Dégradation et Régime des Terres

Los objetivos de este trabajo están fundamentados en la necesidad prioritaria que tiene nuestro planeta y por ende nuestro país, de no seguir siendo devastados por las emisiones mundiales responsables del cambio climático, mismas que amenazan la vida del ser humano y de los miles de ecosistemas que lo componen.

Field experiments were carried out during four cropping seasons (summer 2013, winter 2013/14, summer 2014 and winter 2014/15) to evaluate sustainable interventions to combat degradation associated with salt accumulation. Field trials were conducted with various treatments including application of gypsum, organic matter, bio-fertilizers, ammonia injection, and installation of mole drains.

In this issue: the meeting in Antalya laid the foundation for the implementation of the ELD Initiative in Central Asia. The ELD CA Initiative held a working meeting in Ashgabat. Communication issues have been identified. A working meeting of the group of Tajik specialists. ELD CA paths of cooperation are being determined. A 6-step approach to issues of the Economics of Land Degradation.

Land degradation and desertification are among the biggest environmental challenges of our time. In the last 40 years, we lost nearly a third of the world’s arable farmland due to erosion, just as the number of people to be fed from it almost doubled. That’s why the UN General Assembly declared 2015 as the International Year of Soils.

As the world’s population continues to rise, there is
an ever increasing demand for our land to produce
a diverse range of products such as food, timber,
and fuel. Our growing need for these goods is
leading to higher levels of competition between
different land uses and, as a result, land users. Not
only is the quantity of land available for production

Jordanian rangelands are a source of valued livestock produce, carbon storage, biodiversity, and medicinal plants. They also serve as watersheds that receive rainfall, yield surface water, and replenish groundwater throughout the area east and south of the western Jordan highlands. Appropriate land management, which is currently lacking, can protect and maximize these services for society.

The Kelka forest in the Mopti region of Mali is important for the provision of ecosystem services like carbon sequestration and maintenance of the hydrological cycle. The Kelka forest area occupies more than 300, 000 hectares with 15

Soil erosion and deposition values were estimated using pixel based landscape information and the Unit Stream Power Erosion Deposition (USPED) model, which works with the Universal Soil Loss Equation (USLE) parameters.

The development of modern high efficiency bioenergy technologies has the potential to improve energy security and access while reducing environmental impacts and stimulating low-carbon development. While modern bioenergy production is increasing in the world, it still makes a small contribution to our energy matrix.

Projected land demands for bioenergy fall well within conservative estimates of current and future land availability (240 to 905 Mha). Estimates for the amount of modern bioenergy needed to meaningfully mitigate climate change range from 80 to 200 EJ in the 2050 timeframe. At the upper end of this range, we estimate that about 200 million hectares would be required.

Land degradation and desertification reduce the provision of ecosystem services by lands and soils. This constrains development, reduces water, food, and energy security, and triggers resource conflicts.

Drylands have always been the subject to intra- and inter-annul fluctuations of climate conditions, with important consequences for ecosystem function and productivity.