Ratio of existing ski areas in the Alps with natural snow-reliability under current conditions and warmer conditions
Winter tourism is a significant part of the economy of Alpine countries and the most important source of income in many regions. In Austria, winter tourism revenue makes up 4.5 per cent of GNP and half of the total income from tourism. Much of winter tourism is based around the ski industry, which is dependent on reliable snow conditions. Although snow fall is expected to increase at high elevations, it is winter temperatures that largely determi...
01 Jun 2007 - by Hugo Ahlenius, 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, watershed protection, and recreation.
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Freshwater use by sector at the beginning of the 2000s
The agricultural sector is by far the biggest user of freshwater. Analysis indicates that:
- In the United States, agriculture accounts for some 49% of total freshwater use, with 80% of this volume being used for irrigation (Shiklomanov, 1999).
- In Africa and Asia, an estimated 85-90% of all freshwater used is for agriculture (Shiklomanov, 1999).
- According to estimates for the year 2000, agriculture accounted for 67% of the world’s total fr...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique)