Vegetation and Permafrost Thermal State Dataset Along the Gonghe–Yushu Segment of the Qinghai-Kang Engineering Corridor (2000–2020)

In this study, the NDVI data were obtained from Landsat 7 ETM+ and Landsat 8 OLI/TIRS imagery, which underwent atmospheric corrections, cloud removal, and cloud processing using Google Earth Engine (GEE) (https://code.earthengine.google.com). Field-measured MAGT generally at a depth of 15 m were collected for four periods (2010, 2013, 2016, and 2019), primarily in July or August each year, from 16 borehole sites on the northern (K445, MDB, YNG-1, YNG-2, YNG-3, CLP-2, CLP-3, CLP-4, and BSK) and southern (BSKN, CLQ-2, K364-1, K364-2, QSH-1, QSH-2, and QSH-3) flanks of the Bayan Har Mountains. These measurements were taken at the DZAA (Luo et al., 2018b). The digital elevation model (DEM) was sourced from the Japan Aerospace Exploration Agency (JSXA) (https://www.eorc.jaxa.jp/ALOS/en/aw3d30/data/index.htm; accessed on 12 May 2024), and land use and cover change (LUCC) data were obtained from the GlobeLand30 dataset (https://www.globallandcover.com/; accessed on 6 August 2021). Annual precipitation (AP) and land surface temperature (LST) data were retrieved from the Big Earth Data Platform for Three Poles (https://poles.tpdc.ac.cn/zh-hans/; accessed on 16 May 2024) and MAGT data were sourced from the European Space Agency (ESA) climate office (https://catalogue.ceda.ac.uk/uuid/6ebcb73158b14cd5a321b7c0bc6ed393/; accessed on 16 May 2024). MODIS snow cover and evapotranspiration (ET) data were downloaded from the National Tibetan Plateau Data Center (TPDC) (https://data.tpdc.ac.cn; accessed on 03 November 2023). Soil type data were provided by the Chinese Academy of Sciences Resource and Environment Science Data Center (https://www.resdc.cn; accessed on 12 May 2024), while Human Footprint (HFP) data, from (https://doi.org/10.6084/m9.figshare.16571064; accessed on 28 June 2023).