Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau
The soil freeze-thaw process has undergone significant changes on the Tibetan Plateau (TP) in the context of global change, resulting in the changes of soil physical and chemical properties, thereby affecting the vegetation phenology and photosynthesis through affecting the utilization capacity of C...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | Environmental Research Letters |
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| Online Access: | https://doi.org/10.1088/1748-9326/ad1d4f |
| _version_ | 1797346901179236352 |
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| author | Qing Peng Binghao Jia Xin Lai Longhuan Wang Qifeng Huang |
| author_facet | Qing Peng Binghao Jia Xin Lai Longhuan Wang Qifeng Huang |
| author_sort | Qing Peng |
| collection | DOAJ |
| description | The soil freeze-thaw process has undergone significant changes on the Tibetan Plateau (TP) in the context of global change, resulting in the changes of soil physical and chemical properties, thereby affecting the vegetation phenology and photosynthesis through affecting the utilization capacity of CO _2 and light by vegetation. However, little is known about how soil temperature (ST) and soil moisture (SM) affect the gross primary productivity (GPP) on the TP at different seasons and elevations. In this study, the spatiotemporal variation patterns of GPP, ST, and SM were analyzed based on the Community Land Model version 5.0 (CLM5.0) simulations in order to illustrate the impacts of ST and SM in surface (0–10 cm) and root zone soil (0–100 cm) on GPP between 1979 and 2020. The results showed that the CLM5.0-based GPP and ST were in good agreement with in situ observations. ST, SM and GPP increased at the rates of 0.04 °C a ^−1 , 2.4 × 10 ^−4 mm ^3 mm ^−3 a ^−1 , and 5.36 g C m ^−2 a ^−2 , respectively. SM dominated the variations of GPP in winter (64.3%), while ST almost was the dominant factor in other periods, especially spring (99.9%) and autumn (94.7%). The explanatory power of ST and SM for GPP increased with elevation, especially for ST. The relative contributions of ST and SM to GPP at different time scales in root zone soil were similar to those in surface soil. This study provided a new understanding of how soil freeze-thaw affected GPP changes on the TP in the context of the intensification of warming and humidification. |
| first_indexed | 2024-03-08T11:39:54Z |
| format | Article |
| id | doaj.art-e8a9c9481cfd4a0bbd50226c1cc40417 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-08T11:39:54Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-e8a9c9481cfd4a0bbd50226c1cc404172024-01-25T09:25:26ZengIOP PublishingEnvironmental Research Letters1748-93262024-01-0119202402110.1088/1748-9326/ad1d4fIncreasing gross primary productivity under soil warming and wetting on the Tibetan PlateauQing Peng0Binghao Jia1https://orcid.org/0000-0002-9354-0457Xin Lai2Longhuan Wang3Qifeng Huang4School of Atmospheric Sciences, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Joint Laboratory of Climate and Environment Change, Chengdu Plain Urban Meteorology and Environment Observation and Research Station of Sichuan Province, Chengdu University of Information Technology , Chengdu 610225, People’s Republic of China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing 100029, People’s Republic of ChinaState Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing 100029, People’s Republic of ChinaSchool of Atmospheric Sciences, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Joint Laboratory of Climate and Environment Change, Chengdu Plain Urban Meteorology and Environment Observation and Research Station of Sichuan Province, Chengdu University of Information Technology , Chengdu 610225, People’s Republic of ChinaState Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing 100029, People’s Republic of ChinaSchool of Atmospheric Sciences, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Joint Laboratory of Climate and Environment Change, Chengdu Plain Urban Meteorology and Environment Observation and Research Station of Sichuan Province, Chengdu University of Information Technology , Chengdu 610225, People’s Republic of China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing 100029, People’s Republic of ChinaThe soil freeze-thaw process has undergone significant changes on the Tibetan Plateau (TP) in the context of global change, resulting in the changes of soil physical and chemical properties, thereby affecting the vegetation phenology and photosynthesis through affecting the utilization capacity of CO _2 and light by vegetation. However, little is known about how soil temperature (ST) and soil moisture (SM) affect the gross primary productivity (GPP) on the TP at different seasons and elevations. In this study, the spatiotemporal variation patterns of GPP, ST, and SM were analyzed based on the Community Land Model version 5.0 (CLM5.0) simulations in order to illustrate the impacts of ST and SM in surface (0–10 cm) and root zone soil (0–100 cm) on GPP between 1979 and 2020. The results showed that the CLM5.0-based GPP and ST were in good agreement with in situ observations. ST, SM and GPP increased at the rates of 0.04 °C a ^−1 , 2.4 × 10 ^−4 mm ^3 mm ^−3 a ^−1 , and 5.36 g C m ^−2 a ^−2 , respectively. SM dominated the variations of GPP in winter (64.3%), while ST almost was the dominant factor in other periods, especially spring (99.9%) and autumn (94.7%). The explanatory power of ST and SM for GPP increased with elevation, especially for ST. The relative contributions of ST and SM to GPP at different time scales in root zone soil were similar to those in surface soil. This study provided a new understanding of how soil freeze-thaw affected GPP changes on the TP in the context of the intensification of warming and humidification.https://doi.org/10.1088/1748-9326/ad1d4fTibetan Plateausoil temperaturesoil moisturegross primary productivitysoil freeze-thaw |
| spellingShingle | Qing Peng Binghao Jia Xin Lai Longhuan Wang Qifeng Huang Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau Environmental Research Letters Tibetan Plateau soil temperature soil moisture gross primary productivity soil freeze-thaw |
| title | Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau |
| title_full | Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau |
| title_fullStr | Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau |
| title_full_unstemmed | Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau |
| title_short | Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau |
| title_sort | increasing gross primary productivity under soil warming and wetting on the tibetan plateau |
| topic | Tibetan Plateau soil temperature soil moisture gross primary productivity soil freeze-thaw |
| url | https://doi.org/10.1088/1748-9326/ad1d4f |
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