Satellite detection of cumulative and lagged effects of drought on autumn leaf senescence over the Northern Hemisphere
文献类型：期刊论文
| 作者 | Peng, Jie1,2; Wu, Chaoyang1,2; Zhang, Xiaoyang3; Wang, Xiaoyue1; Gonsamo, Alemu4 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2019-06-01 |
| 卷号 | 25期号:6页码:2174-2188 |
| 关键词 | autumn phenology cumulative effect drought lagged effect |
| ISSN号 | 1354-1013 |
| DOI | 10.1111/gcb.14627 |
| 通讯作者 | Wu, Chaoyang(wucy@igsnrr.ac.cn) |
| 英文摘要 | Climate change has substantial influences on autumn leaf senescence, that is, the end of the growing season (EOS). Relative to the impacts of temperature and precipitation on EOS, the influence of drought is not well understood, especially considering that there are apparent cumulative and lagged effects of drought on plant growth. Here, we investigated the cumulative and lagged effects of drought (in terms of the Standardized Precipitation-Evapotranspiration Index, SPEI) on EOS derived from the normalized difference vegetation index (NDVI3g) data over the Northern Hemisphere extra-tropical ecosystems (>30 degrees N) during 1982-2015. The cumulative effect was determined by the number of antecedent months at which SPEI showed the maximum correlation with EOS (i.e., Rmax-cml) while the lag effect was determined by a month during which the maximum correlation between 1-month SPEI and EOS occurred (i.e., Rmax-lag). We found cumulative effect of drought on EOS for 27.2% and lagged effect for 46.2% of the vegetated land area. For the dominant time scales where the Rmax-cml and Rmax-lag occurred, we observed 1-4 accumulated months for the cumulative effect and 2-6 lagged months for the lagged effect. At the biome level, drought had stronger impacts on EOS in grasslands, savannas, and shrubs than in forests, which may be related to the different root functional traits among vegetation types. Considering hydrological conditions, the mean values of both Rmax-cml and Rmax-lag decreased along the gradients of annual SPEI and its slope, suggesting stronger cumulative and lagged effects in drier regions as well as in areas with decreasing water availability. Furthermore, the average accumulated and lagged months tended to decline along the annual SPEI gradient but increase with increasing annual SPEI. Our results revealed that drought has strong cumulative and lagged effects on autumn phenology, and considering these effects could provide valuable information on the vegetation response to a changing climate. |
| WOS关键词 | LAND-SURFACE PHENOLOGY ; NET ECOSYSTEM PRODUCTIVITY ; WATER-USE EFFICIENCY ; CLIMATE-CHANGE ; VEGETATION PHENOLOGY ; TEMPORAL DYNAMICS ; 3 DECADES ; RESPONSES ; CHINA ; VARIABILITY |
| 资助项目 | Chinese Academy of Sciences[XDA19040103] ; National Natural Science Foundation of China[41871225] ; Key Research Program of Frontier Sciences[QYZDB-SSW-DQC011] |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000467441900024 |
| 出版者 | WILEY |
| 资助机构 | Chinese Academy of Sciences ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/59823]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wu, Chaoyang |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.South Dakota State Univ, Dept Geog, GSCE, Brookings, SD 57007 USA 4.Univ Toronto, Dept Geog & Planning, Toronto, ON, Canada |
| 推荐引用方式 GB/T 7714 | Peng, Jie,Wu, Chaoyang,Zhang, Xiaoyang,et al. Satellite detection of cumulative and lagged effects of drought on autumn leaf senescence over the Northern Hemisphere[J]. GLOBAL CHANGE BIOLOGY,2019,25(6):2174-2188. |
| APA | Peng, Jie,Wu, Chaoyang,Zhang, Xiaoyang,Wang, Xiaoyue,&Gonsamo, Alemu.(2019).Satellite detection of cumulative and lagged effects of drought on autumn leaf senescence over the Northern Hemisphere.GLOBAL CHANGE BIOLOGY,25(6),2174-2188. |
| MLA | Peng, Jie,et al."Satellite detection of cumulative and lagged effects of drought on autumn leaf senescence over the Northern Hemisphere".GLOBAL CHANGE BIOLOGY 25.6(2019):2174-2188. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。