Decadal isotopic and functional trait evidence reveals water and nitrogen constrains on productivity of three subtropical conifers
文献类型：期刊论文
| 作者 | Wang, Jing1,2; Wen, Xuefa1,2 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 362页码:110375 |
| 关键词 | Plant productivity Stomatal conductance Intrinsic water use efficiency Mycorrhizal dependence Stable isotope |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2024.110375 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Increasing evidence indicates that plant productivity is constrained by water and nutrient availability under natural conditions of the stimulatory effects of elevated CO2 concentration (eCO2). However, it remains unclear how plant traits related to water and nitrogen acquisition and utilization acclimate to the soil water and nitrogen limitations on productivity. To address this, we investigated isotopic and functional traits and net primary productivity (NPP) of three dominant species of Pinus elliottii, Cunninghamia lanceolata, and Pinus massoniana in a subtropical coniferous plantation from 2011 to 2022 along with environmental parameters. Faced with increasing soil water and nitrogen stress, stomatal conductance (gs, 1/leaf delta 18 O enrichment) decreased with eCO2 in all species. Stomatal closure enhanced intrinsic water use efficiency (iWUE, derived from leaf delta 13 C using photosynthetic discrimination model) in P. elliottii and P. massoniana but not in C. lanceolata. Although eCO2 compensate for productivity losses resulting from drought-induced decreases in gs, increased NPP was observed only in P. elliottii, reflecting differences in the species' abilities to acclimate and overcome resource limitations. All species showed increased mycorrhizal dependency (the difference in delta 15 N between leaves and soil, |triangle 15N|), high leaf nitrogen content, but reduced nitrogen use efficiency, leaf water content and specific leaf area. This suggested that plants increased nitrogen investment through biological adaption to mitigate productivity limitations caused by water and nutrient stress. The increased NPP in P. elliottii was due to high nitrogen uptake and low leaf nitrogen demand, compensating for water limitations. Conversely, reductions in NPP in C. lanceolata and P. massoniana were attributed to the relatively low nitrogen uptake and high leaf nitrogen demand, which failed to offset water limitations. This implies that the magnitude and direction of vegetation productivity responses to eCO2 are determined by species-specific differences in plant adaptations to water and nutrient limitations. |
| URL标识 | 查看原文 |
| WOS关键词 | STOMATAL CONDUCTANCE ; CO2 FERTILIZATION ; CARBON-DIOXIDE ; LEAF ; PHOTOSYNTHESIS ; DROUGHT ; FOREST ; PLANTS ; DISCRIMINATION ; ECOSYSTEMS |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001397746300001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/211311]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Wen, Xuefa |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang, Jing,Wen, Xuefa. Decadal isotopic and functional trait evidence reveals water and nitrogen constrains on productivity of three subtropical conifers[J]. AGRICULTURAL AND FOREST METEOROLOGY,2025,362:110375. |
| APA | Wang, Jing,&Wen, Xuefa.(2025).Decadal isotopic and functional trait evidence reveals water and nitrogen constrains on productivity of three subtropical conifers.AGRICULTURAL AND FOREST METEOROLOGY,362,110375. |
| MLA | Wang, Jing,et al."Decadal isotopic and functional trait evidence reveals water and nitrogen constrains on productivity of three subtropical conifers".AGRICULTURAL AND FOREST METEOROLOGY 362(2025):110375. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。