World Day to Combat Desertification focuses on human security

June 17, 2009

Human security is under threat from desertification, land degradation and drought. Combating this threat requires an integrated international response, which is why the theme for this year's World Day to Combat Desertification is 'Conserving land and water = Securing our common future'.

Desertification, land degradation and drought (DLDD) deprive people of food, water and their homes and can undermine security and even trigger conflicts. According to the UN Convention to Combat Desertification (UNCCD), these phenomena have already forced between 17 and 24 million to leave their homes and that number is expected to rise to 200 million by 2050.

In its effort to combat DLDD, the UNCCD is calling for the global creation of short-, medium- and long-term strategies to deal with the scarcity of fertile soil by strengthening ecosystem management through the use of technology, knowledge and engineering concepts.

The term 'desertification' does not refer to the spread of existing deserts, but to the creation of new ones through the degradation of drylands, which cover 40% of the world's land surface. Since dryland desertification can be remedied by using appropriate land management techniques, it is essential to monitor the areas most at risk.

ESA has been working closely with the UNCCD secretariat for more than eight years, developing and demonstrating information services based on satellite Earth observation (EO) technologies to allow a better assessment and monitoring of desertification and land degradation.

EO satellites are able to highlight relevant changes in land use and can provide authorities with an overall picture of key pressures on land, such as burned land due to forest fires, erosion processes and their trends over time.

In 2004, ESA launched a large pilot project called DesertWatch to develop a set of satellite-based information services to monitor and assess the status of land degradation with the support of four of the European countries most affected by desertification - Greece, Italy, Portugal and Turkey.

These satellite data were also combined with in-situ information, processing tools, models and geo-information systems to create standardised and comparable geo-information products that were also used to satisfy UNCCD reporting requirements.

ESA is currently preparing an extension to DesertWatch to review and adapt the methodology developed during the first project so it can be applied globally, for the benefit of all UNCCD Contracting Parties. The new methodology will be demonstrated in Portugal, Brazil and Mozambique.

ESA, through its TIGER initiative, is also supporting African countries to overcome water-related problems, such as drought, and to bridge gaps in information related to water through the use of EO technology. Under the first phase of TIGER, ESA provided more than 8500 satellite-based products free of charge to African researchers working on water-related research activities and management projects.

At the request of African water authorities, ESA has extended the initiative. TIGER II will support African efforts to develop sustainable observation systems by using EO technology that will help to establish a sound scientific basis for developing effective adaptation or mitigation measures against the impacts of climate change.

This year's official observance of the World Day to Combat Desertification is being held in Bonn, Germany. ESA will attend the ceremony to highlight the role of satellites in reversing desertification and land degradation.
-end-
The UNCCD was established 15 years ago today in the wake of the 1992 Earth Summit in Rio de Janeiro, which recognised desertification as a major social and environmental problem.

European Space Agency

Related Drought Articles from Brightsurf:

Redefining drought in the US corn belt
As the climate trends warmer and drier, global food security increasingly hinges on crops' ability to withstand drought.

The cost of drought in Italy
Drought-induced economic losses ranged in Italy between 0.55 and 1.75 billion euros over the period 2001-2016, and droughts caused significant collateral effects not only on the agricultural sector, but also on food manufacturing industries.

Consequences of the 2018 summer drought
The drought that hit central and northern Europe in summer 2018 had serious effects on crops, forests and grasslands.

Songbirds reduce reproduction to help survive drought
New research from the University of Montana suggests tropical songbirds in both the Old and New Worlds reduce reproduction during severe droughts, and this - somewhat surprisingly -- may actually increase their survival rates.

Predicting drought in the American West just got more difficult
A new, USC-led study of more than 1,000 years of North American droughts and global conditions found that forecasting a lack of precipitation is rarely straightforward.

Where is the water during a drought?
In low precipitation periods - where and how is the limited available water distributed and what possibilities are there for improving retention in the soil and the landscape?

What does drought mean for endangered California salmon?
Droughts threatens California's endangered salmon population -- but pools that serve as drought refuges could make the difference between life and death for these vulnerable fish.

With shrinking snowpack, drought predictability melting away
New research from CU Boulder suggests that during the 21st century, our ability to predict drought using snow will literally melt away.

An evapotranspiration deficit drought index to detect drought impacts on ecosystems
The difference between actual and potential evapotranspiration, technically termed a standardized evapotranspiration deficit drought index (SEDI), can more sensitively capture the biological changes of ecosystems in response to the dynamics of drought intensity, compared with indices based on precipitation and temperature.

Sesame yields stable in drought conditions
Research shows adding sesame to cotton-sorghum crop rotations is possible in west Texas

Read More: Drought News and Drought Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.