Alan Grainger

TL;DR: Estimates of extinction risks for sample regions that cover some 20% of the Earth's terrestrial surface show the importance of rapid implementation of technologies to decrease greenhouse gas emissions and strategies for carbon sequestration.

TL;DR: The Global Forest Resources Assessment 2015 (FRA 2015) of the Food and Agriculture Organization of the United Nations FRA 2015 was based on responses to surveys by individual countries using a common reporting framework, agreed definitions and reporting standards as discussed by the authors.

TL;DR: It is shown that constructing a reliable trend is difficult and evidence for decline is unclear, within the limits of errors involved in making global estimates, and a better monitoring program is needed to give a more reliable trend.

TL;DR: An estimate of global forest extent in dryland biomes is reported, based on analyzing more than 210,000 0.5-hectare sample plots through a photo-interpretation approach using large databases of satellite imagery at very high spatial resolution and very high temporal resolution, available through the Google Earth platform.

TL;DR: The authors argue that long-run changes in forest cover in a country or region cannot be separated from the overall pattern of land use changes, and this pattern is determined by relative land values.