKK030701) The Second Tibetan Plateau Scientific Expedition and Research Program(STEP,Grant No.2019QZKK030701) （2019QZKK030701）
