青藏高原及周边区域30米影像（1980，2000，2020）

本数据集为青藏高原及周边区域（1980年，2000年和2020年）不同时段Landsat系列遥感影像，覆盖范围包括青藏高原及周边区域覆盖范围包括横断山区、青藏高原东北缘、喜马拉雅山、中巴经济走廊及天山山脉以及高原面，其分辨率为30m。本数据整理和收集了青藏高原及周边区域（1980年，2000年和2020年）不同时段Landsat系列遥感影像，数据来源是 GEE （Google Earth Engine，https: / /code. earthengine. google. com /）平台从美国地质调查局（United States Geological Survey，USGS）获取的数据集，其分辨率为30 m。首先基于 GEE （Google Earth Engine，https: / /code. earthengine. google. com /）平台进行遥感影像的筛选，去云拼接等预处理，将 GEE 平台进行去云拼接后的数据存储到Google云盘，然后进行下载。由于磁盘存储有数据大小限制，将下载的数据在ArcGIS 10.5平台进行进一步的镶嵌和裁剪处理得到最终的数据。本数据集是开展泥石流孕灾环境背景调查与分析的基础，同时能够对植被信息、冰川信息和水体信息等与泥石流孕灾背景紧密相关的影响因素进行提取分析。

This dataset comprises Landsat series remote sensing images of the Qinghai-Tibet Plateau and its surrounding regions at three distinct time periods: 1980, 2000, and 2020. The coverage scope includes the Hengduan Mountains, northeastern margin of the Qinghai-Tibet Plateau, Himalayas, China-Pakistan Economic Corridor, Tianshan Mountains, and the plateau surface, with a spatial resolution of 30 m.

This dataset collects and organizes the aforementioned Landsat remote sensing images of the Qinghai-Tibet Plateau and its surrounding areas. The original data was sourced from datasets obtained by the Google Earth Engine (GEE, https://code.earthengine.google.com/) platform from the United States Geological Survey (USGS), with a spatial resolution of 30 m. First, preprocessing operations including remote sensing image screening, cloud removal and mosaicking were carried out on the GEE platform. The preprocessed data after cloud removal and mosaicking on the GEE platform was stored in Google Drive and then downloaded. Given the storage size limit of local disks, the downloaded data was further mosaicked and clipped using ArcGIS 10.5 to generate the final dataset.

This dataset serves as a fundamental basis for surveys and analyses of the environmental background of debris flow disaster formation. It also supports the extraction and analysis of factors closely related to the debris flow disaster-causing background, such as vegetation information, glacier information and water body information.