Decoupling of nitrogen, phosphorus, and carbon release from fine and coarse roots during 7 years of decomposition
文献类型：期刊论文
| 作者 | Pan, Jun5; See, Craig R.; Wang, Rui7; Luan, Junwei4; Wang, Jing1; Liu, Fan2; Quan, Xiankui5; Chen, Hongyang5; Wang, Xingchang5; Wang, Chuankuan5 |
| 刊名 | JOURNAL OF ECOLOGY
 |
| 出版日期 | 2023-12-14 |
| 卷号 | N/A |
| 关键词 | litter quality nitrogen nutrient immobilization nutrient release phosphorus root decomposition root diameter |
| DOI | 10.1111/1365-2745.14238 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | 1. Below-ground litter decomposition represents an important source of the limiting nutrients nitrogen (N) and phosphorus (P) to forest soils, but roots also immobilize these nutrients during the decomposition process.2. Despite clear implications for soil fertility, the rates and drivers of nutrient immobilization and release (as the percent of increase and decrease of the initial pool) from root litter remain poorly understood, especially in coarse roots (>2 mm diameter).3. To address this gap, we conducted a 7-year field decomposition experiment using roots from three species, across five diameter classes (<1, 1-2, 2-5, 5-10 and 10-20 mm) in a temperate forest.4. Nitrogen dynamics were largely decoupled with P and carbon (C) over the course of the experiment, and both varied by species and root diameter. Roots released P to the surrounding soil within the first year of decomposition. In contrast, roots immobilized N for much longer, with the coarsest roots remaining a net N sink after 7 years. Long-term N release was jointly controlled by initial nutrient and C quality, whereas P release and decomposition rate were better predicted by initial C quality. Initial root nutrients well predicted the difference between long-term N versus P release.5. Synthesis. Our results highlight the fact that N and P dynamics should be considered separately when modelling nutrient release during root decomposition, and suggest that the functional diversity of below-ground biomass may have considerable afterlife effects on the relative availability of N and P in soil. We conclude that root litter, especially coarse root litter, represents an underappreciated N sink in forest soils. |
| WOS关键词 | LITTER DECOMPOSITION ; DIFFERENT DIAMETERS ; CONIFEROUS FORESTS ; SUBSTRATE QUALITY ; PACIFIC-NORTHWEST ; NUTRIENT RELEASE ; GLOBAL PATTERNS ; LEAF-LITTER ; TEMPERATE ; RATES |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:001124833100001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200921]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Int Ctr Bamboo & Rattan, Key Lab Natl Forestry & Grassland Adm, Beijing Bamboo & Rattan Sci & Technol, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Key Lab Agr Water Resources, Shijiazhuang, Peoples R China 4.Weifang Univ, Key Lab Biochem & Mol Biol Univ Shandong Prov, Weifang, Peoples R China 5.Northeast Forestry Univ, Ctr Ecol Res, Harbin, Peoples R China 6.Northeast Forestry Univ, Key Lab Sustainable Forest Ecosyst Management, Minist Educ, Harbin, Peoples R China 7.See, Craig R.] No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ USA |
| 推荐引用方式 GB/T 7714 | Pan, Jun,See, Craig R.,Wang, Rui,et al. Decoupling of nitrogen, phosphorus, and carbon release from fine and coarse roots during 7 years of decomposition[J]. JOURNAL OF ECOLOGY,2023,N/A. |
| APA | Pan, Jun.,See, Craig R..,Wang, Rui.,Luan, Junwei.,Wang, Jing.,...&Wang, Chuankuan.(2023).Decoupling of nitrogen, phosphorus, and carbon release from fine and coarse roots during 7 years of decomposition.JOURNAL OF ECOLOGY,N/A. |
| MLA | Pan, Jun,et al."Decoupling of nitrogen, phosphorus, and carbon release from fine and coarse roots during 7 years of decomposition".JOURNAL OF ECOLOGY N/A(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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