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 D_ZAA (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).