Responsive characteristics of soil water regimes to rainfall events in a boreal larch forest in China: Dynamic processes and decoupling effects
Investigating the soil water dynamics in relation to rainfall events is of great importance for enhancing our understanding of eco-hydrological processes and improving soil hydrological models. However, the lack of long-term, in-situ observational data and the neglect of soil moisture decoupling hav...
Published in: | Geoderma |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
1481
|
Subjects: | |
Online Access: | https://doi.org/10.1016/j.geoderma.2023.116741 https://doaj.org/article/02c63c81f9d446bd84a08f9a4a4410d2 |
id |
ftdoajarticles:oai:doaj.org/article:02c63c81f9d446bd84a08f9a4a4410d2 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:02c63c81f9d446bd84a08f9a4a4410d2 2024-01-07T09:45:59+01:00 Responsive characteristics of soil water regimes to rainfall events in a boreal larch forest in China: Dynamic processes and decoupling effects Zhipeng Xu Peng Hu Xiuling Man Liangliang Duan Tijiu Cai 2024-01-01T00:00:00Z https://doi.org/10.1016/j.geoderma.2023.116741 https://doaj.org/article/02c63c81f9d446bd84a08f9a4a4410d2 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S0016706123004184 https://doaj.org/toc/1872-6259 1872-6259 doi:10.1016/j.geoderma.2023.116741 https://doaj.org/article/02c63c81f9d446bd84a08f9a4a4410d2 Geoderma, Vol 441, Iss , Pp 116741- (2024) Soil water content Dynamic processes Rainfall events Decoupling Boreal forests Science Q article 1481 ftdoajarticles https://doi.org/10.1016/j.geoderma.2023.116741 2023-12-10T01:37:59Z Investigating the soil water dynamics in relation to rainfall events is of great importance for enhancing our understanding of eco-hydrological processes and improving soil hydrological models. However, the lack of long-term, in-situ observational data and the neglect of soil moisture decoupling have hindered the study of dynamic responses in soil water regimes to rainfall events in China’s boreal forests with permafrost. This study utilized soil water content monitoring and rainfall observational data from the Xing’an larch (Larix gmenilii) forest in Northeast China during the growing seasons of 2015–2021 to evaluate the dynamic response of soil water regimes to rainfall events. The results show a significant increase in the decoupling strength between soil water and rainfall with increasing soil depth. The thresholds of rainfall amount (RA), duration (RD), and intensity (RI) for triggering soil wetting events also increased. Soil water dynamic processes exhibited inconsistent and complex patterns in response to the hierarchical effects of RA, RD, and RI along the vertical soil profile. However, the dominant controls on soil water dynamic responses to RA, RD, and RI varied depending on specific response metrics, such as the accumulated soil water content increments (ASMI), duration time (DT), and the mean slope of the soil wetting curve (Sm). Interestingly, the dominant factor for affecting response time (RT) changed from RI to RD as soil depths increased. Importantly, the decoupling of soil moisture led to a substantial reduction in the responsiveness of these metrics of subsurface soil water to rainfall, and the role of the decoupling effect diminished with increasing soil depths. These findings highlight the complexity of the dynamic response of soil water to rainfall events and provide new insights into the relationship between soil water dynamics and rainfall features through the introduction of the decoupling of soil moisture in boreal forests. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Geoderma 441 116741 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Soil water content Dynamic processes Rainfall events Decoupling Boreal forests Science Q |
spellingShingle |
Soil water content Dynamic processes Rainfall events Decoupling Boreal forests Science Q Zhipeng Xu Peng Hu Xiuling Man Liangliang Duan Tijiu Cai Responsive characteristics of soil water regimes to rainfall events in a boreal larch forest in China: Dynamic processes and decoupling effects |
topic_facet |
Soil water content Dynamic processes Rainfall events Decoupling Boreal forests Science Q |
description |
Investigating the soil water dynamics in relation to rainfall events is of great importance for enhancing our understanding of eco-hydrological processes and improving soil hydrological models. However, the lack of long-term, in-situ observational data and the neglect of soil moisture decoupling have hindered the study of dynamic responses in soil water regimes to rainfall events in China’s boreal forests with permafrost. This study utilized soil water content monitoring and rainfall observational data from the Xing’an larch (Larix gmenilii) forest in Northeast China during the growing seasons of 2015–2021 to evaluate the dynamic response of soil water regimes to rainfall events. The results show a significant increase in the decoupling strength between soil water and rainfall with increasing soil depth. The thresholds of rainfall amount (RA), duration (RD), and intensity (RI) for triggering soil wetting events also increased. Soil water dynamic processes exhibited inconsistent and complex patterns in response to the hierarchical effects of RA, RD, and RI along the vertical soil profile. However, the dominant controls on soil water dynamic responses to RA, RD, and RI varied depending on specific response metrics, such as the accumulated soil water content increments (ASMI), duration time (DT), and the mean slope of the soil wetting curve (Sm). Interestingly, the dominant factor for affecting response time (RT) changed from RI to RD as soil depths increased. Importantly, the decoupling of soil moisture led to a substantial reduction in the responsiveness of these metrics of subsurface soil water to rainfall, and the role of the decoupling effect diminished with increasing soil depths. These findings highlight the complexity of the dynamic response of soil water to rainfall events and provide new insights into the relationship between soil water dynamics and rainfall features through the introduction of the decoupling of soil moisture in boreal forests. |
format |
Article in Journal/Newspaper |
author |
Zhipeng Xu Peng Hu Xiuling Man Liangliang Duan Tijiu Cai |
author_facet |
Zhipeng Xu Peng Hu Xiuling Man Liangliang Duan Tijiu Cai |
author_sort |
Zhipeng Xu |
title |
Responsive characteristics of soil water regimes to rainfall events in a boreal larch forest in China: Dynamic processes and decoupling effects |
title_short |
Responsive characteristics of soil water regimes to rainfall events in a boreal larch forest in China: Dynamic processes and decoupling effects |
title_full |
Responsive characteristics of soil water regimes to rainfall events in a boreal larch forest in China: Dynamic processes and decoupling effects |
title_fullStr |
Responsive characteristics of soil water regimes to rainfall events in a boreal larch forest in China: Dynamic processes and decoupling effects |
title_full_unstemmed |
Responsive characteristics of soil water regimes to rainfall events in a boreal larch forest in China: Dynamic processes and decoupling effects |
title_sort |
responsive characteristics of soil water regimes to rainfall events in a boreal larch forest in china: dynamic processes and decoupling effects |
publisher |
Elsevier |
publishDate |
1481 |
url |
https://doi.org/10.1016/j.geoderma.2023.116741 https://doaj.org/article/02c63c81f9d446bd84a08f9a4a4410d2 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Geoderma, Vol 441, Iss , Pp 116741- (2024) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0016706123004184 https://doaj.org/toc/1872-6259 1872-6259 doi:10.1016/j.geoderma.2023.116741 https://doaj.org/article/02c63c81f9d446bd84a08f9a4a4410d2 |
op_doi |
https://doi.org/10.1016/j.geoderma.2023.116741 |
container_title |
Geoderma |
container_volume |
441 |
container_start_page |
116741 |
_version_ |
1787427649527742464 |