Avaliação da efetividade do programa cisterna a partir da abordagem dos meios de vida.

Resumo: Este estudo objetivou analisar a efetividade do Programa Cisternas utilizando abordagens teóricas orientadas aos atores, a partir do desenvolvimento de novas práticas sociais implementadas pelos agricultores beneficiários do Programa para a convivência com o Semiárido brasileiro. Elaborou-se um estudo de caso selecionando a Comunidade Sítios Areias, localizada no município de Sobral (CE). A coleta de dados foi realizada com a aplicação de questionários às famílias beneficiadas pelo Programa. O marco teórico utilizado foi a teoria da Abordagem dos Meios de Vida para caracterizar a efetividade do programa e compreender o processo de mudança social. Constatou-se que o Programa apesar de utilizar os preceitos do paradigma de desenvolvimento sustentável para a sua implantação, não possibilitou a efetividade do programa em promover modificações das práticas sociais, não revertendo a estratégia de migração das famílias, ocasionada pelo processo de desativação dos beneficiários com a agricultura. A implementação do programa não conseguiu combater a pobreza rural, mesmo proporcionando o acesso à água as famílias. Concluiu-se que a forma de intervenção exigia uma nova dinâmica para o Semiárido, bem mais complexa do que simplesmente a construção de tecnologias sociais de captação de água. Recomenda-se políticas integradas e que contribuam para a melhoria dos meios de vida das famílias, mas que também ensejem seu protagonismo e o fortalecimento de sua autonomia frente às adversidades climáticas frequentes da região. [Evaluation of the effectiveness of the Cisterns Programe according to the Sustainable Livelihood Approach]. Abstract: This study was carried out in order to analyze the effectiveness of the Cisterns Program according to the new social practices implemented by the family farmers in order to survive and live in the adverse environment of the Brazilian semiarid. The empirical space chosen was the Municipality of Sobral (CE) and the case study was the Community Areia Branca. Data was collected on all the families benefited from the Cisterns Program. The analytical theoretical framework used was the Sustainable Livelihood Approach to characterize the effectiveness of the program and the process of social change. It was found that despite using the concepts of sustainable development paradigm in the implementation of Cisterns Program, the program was not effective in promoting social changes or to reserve the migration practice as well, which is a family strategy due to deactivation of agricultural activities. The implementation of the program failed to combat rural poverty other than providing access to water. The form of intervention in the semiarid requires a new dynamic approach, which is far more complex than simply building social technologies for water storage. In order to fight poverty in the region, it is necessary to implement integrated policies able to improve life style and bring about changes in order to empower and give autonomy to the families helping them to face the adverse climatic conditions typical of the region.

Soil organic carbon, carbon stock and their relationships to physical attributes under forest soils in Central Amazonia.

The soil carbon under Amazonian forests has an important roles in global changing, making information on the soil content and depths of these stocks are considerable interest in efforts to quantify soil carbon emissions to the atmosphere.This study quantified the content and soil organic carbon stock under primary forest up to 2 m depth, at different topographic positions, at Cuieiras Biological Reserve, Manaus/ ZF2, km 34, in the Central Amazon, evaluating the soil attributes that may influence the permanence of soil carbon. Soil samples were collected along a transect of 850 m on topographic gradient Oxisol (plateau), Ultisol (slope) and Spodosol (valley). The stocks of soil carbon were obtained by multiplying the carbon content, soil bulk density and trickiness of soil layers. The watershed was delimited by using STRM and IKONOS images and the carbon contend obtained in the transects was extrapolated as a way to evaluate the potential for carbon stocks in an area of 2678.68 ha. The total SOC was greater in Oxisol followed by Spodosol and Ultisol. It was found direct correlations between the SOC and soil physical attributes. Among the clay soils (Oxisol and Ultisol), the largest stocks of carbon were observed in Oxisol at both the transect (90 to 175.5 Mg C ha-1) as the level of watershed (100.2 to 195.2 Mg C ha-1). The carbon stocks under sandy soil (Spodosol) was greater to clay soils along the transect (160-241 Mg C ha-1) and near them in the Watershed (96.90 to 146.01 Mg C ha-1).