ong et Développement Agricole Au Burkina Faso: Présence Majeure et Effets Mineurs

This report analyses the effect of NGO participation on Agriculture developmen

ONG et développement agricole au Burkina Faso : présence majeure et effets mineurs

This report analyses the effect of NGO participation on Agriculture developmen

Soil Compaction of Hardin Hall Green Space Social Trail on the University of Nebraska-Lincoln\u27s East Campus

Soil compaction is a common agricultural and urban landscape problem, particularly along cow paths and social trails, respectively. The social trail in the green space of Hardin Hall on the University of Nebraska- Lincoln East Campus has visual cues of soil compaction, due to the slow rate of water infiltration and lack of vegetation. Being the focus area of this study, a sampling grid was placed on the trail by measuring and sectioning it into equal sections. These sections were further divided into subsections of on-path and off-path for comparison. Soil structure, texture, bulk density, and water infiltration were analyzed to determine the severity of soil compaction occurring on this social trail. Both soil structure and soil texture were found to be the same when comparing on-path and off-path samples. Bulk density was found to be significantly ( p \u3c 0.001) higher for the on-path samples compared to off-path samples. Water infiltration rates were also significantly ( p = 0.002) slower for the on-path samples compared to off-path samples. These results indicate that, due to being the same on- and off-path, soil structure and texture can be excluded as a cause for the difference of bulk density and water infiltration rates. Significantly higher bulk densities and slower water infiltration indicate that soil compaction is occurring on the Hardin Hall social trail

Julien Vercueil, Les pays émergents : Brésil – Russie – Inde – Chine… Mutations économiques et nouveaux défis, Bréal, 2010.

Pays en développement, nouveaux pays industrialisés, puis pays émergents, le Tiers Monde d’Alfred Sauvy (1952) n’en finit plus de se disloquer. Dès lors qu’un pays autrefois qualifié de PED (Pays en développement) présente des taux de croissance par habitant rapide et que, plus sûrement, s’y ouvrent des marchés porteurs, la question de la nature des changements productifs, sociaux et institutionnels dont ils résultent se trouve posée. S’opère alors une sortie hautement symbolique des PED au p..