Nitrogen deposition increases xylem hydraulic sensitivity but decreases stomatal sensitivity to water potential in two temperate deciduous tree species
文献类型：期刊论文
| 作者 | Fan, Da-Yong; Dang, Qing-Lai; Yang, Xiao-Fang; Liu, Xiao-Ming; Wang, Jia-Yi; Zhang, Shou-Ren |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022 |
| 卷号 | 848 |
| ISSN号 | 0048-9697 |
| 关键词 | Temperate forest Nitrogen deposition Water relations Stomatal responses Xylem embolism |
| DOI | 10.1016/j.scitotenv.2022.157840 |
| 文献子类 | Article |
| 英文摘要 | Although the effects of nitrogen deposition on tree water relations are studied extensively, its impact on the relative sensitivities of stomatal and xylem hydraulic conductance to vapor pressure deficit and water potential is still poorly understood. This study investigated the effects of a 7-year N deposition treatment on the responses of leaf water relations and sensitivity of canopy stomatal conductance to vapor pressure deficit (VPD) and water potential, as well as the sensitivity of branch hydraulic conductance to water potential in a dominant tree species (Quercus wutaishanica) andan associated tree species (Acer mono) in a temperate forest. It was found that the N deposition increased stomatal sensitivity to VPD, decreased stomatal sensitivity to water potential, and increased the vulnerability of the hydraulic system to cavitation in both species. The standardized stomatal sensitivity to VPD, however, was not affected by the N deposition, indicating that the stomata maintained the ability to regulate the water balance under nitrogen deposition condition. Although the increased stomatal sensitivity to VPD could compensate the decreased stomatal sensitivity to water potential to some extent, the combined response would increase the percentage loss of hydraulic conductivity (PLC) when 50 % loss in stomatal conductance occurred, particularly in the dominant species Q. wutaishanica. The result indicates that N deposition would increase the risk of hydraulic failure in those species if the soil and/or air becomes drier under future climate change scenarios. The results of the study can have significant implications on the modelling of ecosystem vulnerability to drought under the scenario of atmospheric nitrogen deposition. |
| 学科主题 | Environmental Sciences |
| 电子版国际标准刊号 | 1879-1026 |
| 出版地 | AMSTERDAM |
| WOS关键词 | VAPOR-PRESSURE DEFICIT ; GLOBAL RESPONSE PATTERNS ; SAP-FLOW ; GAS-EXCHANGE ; ELEVATED CO2 ; FUNCTIONAL TRAITS ; USE EFFICIENCY ; CONDUCTANCE ; FOREST ; DROUGHT |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000888830900010 |
| 资助机构 | National Key Research and Development Program of China [2016YFA0600802] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/29059]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.[Fan, Da-Yong 2.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100096, Peoples R China 3.Liu, Xiao-Ming 4.[Yang, Xiao-Fang 5.Lakehead Univ, Fac Nat Resources Management, Thunder Bay, ON, Canada 6.Beijing Forestry Univ, Key Lab Silviculture & Conservat, Minist Educ, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Da-Yong,Dang, Qing-Lai,Yang, Xiao-Fang,et al. Nitrogen deposition increases xylem hydraulic sensitivity but decreases stomatal sensitivity to water potential in two temperate deciduous tree species[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,848. |
| APA | Fan, Da-Yong,Dang, Qing-Lai,Yang, Xiao-Fang,Liu, Xiao-Ming,Wang, Jia-Yi,&Zhang, Shou-Ren.(2022).Nitrogen deposition increases xylem hydraulic sensitivity but decreases stomatal sensitivity to water potential in two temperate deciduous tree species.SCIENCE OF THE TOTAL ENVIRONMENT,848. |
| MLA | Fan, Da-Yong,et al."Nitrogen deposition increases xylem hydraulic sensitivity but decreases stomatal sensitivity to water potential in two temperate deciduous tree species".SCIENCE OF THE TOTAL ENVIRONMENT 848(2022). |
入库方式： OAI收割
来源：植物研究所
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