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• W3211117598 abstract "Abstract Thermokarst lakes and ponds (hereafter referred to as thaw lakes) play an important role in the permafrost regions by regulating hydrology, ecology, and biogeochemistry. However, detailed quantitative information on thaw lake extent and distribution remains poorly resolved across the entire permafrost regions on the Qinghai‐Tibet Plateau (QTP). Here, we applied the random forest (RF) model and manual visual vectorization methods to extract thaw lake boundaries on the QTP based on Sentinel‐2 images. Accuracy assessment was comprehensively demonstrated regarding the inherent spatial resolution of imagery and RF model performance. The results showed that the accumulated uncertainty of the total thaw lake area was ±5.75 km 2 , and the mean accuracy (91.9%) from field‐measured boundaries of 132 thaw lakes supported the accuracy of this inventory. A total of ∼161,300 thaw lakes with sizes ranging from 500 m 2 to 3 km 2 were detected, with a total area of ∼2,825.45 ± 5.75 km 2 . Most thaw lakes were detected in the continuous permafrost type (94.1%) and within the elevations of 4,500–5,000 m (68.4%). The small thaw lakes (<10,000 m 2 ) predominated the total lake number (78.9%) but contributed to a small portion of the total lake area (12.7%). Spatial distributions of thaw lakes in terms of different climatic and environmental conditions were also comprehensively explored, including temperature, precipitation, ground thermal stability, active layer thickness, vegetation, soil properties, and underground ice content. This inventory is expected to be incorporated into Earth system models for a more comprehensive projection of the large‐scale biogeochemical feedback of thermokarst landforms on the QTP under continued global warming." @default.
• W3211117598 created "2021-11-08" @default.
• W3211117598 creator A5019691016 @default.
• W3211117598 creator A5029848569 @default.
• W3211117598 creator A5031097454 @default.
• W3211117598 creator A5050998668 @default.
• W3211117598 creator A5065790805 @default.
• W3211117598 creator A5073090743 @default.
• W3211117598 creator A5079932099 @default.
• W3211117598 date "2021-11-01" @default.
• W3211117598 modified "2023-09-30" @default.
• W3211117598 title "Sentinel‐Based Inventory of Thermokarst Lakes and Ponds Across Permafrost Landscapes on the Qinghai‐Tibet Plateau" @default.
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