DOI: 10.1111/ele.12963
Scopus记录号: 2-s2.0-85045415910
论文题名: Landscape evolution and nutrient rejuvenation reflected in Amazon forest canopy chemistry
作者: Chadwick K.D. ; Asner G.P.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期: 7 起始页码: 978
结束页码: 988
语种: 英语
英文关键词: Amazon
; calcium
; Carnegie Airborne Observatory
; landscape ecology
; rock-derived nutrients
; tropical forests
英文摘要: Terra firme forests make up more than three quarters of the western Amazon basin and are often considered functionally homogeneous in regional scale mapping and modelling efforts. However, the landforms underlying these systems are subject to dynamic processes of landscape evolution occurring within an otherwise geomorphically stable terrace formation. These processes may introduce systematic variability in local nutrient status of terra firme ecosystems. We utilised high-resolution airborne topographic and imaging spectroscopy data, with directed field soil surveys, to reveal that active stream incision and patterns of soil rock derived nutrient availability drive foliar canopy chemistry distributions across seven catchments within a single terrace formation. These results strongly suggest that fine-scale geomorphic processes directly affect biogeochemical cycles throughout the lowland western Amazon. Furthermore, links between landscape evolution and foliar chemical distributions indicate that geomorphic processes drive the fine-scale spatial organisation of this tropical ecosystem, with implications for the functional assembly and biogeography of Amazonian forests. © 2018 John Wiley & Sons Ltd/CNRS Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107431
Appears in Collections: 气候减缓与适应
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作者单位: Department of Global Ecology, Carnegie Institution for Science, 260 Panama St., Stanford, CA, United States; Department of Earth System Science, Stanford University, 473 Via Ortega, Stanford, CA, United States
Recommended Citation:
Chadwick K.D.,Asner G.P.. Landscape evolution and nutrient rejuvenation reflected in Amazon forest canopy chemistry[J]. Ecology Letters,2018-01-01,21(7)