Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018
The ecosystems of Qinghai-Tibetan Plateau (QTP) are very sensitive to climate change because of their unique structure and function. However, little attention has been paid to variations in cold non-growing season. In this study, based on daily mean temperature from 63 meteorological stations throug...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/56113 2023-05-15T17:58:15+02:00 Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018 Zhao, Dongsheng Gao, Xuan Yang, Yi 2021-10-04 http://ir.imde.ac.cn/handle/131551/56113 https://doi.org/10.1007/s00704-021-03798-4 英语 eng SPRINGER WIEN THEORETICAL AND APPLIED CLIMATOLOGY http://ir.imde.ac.cn/handle/131551/56113 doi:10.1007/s00704-021-03798-4 CLIMATE-CHANGE PERMAFROST REGION ALPINE MEADOW TEMPERATURE VEGETATION ACCLIMATION RESPIRATION EXTREMES SHIFTS SEASON Meteorology & Atmospheric Sciences 期刊论文 2021 ftchinacadscimhe https://doi.org/10.1007/s00704-021-03798-4 2022-12-19T18:29:32Z The ecosystems of Qinghai-Tibetan Plateau (QTP) are very sensitive to climate change because of their unique structure and function. However, little attention has been paid to variations in cold non-growing season. In this study, based on daily mean temperature from 63 meteorological stations throughout the QTP during the period 1961 - 2018, the spatial and temporal variations in the freezing period (FP) were investigated. The FP was defined as the period between the date of the first autumn freeze and the date of the first spring thaw in the second year. Understanding how the FP changes are imperative in predicting future climate change and decision-making for implementing ecological conservation on the plateau. The results showed that the start of freezing period (SFP) exhibited a pronounced increasing trend with a rate of 0.0704 days year(-1) and the end of freezing period (EFP) showed an obviously decreasing trend with a rate of - 0.2537 days year(-1) at the regional scale. The length of freezing period (LFP) presented a significant negative trend at a rate of - 0.3256 days year(-1) for regional scale, which was mainly attributed to the earlier EFP. Spatially, later mean SFP, earlier mean EFP, and shorter mean LFP mainly occurred in the south of the QTP, covered the plateau temperate semi-arid (HIIC2) and plateau temperate humid/sub-humid (HIIAB1). For interannual trends, greater delayed SFP and greater advanced EFP were mainly observed in the south and east of the plateau. Furthermore, this study found that the variations in the SFP, EFP, and LFP were highly dependent on the elevation with EFP and LFP are positively correlated with elevation, while SFP is negatively correlated with elevation. At the regional scale, mean annual temperature was positively correlated with SFP and negatively correlated with EFP and LFP. Increasing temperature dominated interannual variation in FP on the plateau. Report permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Theoretical and Applied Climatology 146 3-4 1355 1366 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
CLIMATE-CHANGE PERMAFROST REGION ALPINE MEADOW TEMPERATURE VEGETATION ACCLIMATION RESPIRATION EXTREMES SHIFTS SEASON Meteorology & Atmospheric Sciences |
spellingShingle |
CLIMATE-CHANGE PERMAFROST REGION ALPINE MEADOW TEMPERATURE VEGETATION ACCLIMATION RESPIRATION EXTREMES SHIFTS SEASON Meteorology & Atmospheric Sciences Zhao, Dongsheng Gao, Xuan Yang, Yi Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018 |
topic_facet |
CLIMATE-CHANGE PERMAFROST REGION ALPINE MEADOW TEMPERATURE VEGETATION ACCLIMATION RESPIRATION EXTREMES SHIFTS SEASON Meteorology & Atmospheric Sciences |
description |
The ecosystems of Qinghai-Tibetan Plateau (QTP) are very sensitive to climate change because of their unique structure and function. However, little attention has been paid to variations in cold non-growing season. In this study, based on daily mean temperature from 63 meteorological stations throughout the QTP during the period 1961 - 2018, the spatial and temporal variations in the freezing period (FP) were investigated. The FP was defined as the period between the date of the first autumn freeze and the date of the first spring thaw in the second year. Understanding how the FP changes are imperative in predicting future climate change and decision-making for implementing ecological conservation on the plateau. The results showed that the start of freezing period (SFP) exhibited a pronounced increasing trend with a rate of 0.0704 days year(-1) and the end of freezing period (EFP) showed an obviously decreasing trend with a rate of - 0.2537 days year(-1) at the regional scale. The length of freezing period (LFP) presented a significant negative trend at a rate of - 0.3256 days year(-1) for regional scale, which was mainly attributed to the earlier EFP. Spatially, later mean SFP, earlier mean EFP, and shorter mean LFP mainly occurred in the south of the QTP, covered the plateau temperate semi-arid (HIIC2) and plateau temperate humid/sub-humid (HIIAB1). For interannual trends, greater delayed SFP and greater advanced EFP were mainly observed in the south and east of the plateau. Furthermore, this study found that the variations in the SFP, EFP, and LFP were highly dependent on the elevation with EFP and LFP are positively correlated with elevation, while SFP is negatively correlated with elevation. At the regional scale, mean annual temperature was positively correlated with SFP and negatively correlated with EFP and LFP. Increasing temperature dominated interannual variation in FP on the plateau. |
format |
Report |
author |
Zhao, Dongsheng Gao, Xuan Yang, Yi |
author_facet |
Zhao, Dongsheng Gao, Xuan Yang, Yi |
author_sort |
Zhao, Dongsheng |
title |
Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018 |
title_short |
Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018 |
title_full |
Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018 |
title_fullStr |
Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018 |
title_full_unstemmed |
Trends of freezing period and its main cause on the Qinghai-Tibetan Plateau from 1961 to 2018 |
title_sort |
trends of freezing period and its main cause on the qinghai-tibetan plateau from 1961 to 2018 |
publisher |
SPRINGER WIEN |
publishDate |
2021 |
url |
http://ir.imde.ac.cn/handle/131551/56113 https://doi.org/10.1007/s00704-021-03798-4 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
THEORETICAL AND APPLIED CLIMATOLOGY http://ir.imde.ac.cn/handle/131551/56113 doi:10.1007/s00704-021-03798-4 |
op_doi |
https://doi.org/10.1007/s00704-021-03798-4 |
container_title |
Theoretical and Applied Climatology |
container_volume |
146 |
container_issue |
3-4 |
container_start_page |
1355 |
op_container_end_page |
1366 |
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1766166815908560896 |