Several cassava genotypes were observed although there were few bred varieties. The wide diversity in the cassava landraces was a consequence of the action of the farmers in continuously abandoning and introducing cultivars into their system as they tried to select those cultivars that met their needs. These included extended in ground storability in remote areas, high lOOt yield, and earliness in high demographic pressure areas, low cyanogen level in specific areas where the sweet cassava type was needed, as well as their needs for pests/disease tolerance, and good processing qualities.

Economic theory, as well as empirical findings, suggest that the way in which agricultural support is provided has an influence on land markets, because payments capitalise to some degree into land values, affecting both the sale and rental price of land. This would also have effects on the transfer efficiency of support, on structural change, etc. However, the type of agricultural support is not the only factor influencing land markets.

 The goal of this research was to understand the driving forces and agents that prevent the effective application of land-use policies through plan implementation, in the fastest growing city in Africa, Bamako District.The current results yield from the field work done in November and December of  2017. The survey was done at three levels, including interviews with official actors, and questionnaires sent to with citizens and the neighborhood leaders and neighborhood development Committees (Comité de Développement de Quartier: CDQ).

Land use development and transformation in informal settlements have been taking place because informal settlements have been alternative way of providing affordable housing to low income people. Many governments use strict regulations to deny informal settlements from infrastructure services but in Tanzania informal settlements are provided with such services. This paper presents the findings on how land use transformation is taking place and publicly used spaces disappear overtime in the informal settlements, the context behind and their outcomes.

In October 2016 the Liberia Land Authority (LLA|) was legislated as the Nation’s first one-stop-shop for land management and administration. The LLA has the statutory mandate to administer land administration across the nation. The Authority is charged with supporting the development of a National Land Use and Management Agenda.

The Land Use Act of Nigeria, first enacted in 1978 was intended to simplify and standardise land administration systems across the country. It vested the authority to plan, assign and approve certificates of land ownership in the state governors, and all non-urban land in the local governments.

La région Tanger-Tetouan-Al Hoceima située au nord-ouest du Maroc a connu, dans des dernières décennies, différents travaux d’aménagement de territoire qui ont eu, certainement, un impact sur le paysage et l’écosystème de la région. La région a accueilli des infrastructures de grandes tailles telles que le port Tanger Med installé au bord du détroit Gibraltar, la ligne de train à grande vitesse reliant Tanger à Casablanca, réseaux routiers, barrages…etc. L’objectif de cet article est de cartographier les changements du paysage de la région via l’analyse diachronique de l’occupation du sol.