Do recent NDVI trends demonstrate boreal forest decline in Alaska
Bibliographic Data
| ID | 15549409 |
|---|---|
| Authors | Nicole M Fiore (0000-0002-6611-4153, corresponding author), Michael L Goulden (0000-0002-9379-3948, University of California, Irvine), C I Czimczik (0000-0002-8251-6603, University of California, Irvine), Shawn Pedron (0000-0001-7999-6119, University of California, Irvine), M A G Tayo (0000-0002-3317-1864, University of California, Irvine) |
| Year | 2020 |
| Volume | 15 |
| Issue | 9 |
| Pages | 095007-095007 |
| Publication date | 2020-06-12 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/ab9c4c |
| OpenAlex | W3034393447 |
| Language | EN |
| References cited | 29 |
Remote sensing analyses of boreal forest regions have found widespread decreasing or increasing trends in normalized difference vegetation index (NDVI). Initially, these trends were attributed to climate change induced shifts in primary productivity. It is emerging, however, that fire disturbance and subsequent succession also strongly impact the optical properties of boreal forests. Here we use NDVI time series data from Landsat (1999–2018) paired with surveys of 102 forest stands with known recent fire history to investigate the relationship between NDVI and forest structure during succession. We found that NDVI varies systematically with stand age as a result of successional changes in forest structure and composition and that the proportion of deciduous (broad-leaved) trees in the upper canopy is a better predictor of NDVI than leaf area index. Recent fire disturbance led to strong NDVI decreases and early post-fire recovery of herbaceous and deciduous vegetation to strong NDVI increases. The mid-succession transition from deciduous to evergreen (needle-leaved) stands led to weak NDVI decreases, while mid-to-late succession thinning of evergreen canopies led to weak NDVI increases. Thus, both increasing and decreasing NDVI stands occur naturally across the landscape, and do not necessarily reflect a large-scale shift in boreal forest productivity
Biology · Boreal · Climate change · Climatology · Deciduous · Ecological succession · Evergreen · Geography · Normalized Difference Vegetation Index · Physical geography · Taiga · Vegetation (pathology · Climate change and permafrost · Environmental Science · Fire effects on ecosystems · Rangeland and Wildlife Management · Ecology · Forestry · Geology
Satellite-observed photosynthetic trends across boreal North America associated with climate and fire disturbance
On the relation between NDVI, fractional vegetation cover, and leaf area index
A Large and Persistent Carbon Sink in the World’s Forests
Satellite observations of high northern latitude vegetation productivity changes between 1982 and 2008
Comparing forest measurements from tree rings and a space-based index of vegetation activity in Siberia
Canadian boreal forest greening and browning trends
Varying boreal forest response to Arctic environmental change at the Firth River, Alaska
Spatial heterogeneity of greening and browning between and within bioclimatic zones in northern West Siberia
| Citation velocity | historical |
|---|---|
| Highly cited | No |