globalchange  > 影响、适应和脆弱性
DOI: 10.1088/1748-9326/aa5b3a
论文题名:
Detecting spatiotemporal changes of peak foliage coloration in deciduous and mixedforests across the Central and Eastern United States
作者: Lingling Liu; Xiaoyang Zhang; Yunyue Yu; Alison Donnelly
刊名: Environmental Research Letters
ISSN: 1748-9326
出版年: 2017
发表日期: 2017-02-09
卷: 12, 期:2
语种: 英语
英文摘要:

The timing of fall foliage coloration, especially peak coloration, is of great importance to the climate change research community as it has implications for carbon storage in forests. However, its long-term variation and response to climate change are poorly understood. To address this issue, we examined the long-term trends and breakpoints in satellite derived peak coloration onset from 1982 to 2014 using an innovative approach that combines Singular Spectrum Analysis (SSA) with Breaks for Additive Seasonal and Trend (BFAST). The peak coloration trend was then evaluated using both field foliage coloration observations and flux tower measurements. Finally, interannual changes in peak coloration onset were correlated with temperature and precipitation variation. Results showed that temporal trends in satellite-derived peak coloration onset were comparable with both field observations and flux tower measurements of gross primary productivity. Specifically, a breakpoint in long-term peak coloration onset was detected in 25% of pixels which were mainly distributed at latitudes north of 37°N. The breakpoint tended to occur between 1998 and 2004. Peak coloration onset was delayed before the breakpoint while it was transformed to an early trend after the breakpoint in nearly all pixels. The remaining 75% of pixels exhibited monotonic trends, 35% of which revealed a late trend and 40% an early trend. The results indicate that the onset of peak coloration experienced a late trend during the 1980s and 1990s in most deciduous and mixed forests. However, the trend was reversed during the most recent decade when the timing of peak coloration became earlier. The onset of peak coloration was significantly correlated with late summer and autumn temperature in 55.5% of pixels from 1982 to 2014. This pattern of temperature impacts was also verified using field observations and flux tower measurements. In the remaining 44.5% of pixels, 12.2% of pixels showed significantly positive correlation between the onset of peak coloration and cumulative precipitation during late summer and autumn period from 1982 to 2014. Our findings can improve understanding of the impact of changes in autumn phenology on carbon uptake in forests, which in turn facilitate more reliable measures of carbon dynamics in vegetation–climate interactions models.

URL: http://iopscience.iop.org/article/10.1088/1748-9326/aa5b3a
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13567
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Liu_2017_Environ._Res._Lett._12_024013.pdf(3266KB)期刊论文作者接受稿开放获取View Download

作者单位: Geospatial Sciences Center of Excellence (GSCE), South Dakota State University, 1021 Medary Ave, Brookings, SD 57007, United States of America;Author to whom any correspondence should be addressed.;Geospatial Sciences Center of Excellence (GSCE), South Dakota State University, 1021 Medary Ave, Brookings, SD 57007, United States of America;Department of Geography, South Dakota State University, Brookings, SD 57007, United States of America;Author to whom any correspondence should be addressed.;NOAA/NESDIS/STAR, 5200 Auth Rd, Camp Springs, MD 20746, United States of America;Department of Geography, University of Wisconsin-Milwaukee, Milwaukee, WI 53201-0413, United States of America

Recommended Citation:
Lingling Liu,Xiaoyang Zhang,Yunyue Yu,et al. Detecting spatiotemporal changes of peak foliage coloration in deciduous and mixedforests across the Central and Eastern United States[J]. Environmental Research Letters,2017-01-01,12(2)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Lingling Liu]'s Articles
[Xiaoyang Zhang]'s Articles
[Yunyue Yu]'s Articles
百度学术
Similar articles in Baidu Scholar
[Lingling Liu]'s Articles
[Xiaoyang Zhang]'s Articles
[Yunyue Yu]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Lingling Liu]‘s Articles
[Xiaoyang Zhang]‘s Articles
[Yunyue Yu]‘s Articles
Related Copyright Policies
Null
收藏/分享
文件名: Liu_2017_Environ._Res._Lett._12_024013.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.