Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084749 |
Can We Detect Changes in Amazon Forest Structure Using Measurements of the Isotopic Composition of Precipitation? | |
Pattnayak, K. C.1,2; Tindall, J. C.2; Brienen, R. J. W.1; Barichivich, J.3,4; Gloor, E.1 | |
2019-12-30 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | England; Chile |
英文摘要 | Large-scale (>500 km) spatial gradients of precipitation oxygen isotope ratios (delta O-18(p)) hold information about the hydrological cycle. They result from the interplay between rainout and evapotranspiration along air-parcel paths, but these counteracting effects are difficult to disentangle, complicating quantification of the effect of land cover change on delta O-18(p). We show that disentangling can qualitatively be achieved using climate model simulations with a land-derived precipitation tracer for tropical South America. We then either vary land cover as observed since 1870 or replace Amazon forests with bare land to determine the resulting signals. Our results indicate that effects of historically changing land cover on annual mean delta O-18 isotope-ratio gradients are small and unlikely detectable, although there is a noticeable signal during the dry season. Furthermore, the effect of changes in water recycling on Amazon delta O-18(p) in paleo-records may have been overestimated and need reinterpretation. |
英文关键词 | precipitation oxygen isotope-ratios land derived precipitation tracer Ocean derived precipitation tracer Rayleigh distillation ocean-sourced precipitation recycled precipitation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000504761300001 |
WOS关键词 | STABLE WATER ISOTOPES ; CONTINENTAL MOISTURE ; SOUTH-AMERICA ; CLIMATE ; MODEL ; BASIN ; EVAPOTRANSPIRATION ; DEFORESTATION ; SIMULATIONS ; CIRCULATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225264 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Leeds, Sch Geog, Leeds, W Yorkshire, England; 2.Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England; 3.Univ Austral Chile, Inst Conservac Biodiversidad & Terr, Valdivia, Chile; 4.Ctr Climate & Resilience Res, Santiago, Chile |
推荐引用方式 GB/T 7714 | Pattnayak, K. C.,Tindall, J. C.,Brienen, R. J. W.,et al. Can We Detect Changes in Amazon Forest Structure Using Measurements of the Isotopic Composition of Precipitation?[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Pattnayak, K. C.,Tindall, J. C.,Brienen, R. J. W.,Barichivich, J.,&Gloor, E..(2019).Can We Detect Changes in Amazon Forest Structure Using Measurements of the Isotopic Composition of Precipitation?.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Pattnayak, K. C.,et al."Can We Detect Changes in Amazon Forest Structure Using Measurements of the Isotopic Composition of Precipitation?".GEOPHYSICAL RESEARCH LETTERS (2019). |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论