Mechanisms Underlying Aboveground and Belowground Litter Decomposition Converge over Time under Nutrient Deposition
文献类型：期刊论文
| 作者 | Jiang, Lei4; Li, Shenggong2,3; Wang, Huimin1,2; Dai, Xiaoqin1,2; Meng, Shengwang1,2; Fu, Xiaoli1,2; Zheng, Jiajia2,3; Yan, Han5; Ma, Ning2,3; Xue, Yafang2,3 |
| 刊名 | FORESTS
 |
| 出版日期 | 2023 |
| 卷号 | 14期号:1页码:15 |
| 关键词 | litter decomposition nitrogen and phosphorus deposition early- and late-stage AUR microbial enzymatic activity underlying mechanisms |
| DOI | 10.3390/f14010130 |
| 通讯作者 | Kou, Liang(koul@igsnrr.ac.cn) |
| 英文摘要 | Decomposition is vital for nutrient cycling and is sensitive to atmospheric nutrient depositions. However, the influences and underlying mechanisms of nutrient deposition on the long-term decomposition of leaves and absorptive roots remain unclear. Here, we explored the responses of leaves and absorptive roots to nutrient deposition (control, +N, +P, and +NP) in Pinus massoniana and Schima superba forests in subtropical China based on two stages (early-stage (1-year) and late-stage (3-year)) of a decomposition experiment. The chemical factions (acid-unhydrolysable residue (AUR), cellulose, and hemicellulose concentrations) and microbial enzymatic activities (hydrolase and oxidase) were also determined. The +N treatment had persistent negative effects on absorptive root decomposition, except for P. massoniana during the late stage. The +P treatment had a positive effect on leaf decomposition in all stages. The +NP treatment had a positive effect on leaf decomposition during the late stage. The increasing decomposition rates of foliar under +P treatment were more correlated with the increasing acid phosphatase activity than chemical factions, indicating a microbial mechanism. The decreasing decomposition rates of roots under +N treatment were weakly correlated with increasing AUR concentrations and strongly correlated with decreasing oxidase activity during the late stage, indicating both chemical and microbial mechanisms. Overall, our findings highlight that, despite contrasting responses to nutrient deposition, the mechanisms underlying aboveground and belowground decomposition tend to converge as decomposition progresses. |
| WOS关键词 | TERM NITROGEN DEPOSITION ; LEAF-LITTER ; MICROBIAL COMMUNITIES ; ROOT DECOMPOSITION ; ENZYME-ACTIVITIES ; FINE ROOTS ; TEMPERATE ; PHOSPHORUS ; RESPONSES ; RELEASE |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000915707800001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/189784]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Kou, Liang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Res Stn, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Natl Ecosyst Sci Data Ctr, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou 311300, Peoples R China 5.Free Univ Berlin, Inst Biol, Plant Ecol, D-14195 Berlin, Germany |
| 推荐引用方式 GB/T 7714 | Jiang, Lei,Li, Shenggong,Wang, Huimin,et al. Mechanisms Underlying Aboveground and Belowground Litter Decomposition Converge over Time under Nutrient Deposition[J]. FORESTS,2023,14(1):15. |
| APA | Jiang, Lei.,Li, Shenggong.,Wang, Huimin.,Dai, Xiaoqin.,Meng, Shengwang.,...&Kou, Liang.(2023).Mechanisms Underlying Aboveground and Belowground Litter Decomposition Converge over Time under Nutrient Deposition.FORESTS,14(1),15. |
| MLA | Jiang, Lei,et al."Mechanisms Underlying Aboveground and Belowground Litter Decomposition Converge over Time under Nutrient Deposition".FORESTS 14.1(2023):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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