Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14107 |
Detecting early warning signals of tree mortality in boreal North America using multiscale satellite data | |
Rogers, Brendan M.1; Solvik, Kylen1; Hogg, Edward H.2; Ju, Junchang3; Masek, Jeffrey G.3; Michaelian, Michael2; Berner, Logan T.4; Goetz, Scott J.4 | |
2018-06-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:6页码:2284-2304 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada |
英文摘要 | Increasing tree mortality from global change drivers such as drought and biotic infestations is a widespread phenomenon, including in the boreal zone where climate changes and feedbacks to the Earth system are relatively large. Despite the importance for science and management communities, our ability to forecast tree mortality at landscape to continental scales is limited. However, two independent information streams have the potential to inform and improve mortality forecasts: repeat forest inventories and satellite remote sensing. Time series of tree-level growth patterns indicate that productivity declines and related temporal dynamics often precede mortality years to decades before death. Plot-level productivity, in turn, has been related to satellite-based indices such as the Normalized difference vegetation index (NDVI). Here we link these two data sources to show that early warning signals of mortality are evident in several NDVI-based metrics up to 24 years before death. We focus on two repeat forest inventories and three NDVI products across western boreal North America where productivity and mortality dynamics are influenced by periodic drought. These data sources capture a range of forest conditions and spatial resolution to highlight the sensitivity and limitations of our approach. Overall, results indicate potential to use satellite NDVI for early warning signals of mortality. Relationships are broadly consistent across inventories, species, and spatial resolutions, although the utility of coarse-scale imagery in the heterogeneous aspen parkland was limited. Longer-term NDVI data and annually remeasured sites with high mortality levels generate the strongest signals, although we still found robust relationships at sites remeasured at a typical 5 year frequency. The approach and relationships developed here can be used as a basis for improving forest mortality models and monitoring systems. |
英文关键词 | browning dieback drought inventory NDVI pests and pathogens productivity |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000433717700007 |
WOS关键词 | LAND-SURFACE MODELS ; CLIMATE-CHANGE ; WHITE SPRUCE ; HIGH-LATITUDES ; CANADA BOREAL ; BLACK SPRUCE ; FOREST PRODUCTIVITY ; YUKON-TERRITORY ; DROUGHT STRESS ; UNITED-STATES |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/16761 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Woods Hole Res Ctr, Falmouth, MA 02540 USA; 2.Nat Resources Canada, Northern Forestry Ctr, Canadian Forest Serv, Edmonton, AB, Canada; 3.NASA, Goddard Space Flight Ctr, Biospher Sci Lab Code 618, Greenbelt, MD USA; 4.No Arizona Univ, Sch Informat Comp & Cyber Syst, Flagstaff, AZ USA |
推荐引用方式 GB/T 7714 | Rogers, Brendan M.,Solvik, Kylen,Hogg, Edward H.,et al. Detecting early warning signals of tree mortality in boreal North America using multiscale satellite data[J]. GLOBAL CHANGE BIOLOGY,2018,24(6):2284-2304. |
APA | Rogers, Brendan M..,Solvik, Kylen.,Hogg, Edward H..,Ju, Junchang.,Masek, Jeffrey G..,...&Goetz, Scott J..(2018).Detecting early warning signals of tree mortality in boreal North America using multiscale satellite data.GLOBAL CHANGE BIOLOGY,24(6),2284-2304. |
MLA | Rogers, Brendan M.,et al."Detecting early warning signals of tree mortality in boreal North America using multiscale satellite data".GLOBAL CHANGE BIOLOGY 24.6(2018):2284-2304. |
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