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| DOI | 10.1088/1748-9326/ad1d4f |
| Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau | |
| 发表日期 | 2024 |
| ISSN | 1748-9326 |
| 起始页码 | 19 |
| 结束页码 | 2 |
| 卷号 | 19期号:2 |
| 英文摘要 | 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 CO2 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 degrees C a-1, 2.4 x 10-4mm3 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. |
| 英文关键词 | Tibetan Plateau; soil temperature; soil moisture; gross primary productivity; soil freeze-thaw |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001148725000001 |
| 来源期刊 | ENVIRONMENTAL RESEARCH LETTERS
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/303347 |
| 作者单位 | Chengdu University of Information Technology; Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS |
| 推荐引用方式 GB/T 7714 | . Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau[J],2024,19(2). |
| APA | (2024).Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau.ENVIRONMENTAL RESEARCH LETTERS,19(2). |
| MLA | "Increasing gross primary productivity under soil warming and wetting on the Tibetan Plateau".ENVIRONMENTAL RESEARCH LETTERS 19.2(2024). |
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