July 2009


Jul 21, 2009Landsat Used to Examine Wood Supply Uncertainty

Source: U.S. Forest Service As members of the forest products industry continue to reduce their landholdings, monitoring reliable future timber supplies becomes an increasingly important issue. This issue requires both spatial and forest [...]

Jun 12, 2009Forest Changes in the U.S. Southwest

In a recent study published in Remote Sensing of Environment, Landsat science team member James Vogelmann and colleagues have used Landsat data collected between 1988 and 2006 to assess forest changes in New Mexico's Santa Fe National Forest. [...]

Apr 30, 2009Landsat Among Suite of Satellites Used in Study Linking Drought to Asian Wildfire Emissions

Source: Gretchen Cook-Anderson In the last decade, Asian farmers have cleared tens of thousands of square miles of forests to accommodate the world’s growing demand for palm oil, an increasingly popular food ingredient. Ancient peatlands have [...]

lowland forest age images
Jan 27, 2009Landsat, GLAS, and Google Earth Used in Concert to Study Amazonian Forests

Contributor: Eileen Helmer In a study published today, carbon accumulation rates of tropical forests biomass regrowth in areas of abandoned agriculture have been measured entirely from space for the first time. Study authors combined [...]

Sep 26, 2008Fusing Landsat and MODIS Data to Better Estimate Boreal Forest Loss

This month in Remote Sensing of Environment, Potapov et al. report on their method of combining MODIS and Landsat imagery to estimate forest loss in the world’s boreal forests. Understanding forest loss in boreal forests is especially important [...]

Aug 10, 2008Landsat Key in New UNEP Atlas of Africa’s Environmental Change

Glacial Retreat to Rapid Urbanization Chronicled in Landmark Satellite Report to Africa's Environment Ministers Source: United Nations Environment Programme Africa's rapidly changing environmental landscape, from the disappearance of glaciers in [...]

Jul 31, 2008Landsat 7 SLC-off Data Evaluated for Forest Change Detection

Researchers from the Canadian Forest Service's Pacific Forestry Centre and the U.S. Geological Survey have published a study which evaluates the utility of histogram– and segment–based Landsat SLC-off gap-filled data products for change [...]

Jul 10, 2008Diversity and Biomass of Tropical Forests Cleared for Land Development

• To learn more about the tropical forests that are cleared when urban and residential development spreads, scientists assembled the most comprehensive time series of land cover maps to date for the island of Puerto Rico.  They learned that [...]

Landsat-derived land use maps of St. Kitts and Nevis Islands.
Jul 10, 2008New Landsat-Based Maps of Complex Caribbean Islands Reveal Conservation Opportunities Where Sugar Cane Cultivation Has Become Unprofitable

A new set of vegetation maps for five islands of the Caribbean Lesser Antilles, including Grenada, St. Kitts, Nevis, St. Eustatius and Barbados, appear in the June issue of the Caribbean Journal of Science.  Most of the maps are based on Landsat [...]

Jun 2, 2008Report Using Landsat and SPOT Data Shows Rapid Demise of Papua New Guinean Forests

Source: University of Papua New Guinea Remote Sensing Centre At the same time that the Government of Papua New Guinea is seeking compensation for conserving the carbon-trapping capacity of its vast tropical forests, destruction of these same [...]

Feb 26, 2008Landsat Used to Quantify Sumatran Deforestation and Elephant Peril

The World Wildlife Federation released a report this week warning that accelerated deforestation rates in Sumatra are increasing CO2emissions and pushing native elephants to the brink of extinction. A WWF team of researchers used Landsat data to [...]

The devastation of southern Gulf Coast forests by Hurricane Katrina was documented in before-and-after images from the Landsat 5 satellite.
Nov 15, 2007Landsat Helps Show That Forests Damaged by Hurricane Katrina Become Major Carbon Source

With the help of Landsat and MODIS data, a research team has estimated that Hurricane Katrina killed or severely damaged 320 million large trees in Gulf Coast forests, which weakened the role the forests play in storing carbon from the [...]

Asian mangrove
Oct 30, 2007A Landsat Survey of Mangroves in Tsunami Prone Regions

Agricultural expansion rather than shrimp farming is the major factor responsible for the destruction of tropical mangrove forests in the tsunami-impacted regions of Indonesia, Malaysia, Thailand, Myanmar, Bangladesh, India, and Sri Lanka, [...]

two regions of the Peruvian rain forest
Aug 9, 2007Landsat Helps Rain Forest Protection Work in Peru

Contributor: Gregory Asner A new regional study shows that land-use policies in Peru have been key to tempering rain forest degradation and destruction in that country. Scientists at the Carnegie Institution’s Department of Global Ecology led an [...]

Road
Jun 8, 2007Landsat Helps Assess Impacts of Industrial Logging in Central Africa

Though the dense humid forests of Central Africa have been regarded as among the most pristine on Earth, the expansion of industrial logging and the accompanying proliferation of road density are threatening the future of this important [...]

May 23, 2007Michigan State University Uses Landsat to Monitor Global Climate Change

Source: Walter Chomentowski, Global Observatory for Ecosystem Services, Michigan State University Scientists at Michigan State University’s Global Observatory for Ecosystem Services – or GOES – have a treasure trove of resources many of their [...]

Science magazine compiled list of Earth-observing satellites
May 15, 2007Rainforest Monitoring Improved by Data Fusion

In late April, Science magazine reported that Brazil is a world leader in tropical forest monitoring thanks to their use of data from a number of Earth-observing satellites. Brazil's Instituto Nacional de Pesquisas Espaciais (National Institute [...]

southern tip of Madagascar
May 9, 2007Forest Trends in Madagascar

A recently released study provides evidence that social dictums influence the stability of tropical dry forests more than proximate population density. Often, it is assumed that a rising local population means rising pressure on forest [...]

Landsat Image of the Amazon River, Brazil
Aug 1, 2006Small-Scale Logging Leads to Clear-cutting in Brazilian Amazon

A NASA-funded study has discovered an important indicator of rain forest vulnerability to clear-cutting in Brazil. This five-year study is the first to quantify the relationship between selective logging, where loggers extract individual trees [...]