Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15154 |
Increasing the organic carbon stocks in mineral soils sequesters large amounts of phosphorus | |
Marie Spohn | |
2020-06-18 | |
发表期刊 | Global Change Biology
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出版年 | 2020 |
英文摘要 | Despite the fact that phosphorus (P) is critical for plant biomass production in many ecosystems, the implications of soil organic carbon (OC) sequestration for the P cycle have hardly been discussed yet. Thus, the aims of this study are, first, to synthesize results about the relationship between C and P in soil organic matter (SOM) and organic matter inputs to soils, second, to review processes that affect the C:P ratio of SOM, and third, to discuss implications of OC storage in terrestrial ecosystems for P sequestration. The study shows that the storage of OC in mineral soils leads to the sequestration of large amounts of organic phosphorus (OP) since SOM in mineral soils is very rich in P. The reasons for the strong enrichment of OP with respect to OC in soils are the mineralization of OC and the formation of microbial necromass that is P‐rich as well as the strong sorption of OP to mineral surfaces that prevents OP mineralization. In particular, the formation of mineral‐associated SOM that is favorable for storing OC in soil over decadal to centennial timescales sequesters large amounts of OP. Storage of 1,000 kg C in the clay size fraction in the topsoils of croplands sequesters 13.1 kg P. In contrast, the OC:OP ratios of wood and of peatlands are much larger than the ones in cropland soils. Thus, storage of C in wood in peatlands sequesters much less P than the storage of OC in mineral soils. In order to increase the C stocks in terrestrial ecosystems and to lock up as little P as possible, it would be more reasonable to protect and restore peatlands and to produce and preserve wood than to store OC in mineral soils. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/276588 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Marie Spohn. Increasing the organic carbon stocks in mineral soils sequesters large amounts of phosphorus[J]. Global Change Biology,2020. |
APA | Marie Spohn.(2020).Increasing the organic carbon stocks in mineral soils sequesters large amounts of phosphorus.Global Change Biology. |
MLA | Marie Spohn."Increasing the organic carbon stocks in mineral soils sequesters large amounts of phosphorus".Global Change Biology (2020). |
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