The age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast China
Determining the age and sources of stream water is critical for understanding the watershed hydrological processes and biogeochemical cycle. In this study, daily isotope data of rainfall and runoff, as well as continuously monitored conductivity data from June to October in 2019 in-Laoyeling(LYL) wa...
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ftdoajarticles:oai:doaj.org/article:53fa45b4c58b4a2bad614fc41580c80e 2024-01-28T10:08:32+01:00 The age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast China Xiang Xiao Tijiu Cai Liangliang Duan 2023-12-01T00:00:00Z https://doi.org/10.3389/feart.2023.1225291 https://doaj.org/article/53fa45b4c58b4a2bad614fc41580c80e EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2023.1225291/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2023.1225291 https://doaj.org/article/53fa45b4c58b4a2bad614fc41580c80e Frontiers in Earth Science, Vol 11 (2023) water age streamflow component permafrost region isotope mean transit time Science Q article 2023 ftdoajarticles https://doi.org/10.3389/feart.2023.1225291 2023-12-31T01:47:07Z Determining the age and sources of stream water is critical for understanding the watershed hydrological processes and biogeochemical cycle. In this study, daily isotope data of rainfall and runoff, as well as continuously monitored conductivity data from June to October in 2019 in-Laoyeling(LYL) watershed located in permafrost region of northeastern China were used to separate streamflow components through the application of two independent methods: isotope-based hydrograph separations (IHS) and the conductivity mass balance (CMB) methods. The results showed that stream water in a boreal forest watershed with permafrost of the Daxing’an Mountains is mainly composed of pre-event water. Although the IHS method is more sensitive and provides more details than the CMB method, the results of both methods show a similar trend. The average value of the young water fractions (Fyw) for those aged less than 65 days is 5.6%, while the mean transit time (MTT) was calculated to be 3.33 years. These findings enhance our understanding of the fundamental characteristics of runoff generation mechanisms and changes in runoff components in permafrost regions. Such knowledge is crucial for effective regional water resource management under the context of climate change, such as construction of water conservancy facilities and prediction of flood and drought disasters. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Frontiers in Earth Science 11 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
topic |
water age streamflow component permafrost region isotope mean transit time Science Q |
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water age streamflow component permafrost region isotope mean transit time Science Q Xiang Xiao Tijiu Cai Liangliang Duan The age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast China |
topic_facet |
water age streamflow component permafrost region isotope mean transit time Science Q |
description |
Determining the age and sources of stream water is critical for understanding the watershed hydrological processes and biogeochemical cycle. In this study, daily isotope data of rainfall and runoff, as well as continuously monitored conductivity data from June to October in 2019 in-Laoyeling(LYL) watershed located in permafrost region of northeastern China were used to separate streamflow components through the application of two independent methods: isotope-based hydrograph separations (IHS) and the conductivity mass balance (CMB) methods. The results showed that stream water in a boreal forest watershed with permafrost of the Daxing’an Mountains is mainly composed of pre-event water. Although the IHS method is more sensitive and provides more details than the CMB method, the results of both methods show a similar trend. The average value of the young water fractions (Fyw) for those aged less than 65 days is 5.6%, while the mean transit time (MTT) was calculated to be 3.33 years. These findings enhance our understanding of the fundamental characteristics of runoff generation mechanisms and changes in runoff components in permafrost regions. Such knowledge is crucial for effective regional water resource management under the context of climate change, such as construction of water conservancy facilities and prediction of flood and drought disasters. |
format |
Article in Journal/Newspaper |
author |
Xiang Xiao Tijiu Cai Liangliang Duan |
author_facet |
Xiang Xiao Tijiu Cai Liangliang Duan |
author_sort |
Xiang Xiao |
title |
The age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast China |
title_short |
The age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast China |
title_full |
The age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast China |
title_fullStr |
The age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast China |
title_full_unstemmed |
The age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast China |
title_sort |
age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast china |
publisher |
Frontiers Media S.A. |
publishDate |
2023 |
url |
https://doi.org/10.3389/feart.2023.1225291 https://doaj.org/article/53fa45b4c58b4a2bad614fc41580c80e |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Frontiers in Earth Science, Vol 11 (2023) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2023.1225291/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2023.1225291 https://doaj.org/article/53fa45b4c58b4a2bad614fc41580c80e |
op_doi |
https://doi.org/10.3389/feart.2023.1225291 |
container_title |
Frontiers in Earth Science |
container_volume |
11 |
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1789337400692965376 |