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| DOI | 10.1007/s10533-020-00704-4 |
| Some thoughts on the biogeochemical cycling of potassium in terrestrial ecosystems | |
| Schlesinger W.H. | |
| 发表日期 | 2020 |
| ISSN | 0168-2563 |
| 英文摘要 | Potassium presents a conundrum for biogeochemists. Potassium is cycled wastefully at the plant level, but it appears to be conserved in the nutrient budgets of entire ecosystems, where it sometimes limits net primary productivity. An increasing demand for K fertilizer may accompany the expansion of agriculture into highly weathered tropical soils, where limited supplies of K may control the distribution and productivity of natural vegetation. However, the molar ratios of 4.6 for N/K in herbaceous plants, 17.3 in current global fertilizer applications, and 0.33 in the commodity price of fertilizer suggest that N is vastly overused and K is vastly over-priced in modern agriculture. © 2020, Springer Nature Switzerland AG. |
| 英文关键词 | Agriculture; Biogeochemistry; Potassium limitation; Stoichiometry; Weathering |
| 语种 | 英语 |
| 来源期刊 | Biogeochemistry
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/153170 |
| 作者单位 | Cary Institute of Ecosystem Studies, Millbrook, NY 12545, United States |
| 推荐引用方式 GB/T 7714 | Schlesinger W.H.. Some thoughts on the biogeochemical cycling of potassium in terrestrial ecosystems[J],2020. |
| APA | Schlesinger W.H..(2020).Some thoughts on the biogeochemical cycling of potassium in terrestrial ecosystems.Biogeochemistry. |
| MLA | Schlesinger W.H.."Some thoughts on the biogeochemical cycling of potassium in terrestrial ecosystems".Biogeochemistry (2020). |
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