Modeling the effect of grazing on carbon and water use efficiencies in grasslands on the Qinghai–Tibet Plateau
Abstract Background Carbon and water use efficiencies (CUE and WUE, respectively) are vital indicators of the adaptability of plants to environmental conditions. However, the effects of grazing and climate change on the spatiotemporal changes in CUE and WUE in Qinghai–Tibet Plateau grasslands (QTPG)...
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| Format: | Article |
| Language: | English |
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BMC
2024-02-01
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| Series: | BMC Ecology and Evolution |
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| Online Access: | https://doi.org/10.1186/s12862-024-02215-4 |
| _version_ | 1827328797532225536 |
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| author | Xiaotao Huang Geping Luo Zhen Ma Buqing Yao Yangong Du Yongsheng Yang |
| author_facet | Xiaotao Huang Geping Luo Zhen Ma Buqing Yao Yangong Du Yongsheng Yang |
| author_sort | Xiaotao Huang |
| collection | DOAJ |
| description | Abstract Background Carbon and water use efficiencies (CUE and WUE, respectively) are vital indicators of the adaptability of plants to environmental conditions. However, the effects of grazing and climate change on the spatiotemporal changes in CUE and WUE in Qinghai–Tibet Plateau grasslands (QTPG) are still unclear. Results Using the enhanced Biome-BGCMuSo model in combination with observed data, we estimated and analyzed the spatiotemporal variations in CUE and WUE and their responses to grazing in QTPG from 1979 to 2018. The mean annual CUE was 0.7066 in QTPG from 1979 to 2018 under the actual climate scenario. In general, the grassland CUE was low in the southeast and high in the northwest. Grazing generally decreased CUE in QTPG from 1979 to 2018, and there was an increasing trend in the difference in CUE between the grazing and nongrazing scenarios. The difference in CUE was generally greater in the northwest than in the southeast. The mean annual WUE was 0.5591 g C/kg H2O in QTPG from 1979 to 2018 under the actual climate scenario. After 2000, the grassland WUE exhibited a fluctuating upward trend. In general, the grassland WUE was greater in the southeast than in the northwest. Grazing generally decreased WUE in QTPG from 1979 to 2018, and there was an increasing trend in the difference in WUE between the grazing and nongrazing scenarios. The difference in WUE was generally greater in the northwest than in the southeast. Conclusions The findings of this study suggested that the spatiotemporal changes in CUE and WUE in QTPG were closely related to changes in the natural environment and grazing management. |
| first_indexed | 2024-03-07T15:23:30Z |
| format | Article |
| id | doaj.art-0b7cc78221dc420fa55c8982a3927f23 |
| institution | Directory Open Access Journal |
| issn | 2730-7182 |
| language | English |
| last_indexed | 2024-03-07T15:23:30Z |
| publishDate | 2024-02-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Ecology and Evolution |
| spelling | doaj.art-0b7cc78221dc420fa55c8982a3927f232024-03-05T17:25:57ZengBMCBMC Ecology and Evolution2730-71822024-02-0124111110.1186/s12862-024-02215-4Modeling the effect of grazing on carbon and water use efficiencies in grasslands on the Qinghai–Tibet PlateauXiaotao Huang0Geping Luo1Zhen Ma2Buqing Yao3Yangong Du4Yongsheng Yang5School of Geographical Sciences and Tourism, Zhaotong UniversityState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of SciencesKey Laboratory of Restoration Ecology for Cold Regions Laboratory in Qinghai, Northwest Institute of Plateau Biology, Chinese Academy of SciencesKey Laboratory of Restoration Ecology for Cold Regions Laboratory in Qinghai, Northwest Institute of Plateau Biology, Chinese Academy of SciencesKey Laboratory of Restoration Ecology for Cold Regions Laboratory in Qinghai, Northwest Institute of Plateau Biology, Chinese Academy of SciencesKey Laboratory of Restoration Ecology for Cold Regions Laboratory in Qinghai, Northwest Institute of Plateau Biology, Chinese Academy of SciencesAbstract Background Carbon and water use efficiencies (CUE and WUE, respectively) are vital indicators of the adaptability of plants to environmental conditions. However, the effects of grazing and climate change on the spatiotemporal changes in CUE and WUE in Qinghai–Tibet Plateau grasslands (QTPG) are still unclear. Results Using the enhanced Biome-BGCMuSo model in combination with observed data, we estimated and analyzed the spatiotemporal variations in CUE and WUE and their responses to grazing in QTPG from 1979 to 2018. The mean annual CUE was 0.7066 in QTPG from 1979 to 2018 under the actual climate scenario. In general, the grassland CUE was low in the southeast and high in the northwest. Grazing generally decreased CUE in QTPG from 1979 to 2018, and there was an increasing trend in the difference in CUE between the grazing and nongrazing scenarios. The difference in CUE was generally greater in the northwest than in the southeast. The mean annual WUE was 0.5591 g C/kg H2O in QTPG from 1979 to 2018 under the actual climate scenario. After 2000, the grassland WUE exhibited a fluctuating upward trend. In general, the grassland WUE was greater in the southeast than in the northwest. Grazing generally decreased WUE in QTPG from 1979 to 2018, and there was an increasing trend in the difference in WUE between the grazing and nongrazing scenarios. The difference in WUE was generally greater in the northwest than in the southeast. Conclusions The findings of this study suggested that the spatiotemporal changes in CUE and WUE in QTPG were closely related to changes in the natural environment and grazing management.https://doi.org/10.1186/s12862-024-02215-4CUEWUESpatiotemporal dynamicsGrazingModelQinghai–Tibet Plateau |
| spellingShingle | Xiaotao Huang Geping Luo Zhen Ma Buqing Yao Yangong Du Yongsheng Yang Modeling the effect of grazing on carbon and water use efficiencies in grasslands on the Qinghai–Tibet Plateau BMC Ecology and Evolution CUE WUE Spatiotemporal dynamics Grazing Model Qinghai–Tibet Plateau |
| title | Modeling the effect of grazing on carbon and water use efficiencies in grasslands on the Qinghai–Tibet Plateau |
| title_full | Modeling the effect of grazing on carbon and water use efficiencies in grasslands on the Qinghai–Tibet Plateau |
| title_fullStr | Modeling the effect of grazing on carbon and water use efficiencies in grasslands on the Qinghai–Tibet Plateau |
| title_full_unstemmed | Modeling the effect of grazing on carbon and water use efficiencies in grasslands on the Qinghai–Tibet Plateau |
| title_short | Modeling the effect of grazing on carbon and water use efficiencies in grasslands on the Qinghai–Tibet Plateau |
| title_sort | modeling the effect of grazing on carbon and water use efficiencies in grasslands on the qinghai tibet plateau |
| topic | CUE WUE Spatiotemporal dynamics Grazing Model Qinghai–Tibet Plateau |
| url | https://doi.org/10.1186/s12862-024-02215-4 |
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