Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aa5b3a |
Detecting spatiotemporal changes of peak foliage coloration in deciduous and mixedforests across the Central and Eastern United States | |
Liu, Lingling1; Zhang, Xiaoyang1,2; Yu, Yunyue3; Donnelly, Alison4 | |
2017-02-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2017 |
卷号 | 12期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
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 degrees 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. |
英文关键词 | peak coloration long-term trend satellite data flux data field observation temperature Singular Spectrum Analysis |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395633000001 |
WOS关键词 | SINGULAR-SPECTRUM ANALYSIS ; ENHANCED VEGETATION INDEX ; LAND-SURFACE PHENOLOGY ; IMAGE TIME-SERIES ; CLIMATE-CHANGE ; SPRING PHENOLOGY ; GROWING-SEASON ; SATELLITE DATA ; AUTUMN PHENOLOGY ; TIBETAN PLATEAU |
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/37557 |
专题 | 气候变化 |
作者单位 | 1.South Dakota State Univ, GSCE, 1021 Medary Ave, Brookings, SD 57007 USA; 2.South Dakota State Univ, Dept Geog, Brookings, SD 57007 USA; 3.NOAA NESDIS STAR, 5200 Auth Rd, Camp Springs, MD 20746 USA; 4.Univ Wisconsin Milwaukee, Dept Geog, Milwaukee, WI 53201 USA |
推荐引用方式 GB/T 7714 | Liu, Lingling,Zhang, Xiaoyang,Yu, Yunyue,et al. Detecting spatiotemporal changes of peak foliage coloration in deciduous and mixedforests across the Central and Eastern United States[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(2). |
APA | Liu, Lingling,Zhang, Xiaoyang,Yu, Yunyue,&Donnelly, Alison.(2017).Detecting spatiotemporal changes of peak foliage coloration in deciduous and mixedforests across the Central and Eastern United States.ENVIRONMENTAL RESEARCH LETTERS,12(2). |
MLA | Liu, Lingling,et al."Detecting spatiotemporal changes of peak foliage coloration in deciduous and mixedforests across the Central and Eastern United States".ENVIRONMENTAL RESEARCH LETTERS 12.2(2017). |
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