Seasonal soil respiration responses to fencing vary by alpine grassland type in the Tibetan Plateau
文献类型：期刊论文
| 作者 | Chen, Luyun2,5; Shaw, Jeremy R.3; Zeng, Xiaoyang1; Du, Chenjun4; Gao, Yongheng2 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2025-10-01 |
| 卷号 | 462页码:117517 |
| 关键词 | Soil respiration Fencing Alpine grassland Tibetan Plateau Non-growing season |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2025.117517 |
| 产权排序 | 5 |
| 文献子类 | Article |
| 英文摘要 | Fencing is widely applied for grassland restoration on the Qinghai-Tibet Plateau. However, considerable uncertainty remains in how soil respiration (Rs) and its components, autotrophic (Ra) and heterotrophic (Rh) respiration, respond to fencing in different alpine grassland types. This research investigated the impact of fencing on Rs, Rh, and Ra during growing and non-growing seasons in alpine steppe and alpine meadow, and elucidated the underlying biotic and abiotic mechanisms by assessing plant biomass and community data (e.g., species richness, abundance), soil properties and microbial community composition and diversity. Results revealed divergent responses of Rs, Rh, and Ra to fencing between alpine meadow and steppe ecosystems. In the more mesic alpine meadow, fencing significantly enhanced Rh by 19.3% during the growing season, while Rs and Ra remained largely unchanged. The increased growing season Rh rate in alpine meadow was primarily driven by nitrate nitrogen concentrations. In contrast, fencing exerted more pronounced effects in the relatively xeric alpine steppe, where growing season Rs, Rh, and Ra increased by 93.3%, 66.8%, and 234.3%, respectively. During the non-growing season, Rs and Rh also rose by 50.2% and 55.0%. In the steppe, the elevation of Rh across both seasons was strongly related to substrate availability and microbial community composition, whereas the increase in Ra during the growing season was mainly attributed to enhanced plant biomass. Our study highlights the importance of considering grassland type and seasonal dynamics when assessing fencing effects on soil carbon processes, providing insights into mechanisms regulating soil respiration in alpine ecosystems. |
| URL标识 | 查看原文 |
| WOS关键词 | DISSOLVED ORGANIC-CARBON ; BELOW-GROUND BIOMASS ; TEMPERATURE SENSITIVITY ; GRAZING EXCLUSION ; GROWING-SEASON ; MICROBIAL RESPIRATION ; ECOSYSTEM RESPIRATION ; EXTRACTION METHOD ; CO2 FLUX ; NITROGEN |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001577972500002 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217459]  |
| 专题 | 拉萨站高原生态系统研究中心_外文论文 |
| 通讯作者 | Gao, Yongheng |
| 作者单位 | 1.Sichuan Coll Architectural Technol, Chengdu 610399, Peoples R China; 2.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China; 3.Colorado State Univ, Dept Forest & Rangeland Stewardship, Ft Collins, CO 80523 USA; 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 5.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Chen, Luyun,Shaw, Jeremy R.,Zeng, Xiaoyang,et al. Seasonal soil respiration responses to fencing vary by alpine grassland type in the Tibetan Plateau[J]. GEODERMA,2025,462:117517. |
| APA | Chen, Luyun,Shaw, Jeremy R.,Zeng, Xiaoyang,Du, Chenjun,&Gao, Yongheng.(2025).Seasonal soil respiration responses to fencing vary by alpine grassland type in the Tibetan Plateau.GEODERMA,462,117517. |
| MLA | Chen, Luyun,et al."Seasonal soil respiration responses to fencing vary by alpine grassland type in the Tibetan Plateau".GEODERMA 462(2025):117517. |
入库方式： OAI收割
来源：地理科学与资源研究所
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