Spatiotemporal variability of drought in the northern part of northeast China
The thermal and moisture balance of permafrost regions has been altered by global warming, profoundly influencing vegetation dynamics and forest carbon cycling. To understand the spatial and temporal characteristics and driving forces responsible for changes in moisture conditions in the permafrost...
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Online Access: | http://ir.imde.ac.cn/handle/131551/23290 https://doi.org/10.1002/hyp.11503 |
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/23290 2023-05-15T17:56:12+02:00 Spatiotemporal variability of drought in the northern part of northeast China Zhang, Xuanwen Liu, Xiaohong Wang, Wenzhi Zhang, Tingjun Zeng, Xiaomin Xu, Guobao Wu, Guoju Kang, Huhu 2018-05-15 http://ir.imde.ac.cn/handle/131551/23290 https://doi.org/10.1002/hyp.11503 英语 eng WILEY HYDROLOGICAL PROCESSES http://ir.imde.ac.cn/handle/131551/23290 doi:10.1002/hyp.11503 drought global warming northeastern China permafrost region spatial variation temporal variation CLIMATE-CHANGE PRECIPITATION PERMAFROST DEGRADATION PLATEAU RUSSIA TRENDS REGION FOREST TESTS Water Resources 期刊论文 2018 ftchinacadscimhe https://doi.org/10.1002/hyp.11503 2022-12-19T18:20:38Z The thermal and moisture balance of permafrost regions has been altered by global warming, profoundly influencing vegetation dynamics and forest carbon cycling. To understand the spatial and temporal characteristics and driving forces responsible for changes in moisture conditions in the permafrost region of the Greater and Lesser Hinggan Mountains, northeastern China, we assessed long-term trends for temperature, precipitation, and the standardized precipitation-evapotranspiration index. From 1951 to 2014, annual mean temperature had a significant increase trend and the annual precipitation was not with significant trend. Since 1951, the annual standardized precipitation-evapotranspiration index has decreased significantly at the boundary between regions with seasonal soil freezing and permafrost, suggesting that conspicuous permafrost degradation and moisture loss has occurred. The study area can be divided into 4 parts with a different balance between thermal and moisture conditions: the northern Songnen Plains, the Hulun Buir Sand Land, the middle reaches of the Heilongjiang River, and the Mohe region. However, only the middle reaches of the Heilongjiang River showed an obvious long-term drying trend. The 4 areas showed quasi-periodic oscillation and sea surface temperature during the winter half-year affected drought intensity in the northern of Songnen Plains. When El Nino strengthened, moisture conditions increased in the northern of Songnen Plains, whereas stronger La Nina events decreased water availability. The result of this study will be beneficial for regional water resource management and prepare for potential drought hazards in the northeastern China. Report permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Hydrological Processes 32 10 1449 1460 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
drought global warming northeastern China permafrost region spatial variation temporal variation CLIMATE-CHANGE PRECIPITATION PERMAFROST DEGRADATION PLATEAU RUSSIA TRENDS REGION FOREST TESTS Water Resources |
spellingShingle |
drought global warming northeastern China permafrost region spatial variation temporal variation CLIMATE-CHANGE PRECIPITATION PERMAFROST DEGRADATION PLATEAU RUSSIA TRENDS REGION FOREST TESTS Water Resources Zhang, Xuanwen Liu, Xiaohong Wang, Wenzhi Zhang, Tingjun Zeng, Xiaomin Xu, Guobao Wu, Guoju Kang, Huhu Spatiotemporal variability of drought in the northern part of northeast China |
topic_facet |
drought global warming northeastern China permafrost region spatial variation temporal variation CLIMATE-CHANGE PRECIPITATION PERMAFROST DEGRADATION PLATEAU RUSSIA TRENDS REGION FOREST TESTS Water Resources |
description |
The thermal and moisture balance of permafrost regions has been altered by global warming, profoundly influencing vegetation dynamics and forest carbon cycling. To understand the spatial and temporal characteristics and driving forces responsible for changes in moisture conditions in the permafrost region of the Greater and Lesser Hinggan Mountains, northeastern China, we assessed long-term trends for temperature, precipitation, and the standardized precipitation-evapotranspiration index. From 1951 to 2014, annual mean temperature had a significant increase trend and the annual precipitation was not with significant trend. Since 1951, the annual standardized precipitation-evapotranspiration index has decreased significantly at the boundary between regions with seasonal soil freezing and permafrost, suggesting that conspicuous permafrost degradation and moisture loss has occurred. The study area can be divided into 4 parts with a different balance between thermal and moisture conditions: the northern Songnen Plains, the Hulun Buir Sand Land, the middle reaches of the Heilongjiang River, and the Mohe region. However, only the middle reaches of the Heilongjiang River showed an obvious long-term drying trend. The 4 areas showed quasi-periodic oscillation and sea surface temperature during the winter half-year affected drought intensity in the northern of Songnen Plains. When El Nino strengthened, moisture conditions increased in the northern of Songnen Plains, whereas stronger La Nina events decreased water availability. The result of this study will be beneficial for regional water resource management and prepare for potential drought hazards in the northeastern China. |
format |
Report |
author |
Zhang, Xuanwen Liu, Xiaohong Wang, Wenzhi Zhang, Tingjun Zeng, Xiaomin Xu, Guobao Wu, Guoju Kang, Huhu |
author_facet |
Zhang, Xuanwen Liu, Xiaohong Wang, Wenzhi Zhang, Tingjun Zeng, Xiaomin Xu, Guobao Wu, Guoju Kang, Huhu |
author_sort |
Zhang, Xuanwen |
title |
Spatiotemporal variability of drought in the northern part of northeast China |
title_short |
Spatiotemporal variability of drought in the northern part of northeast China |
title_full |
Spatiotemporal variability of drought in the northern part of northeast China |
title_fullStr |
Spatiotemporal variability of drought in the northern part of northeast China |
title_full_unstemmed |
Spatiotemporal variability of drought in the northern part of northeast China |
title_sort |
spatiotemporal variability of drought in the northern part of northeast china |
publisher |
WILEY |
publishDate |
2018 |
url |
http://ir.imde.ac.cn/handle/131551/23290 https://doi.org/10.1002/hyp.11503 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
HYDROLOGICAL PROCESSES http://ir.imde.ac.cn/handle/131551/23290 doi:10.1002/hyp.11503 |
op_doi |
https://doi.org/10.1002/hyp.11503 |
container_title |
Hydrological Processes |
container_volume |
32 |
container_issue |
10 |
container_start_page |
1449 |
op_container_end_page |
1460 |
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1766164315787755520 |