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Land use and cover change in Northeast China and its impacts on the Xing'an permafrost in 1980-2020
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  • Hongwei Wang,
  • Huijun Jin,
  • Xiaoying Li,
  • Ruixia He,
  • Raul-David Șerban,
  • Xiaoying Jin,
  • Xue Yang,
  • Mihaela Șerban,
  • Suiqiao Yang,
  • Wenhui Wang
Hongwei Wang
Northwest Institute of Eco-Environment and Resources

Corresponding Author:[email protected]

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Huijun Jin
Northeast Forestry University
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Xiaoying Li
Northeast Forestry University
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Ruixia He
Northwest Institute of Eco-Environment and Resources
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Raul-David Șerban
West University of Timișoara
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Xiaoying Jin
Northeast Forestry University
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Xue Yang
Northeast Forestry University
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Mihaela Șerban
West University of Timișoara
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Suiqiao Yang
Northeast Forestry University
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Wenhui Wang
Northeast Forestry University
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Abstract

Vegetation plays important roles in the development and protection of permafrost; it is one of the main local and ecosystemic factors that affect the thermal stability of the underlying soil strata. Multi-period land use and cover change (LUCC) data and long-time series of air temperature were chosed. Based on these data, spatiotemporal changes in mean annual air temperature (MAAT) were simulated by the Ordinary Least Squares (OLS) method and Ordinary Kriging (OK) model in the 1980s-2010s in Northeast China. The influences of LUCC on MAAT in Northeast China and distribution of the Xing’an permafrost were analyzed and the results showed that: (1) Decadal average of MAAT increased from 4.60oC (1980s) to 5.38oC (2010s) in Northeast China, with an upward trend of 0.25oC/10a. (2) During the 1980s to 2010s, the total permafrost area showed a decreasing trend (3.668×104 km2/10a). (3) In permafrost regions, LUCC had undergone significant structural changes: forested land showed a consistent decreasing trend and other lands showed an overall increasing trend. (4) The effects of different LUCC on MAAT in the permafrost region varied substantially. The mean MAAT of forested land was the lowest (2.33oC), and; that of unused land, the highest (0.37oC). The change rate in MAAT of cultivated land was the highest (0.37oC/10a), and; that of unused land, the lowest (0.28oC/10a). (5) The degradation rates of permafrost in forested land (1.822×104 km2/10a) and grassland (1.397×104 km2/10a) were the largest from 1980s to 2010s.
07 Aug 2021Submitted to Land Degradation & Development
12 Aug 2021Submission Checks Completed
12 Aug 2021Assigned to Editor
16 Sep 2021Reviewer(s) Assigned
09 Oct 2021Review(s) Completed, Editorial Evaluation Pending
18 Oct 2021Editorial Decision: Revise Major
12 Dec 20211st Revision Received
14 Dec 2021Submission Checks Completed
14 Dec 2021Assigned to Editor
31 Dec 2021Review(s) Completed, Editorial Evaluation Pending
10 Feb 2022Editorial Decision: Revise Major
21 Feb 20222nd Revision Received
23 Feb 2022Submission Checks Completed
23 Feb 2022Assigned to Editor
08 Mar 2022Review(s) Completed, Editorial Evaluation Pending
11 Apr 2022Editorial Decision: Revise Minor
16 Apr 20223rd Revision Received
20 Apr 2022Submission Checks Completed
20 Apr 2022Assigned to Editor
04 May 2022Review(s) Completed, Editorial Evaluation Pending
29 May 2022Editorial Decision: Accept
02 Jun 2022Published in Land Degradation & Development. 10.1002/ldr.4377