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| DOI | 10.1016/j.geoderma.2024.116807 |
| Rapid loss of organic carbon and soil structure in mountainous grassland topsoils induced by simulated climate change | |
| 发表日期 | 2024 |
| ISSN | 0016-7061 |
| EISSN | 1872-6259 |
| 起始页码 | 442 |
| 卷号 | 442 |
| 英文摘要 | Mountainous grassland soils are considered one of the most unique biological hotspots, rich in organic carbon (OC). At the same time, they are exposed to great threats, as climate warming is more pronounced in mountainous regions than in lowland areas. In this study, we assessed the effect of simulated warming (+1K, +2K, and + 3 K) on OC stocks and soil structure in grassland soils of the Northern Limestone Alps in Germany by translocating plant-soil mesocosms from high- (1260 m a.s.l., Rendzic Phaeozem) and mid- (860 m a. s. l., Haplic Cambisol) to low-elevation (600 m a.s.l). Plant-soil mesocosms were exposed to both extensive and intensive grassland management practices. Four years after translocation, we observed a rapid decrease of topsoil SOC stocks under intensive (-1.0 t C ha yr-1) and extensive management (-2.2 t C ha yr-1), under the highest temperature increase. Intensive management with about 1 t C ha-1 yr-1 higher manure C return than extensive management (1.6 vs. 0.8 t C ha-1 yr-1 intensive and extensive, respectively) may explain the difference in SOC losses between different management treatments. Under both management practices, the loss of SOC was mainly associated with a decrease of large macroaggregates, at both management practices. In addition, different aggregate specific OC loss rates resulted in an altered distribution of OC among the aggregate size classes. Our study provides evidence that simulated climate change induced a rapid and substantial decline of SOC in mountainous, OC-rich grassland soils, which may be attributed to decreased physical OC protection within large macroaggregates. Optimized grassland management in form of increased application of organic fertilizers could only partially offset the SOC loss by improved formation of small macroaggregates. |
| 英文关键词 | Plant-soil mesocosms; Soil aggregates; Grassland management; Mountainous soils |
| 语种 | 英语 |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| WOS记录号 | WOS:001180033000001 |
| 来源期刊 | GEODERMA
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/290182 |
| 作者单位 | Technical University of Munich; Swedish University of Agricultural Sciences; University Hohenheim; University of Bayreuth; Helmholtz Association; Helmholtz-Center Munich - German Research Center for Environmental Health; Helmholtz Association; Karlsruhe Institute of Technology; Technical University of Munich |
| 推荐引用方式 GB/T 7714 | . Rapid loss of organic carbon and soil structure in mountainous grassland topsoils induced by simulated climate change[J],2024,442. |
| APA | (2024).Rapid loss of organic carbon and soil structure in mountainous grassland topsoils induced by simulated climate change.GEODERMA,442. |
| MLA | "Rapid loss of organic carbon and soil structure in mountainous grassland topsoils induced by simulated climate change".GEODERMA 442(2024). |
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