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Tag: Forest

Climate change vulnerability in Africa
Multiple stresses make most of Africa highly vulnerable to environmental changes, and climate change is likely to increase this vulnerability. This graphic shows which of the regions of Africa (North Africa, West Africa,...
17 May 2005 - by Delphine Digout, Revised by Hugo Ahlenius, UNEP/GRID-Arendal
Climate change vulnerability in Africa
Multiple stresses make most of Africa highly vulnerable to environmental changes, and climate change is likely to increase this vulnerability. This graphic shows which of the regions of Africa (North Africa, West Africa,...
20 Sep 2005 - by Delphine Digout, Revised by Hugo Ahlenius, UNEP/GRID-Arendal
Tree line in the Arctic
This graphic shows the location of the arctic tree line. Boreal forest occurs only to the south of the tree line (the dark green line on the graphic). The Arctic area, as defined by the Arctic Monitoring and Assessment P...
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Tree line in the Arctic
This graphic shows the location of the arctic tree line. Boreal forest occurs only to the south of the tree line (the dark green line on the graphic). The Arctic area, as defined by the Arctic Monitoring and Assessment P...
07 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Impact of human activities on reindeer habitat - Barents region
The impact of infrastructure development on reindeer potentially threatens the cultural traditions of the Barents region indigenous people and their chosen way of life. The probability of impact on wildlife, vegetation a...
26 Jan 2006 - by Philippe Rekacewicz, Julien Rouaud, UNEP/GRID-Arendal
Barren Lands
Deforestation is well known for aggravating erosion. Bare soil has no protection against heavy rain, washing away immediately. On hillsides, it readily turns into mudslides leaving people very little time to seek refuge ...
01 Feb 2006 - by Emmanuelle Bournay, UNEP/GRID-Arendal
Protected areas and conservation hotspots in Albania
The graphic shows the protected areas of Albania, the proposed areas for protection and areas with endangered species. Albania is well known for its high diversity of ecosystems and habitats. Within its territory there a...
11 Feb 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Contribution of forest to GDP, and ratio of forest exports out of total exports, for selected countries
Forestry provides more than 8% of the GDP in some of the poorest countries. In most of the developing country production is consumed domestically, but for some countries forestry contributes significantly to total export...
02 Nov 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Schematic diagram of glacier, permafrost and forest limits as a function of mean annual air temperature and average annual precipitation
Glaciers and ice caps form around the world where snow deposited during the cold/humid season does not entirely melt during warm/dry times. This seasonal snow gradually becomes denser and transforms into perennial firn (...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Landcover - Europe and Central Asia
The Western part of the Eurasian continent, has some of the most populated and fertile parts of the World. Central Europe is densely populated, with few remaining fragments of undisturbed habitat, except for the mountain...
20 Jul 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Areas affected by deforestation
Deforestation is a key global environmental indicator. Many regions of the world are affected by deforestation: namely in South America (Brazil), Central Africa (Congo), Southeast Asia (Indonesia) and Eastern Europe.
07 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Disappearing forests
From 1970 to 1990 there was significant deforestation of both primary and secondary forests in Thailand: during this thirty year period, the area covered by primary and secondary forest declined by more than half.
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Conversion of terrestrial biomes
It is not possible to estimate accurately the extent of different biomes prior to significant human impact, but it is possible to determine the “potential” area of biomes based on soil and climatic conditions.
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Millennium Ecosystem Assessment conceptual framework
International demand for timber may lead to a regional loss of forest cover, which increases flood magnitude along a local stretch of a river. Similarly, the interactions can take place across different time scales. Acti...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Changes in forest area
Timber is harvested from forests and plantations and used for a variety of building, manufacturing, fuel, and other needs. Forests (providing fuelwood and charcoal), agricultural crops, and manure all serve as sources of...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Main direct drivers of change in biodiversity and ecosystems (CWG)
The cell color indicates impact of each driver on biodiversity in each type of ecosystem over the past 50–100 years. High impact means that over the last century the particular driver has significantly altered biodiversi...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Annual flow of benefits from forests in selected countries
In most countries, the marketed values of ecosystems associated with timber and fuelwood production are less than one third of the total economic value, including non-marketed values such as carbon sequestration, watersh...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Locations reported by various studies as undergoing high rates of land cover change in the past few decades
In the case of forest cover change, the studies refer to the period 1980–2000 and are based on national statistics, remote sensing, and, to a limited degree, expert opinion. In the case of land cover change resulting fro...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Number of ecosystem services enhanced or degraded by 2050
100% degradation means that all the services in the category were degraded in 2050 compared with 2000, while 50% improvement could mean that three out of six services were enhanced and the rest were unchanged or that fou...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Forests in the Caucasus ecoregion
About 17% of the total land area of the Caucasus is covered by forests, primarily found between altitudes of 500-2000m and growing on steep slopes. Most forests are broadleaf forests but a number of different types are f...
01 Nov 2008 - by WWF-Caucasus, design Manana Kurtubadze
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