气候变化领域集成服务门户(CCPortal): Landscape evolution and nutrient rejuvenation reflected in Amazon forest canopy chemistry

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DOI	10.1111/ele.12963
	Landscape evolution and nutrient rejuvenation reflected in Amazon forest canopy chemistry
	Chadwick K.D.; Asner G.P.
发表日期	2018
ISSN	1461023X
卷号	21 期号:7
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
英文关键词	Amazon; calcium; Carnegie Airborne Observatory; landscape ecology; rock-derived nutrients; tropical forests
语种	英语
scopus关键词	ecosystem; forest; soil; tree; tropic climate; Ecosystem; Forests; Nutrients; Soil; Trees; Tropical Climate
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121298
作者单位	Department of Global Ecology, Carnegie Institution for Science, 260 Panama St., Stanford, CA 94305, United States; Department of Earth System Science, Stanford University, 473 Via Ortega, Stanford, CA 94305, United States
推荐引用方式 GB/T 7714	Chadwick K.D.,Asner G.P.. Landscape evolution and nutrient rejuvenation reflected in Amazon forest canopy chemistry[J],2018,21(7).
APA	Chadwick K.D.,&Asner G.P..(2018).Landscape evolution and nutrient rejuvenation reflected in Amazon forest canopy chemistry.Ecology Letters,21(7).
MLA	Chadwick K.D.,et al."Landscape evolution and nutrient rejuvenation reflected in Amazon forest canopy chemistry".Ecology Letters 21.7(2018).