Quantifying variation in forest disturbance, and its effects on aboveground biomass dynamics, across the eastern United States

We analyzed forest inventory data from the eastern United States to estimate plot-level variation in mortality (relative to a long-term background rate for individual trees) for nine distinct forest regions. Disturbances that produced at least a fourfold increase in tree mortality over an approximately 5 year interval were observed in 1–5% of plots in each forest region.


Remotely sensed indicators of forest conservation status: Case study from a Natura 2000 site in southern Portugal

We test the complementarity and joint effectiveness of airborne multispectral and laser scanning (lidar) in providing robust indicators of conservation status.Principal forest types and other land covers are mapped to an accuracy of up to 70% (11 land cover classes) and 81% (5 classes) by fusing the two remote sensing datasets, results that are superior to using either one alone.

Simonson, W.D.; Allen, H.D.; Coomes, D.A.

Optical and SAR sensor synergies for forest and land cover mapping in a tropical site in West Africa

Classification of a study area in West Africa we integrated the optical sensors Landsat Thematic Mapper (TM) and the Advanced Visible and Near Infrared Radio meter type 2 (AVNIR-2) with the Phased Arrayed L-band SAR (PALSAR) sensor, the latter two on-board the Advanced Land Observation Satellite (ALOS), using traditional Maximum Likelihood (MLC) and Neural Networks (NN) classifiers.

Laurin, G.V. et al.

Spatially explicit models to analyze forest loss and fragmentation between 1976 and 2020 in southern Chile

Identification of the geophysical variables (“pattern drivers”) that explain the spatial patterns of forest loss and fragmentation between 1976 and 1999 using both a GIS-based land-use change model (GEOMOD) and spatially explicit logistic regression. Includes projections where and how much forest fragmentation will occur in the future by extrapolation of the current rate of deforestation to 2010 and 2020.

Echeverria, C.; Coomes, D.A.; Hall, M.; Newton, A.C.

Rapid deforestation and fragmentation of Chilean Temperate Forests

Three land-cover maps were derived from satellite imagery acquired over 25 years (1975, 1990 and 2000), and were used to assess the patterns of deforestation and forest fragmentation in the coastal range of south-central Chile. Between 1975 and 2000, there was a reduction in natural forest area of 67% in the study area, which is equivalent to an annual forest loss rate of 4.5% per year using a compound-interest-rate formula.

Echeverria, C.; Coomes, D.A. et al.

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