GSTDTAP  > 气候变化
DOI10.1088/1748-9326/aa7ee4
Effects of long-term rainfall decline on the structure and functioning of Hawaiian forests
Barbosa, Jomar M.; Asner, Gregory P.
2017-09-01
发表期刊ENVIRONMENTAL RESEARCH LETTERS
ISSN1748-9326
出版年2017
卷号12期号:9
文章类型Article
语种英语
国家USA
英文摘要

Climate change is altering the dynamics of terrestrial vegetation, with consequences for the functioning of Earth's biomes and the provisioning of ecosystem services. Changes in forest dynamics due to drought events or short-term drying trends have been described at different ecological scales, but few observational studies have determined the relative effects of short-and long-term precipitation trends (e.g. decade and century, respectively) on forest canopy structure and functioning. Using gridded annual precipitation maps from 1920 to 2012, and temporal data from airborne light detection and ranging (LiDAR) and MODIS Enhanced Vegetation Index (EVI), we present evidence for a large-scale decline in forest canopy volume (area vs. height) and greenness (a metric of photosynthetic function) driven by a long-term drying trend on Hawaii island. Decreases in canopy greenness were observed in step with shorter-term (10 y) precipitation declines, but decreases in greenness were two-fold greater where longer-term (similar to 100 y) precipitation declines had occurred. Canopy volume mainly reduced where long-term precipitation declines occurred. We conclude that long-term precipitation trends critically impact forest canopy structure and functioning, which likely has cascading consequences for numerous ecological processes such as subcanopy light availability, species interactions, carbon storage, and animal habitat.


英文关键词climate change Carnegie Airborne Observatory EVI LiDAR photosynthetic activity rainfall anomaly vegetation structure
领域气候变化
收录类别SCI-E
WOS记录号WOS:000408261600002
WOS关键词CLIMATE-CHANGE ; DROUGHT ; AMAZON ; RESPONSES ; PLANT ; SENSITIVITY ; DYNAMICS
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
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/14969
专题气候变化
作者单位Carnegie Inst Sci, Dept Global Ecol, Stanford, CA 94305 USA
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Barbosa, Jomar M.,Asner, Gregory P.. Effects of long-term rainfall decline on the structure and functioning of Hawaiian forests[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(9).
APA Barbosa, Jomar M.,&Asner, Gregory P..(2017).Effects of long-term rainfall decline on the structure and functioning of Hawaiian forests.ENVIRONMENTAL RESEARCH LETTERS,12(9).
MLA Barbosa, Jomar M.,et al."Effects of long-term rainfall decline on the structure and functioning of Hawaiian forests".ENVIRONMENTAL RESEARCH LETTERS 12.9(2017).
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