This dataset is based on the China Land Cover Annual Dataset (CLCD)（ https://www.ncdc.ac.cn/portal/metadata/9de270f3-b5ad-4e19-afc0-2531f3977f2f ）A combination of manual interpretation and algorithmic classification methods was developed to accurately classify and categorize land cover in Northeast China. The dataset includes nine main types of land cover, including cultivated land, forest land, grassland, water area, city, cultivated land, forest land, grassland, water area, city, wetland, sandy land, bare land and ice snow wetland, sandy land, bare land and ice snow.
China Land Cover Annual Dataset (CLCD)（ https://www.ncdc.ac.cn/portal/metadata/9de270f3-b5ad-4e19-afc0-2531f3977f2f ）
Using Landsat images, construct China's first annual land cover product (CLCD) derived from Landsat from 1985 to 2022; Collect training samples by combining stable samples extracted from the China Land Use/Cover Dataset (CLUD) with visual interpretation samples from satellite time series data, Google Earth, and Google Maps; Construct multiple temporal indicators from all available Landsat data and feed them into a random forest classifier to obtain classification results.
Then, the Northeast region was cropped to obtain 1km resolution land use/cover spatial distribution data in the permafrost region of Northeast China.
This dataset has high overall classification accuracy, especially in terms of long-term stable monitoring capabilities for natural features such as forests, grasslands, and bare land, making it suitable for analyzing large-scale ecological evolution processes.
| # | number | name | type |
| 1 | 2022FY100700 | Survey of Permafrost Conditions and Freeze-Thaw Damage in the High-Latitude Regions of Northeast China | Basic Resource Survey Project |
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.NCDC.NIEER.DB7296.2026
10.12072/ncdc.nieer.db7296.2026
