The message in this short, yet stark sentence highlights a phenomenon that farmers, particularly in marginalized dryland areas, have been experiencing for years – the threat of desertification and climate change to their lives. Carbon sequestration, however, serves a dual purpose to remedy this threat. Firstly, global warming can be mitigated significantly by removing atmospheric carbon dioxide and sequestering it in soil. Secondly, increased carbon in the soil has great value as a food-producing asset.

Esta cita subraya un fenómeno que los agricultures, particularmente los de las áreas secas marginadas, llevan años experimentando: la amenaza de la desertificación y el cambio climático para sus vidas. El secuestro de carbono, sin embargo, tiene una doble utilidad para revertir esta amenaza: en primer lugar, el calentamiento global puede ser mitigado significativamente mediante la eliminación del dióxido de carbono de la atmósfera y su secuestro en el suelo; en segundo lugar, el aumento de carbono en el suelo tiene un gran valor como activo para la producción de alimento.

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Susceptibility to desertification in southern Europe is increasing and rehabilitation of desertification-threatened Mediterranean soils is a challenge due to the inhospitality of the environment. In particular, recovery of anthropogenic soils (mainly human-derived artefacts from housing construction and other inert materials or topsoil of terminal phase municipal landfills) cannot rely on spontaneous processes and low-cost/low-impact strategies are needed to prevent desertification.

Artemisia sphaerocephala and A. ordosica are two dominant shrub species in Mu Us sandy land (Inner Mongolia, China) and are widely used for vegetation restoration. However, there are two different conclusions about the effect of light on their germination: light promotes germination versus light inhibits germination. The aim of this study was to evaluate these two conclusions and relate the results to instances of failure of these two species to germinate well when air-dispersed in revegetation projects.

El trabajo analiza la situación de conflicto que se presenta en las tierras secas de Mendoza, entre productores caprinos y programas de lucha contra la desertificación, a propósito de las prácticas productivas y el uso de los recursos naturales.Se aborda un caso de estudio situado en el extremo noreste de la provincia de Mendoza, polo hiperárido de la región, gravemente afectado por procesos de desertificación, con una extensión de 10.007km2 y poblado por 3015 habitantes, donde dominan las pequeñas explotaciones caprinas.

The estimation of environmental sensibility to desertification at regional scale requires the setting up of elaboration and updating methodologies capable of handling considerable amounts of data in an integrated approach. This would allow evaluating the different stages of environmental degradation as well as the existing interactions among the singular components of the territory. These maps are also strongly related to climate conditions, land use changes and new data availability.

The Development Marketplace 2009 focused on adaptation to climate change. This paper identifies lessons from the Marketplace and assesses their implications for adaptation support. The findings are based on: statistical tabulation of all proposals; in-depth qualitative and quantitative analysis of the 346 semi-finalists; and interviews with finalists and assessors. Proposals were fuelled by deep concerns that ongoing climate change and its impacts undermine development and exacerbate poverty, migration and food insecurity.

The climate change (CC) caused by increase in atmospheric concentration of CO2 and other Greenhouse Gases (GHGs), can be addressed through adaptation and mitigation strategies. Adaptation consists of strategies which minimize vulnerability to CC. The objective is to increase resilience of the ecosystems and communities through adoption of specific sustainable land management (SLM) techniques that have adaptive benefits. On the other hand, the goal of mitigation strategies is to enhance soil and vegetation (land) sinks for absorbing atmospheric CO2 and to minimize net emissions.

El documento explica y analiza los impactos de los cambios climáticos en Sudamérica reflejados en el retroceso de los glaciares, la agricultura. los ecosistemas, la salud y las iniciativas de mitigación existentes en la región.

Environmental change and adaptation
in degraded agro-ecosystems: the case
of highland Madagascar
Jon Unruh*, Bill McConnell** and Joe Rodman†
Area (2010) 42.3, 359–368

Often, when people think of drylands, they think of deserts and hostile living conditions, economic hardship and water scarcity. But that is not what drylands are all about. If managed well, drylands are often fertile and capable of supporting the habitats, crops and livestock that sustain the entire global population.