Related items
Showing items related by metadata.
-
DocumentManual / guideSoil and Water Conservation with a focus on Water Harvesting and Soil Moisture Retention: a study guide for FFS 2003
Also available in:
No results found.In Sub-Sahara Africa, majority of the population derives its livelihood from agriculture. Smallholder agriculture accounts for 75% of agricultural production of which the majority constitutes of rainfed farming. Drought is Africa’s principal form of natural disaster which often it affects rainfed agriculture dramatically. The impact of population growth in rural areas is pushing communities into unsustainable farming practices such as burning and razing of tropical forests in order to plant crop s, planting in steep slopes, moving into fragile marginal eco-system, over cropping and over grazing – and subsequent depletion – of fragile arable land and over-utilization of ground water resources. -
ArticleJournal articleEffects of land use and land use change on soil properties in northeast rainforest landscapes of Madagascar
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Soil is a major natural resource acting as a key interface between climate and biogeochemical systems. Tavy system or slash-and-burn agriculture influences soil quality and is responsible for releases of carbon stored in the soil. This study aims to evaluate soil properties in each land use and to determine the impact of land use change on these soil properties. The study area was located in an area in the rainforest of northeastern of Madagascar. Soil samples were collected on 135 study sites composed of nine land use types including natural forest, three cropland stages, tree fallow, mixed fallow, grassland and two cash crop plantations (vanilla and coffee). Mid-Infrared Spectroscopy (MIRS) was used to estimate organic carbon (C org), total nitrogen (N tot), cation exchange capacity (CEC), soil texture and pH KCl, while available phosphorus (P Olsen), soil bulk density (BD) and soil carbon stock (SOC) for 0-30 cm and 0-100 cm were estimated with conventional methods. At plot scale and at 0-30 cm, soil in the study area relevant highly variability. Statistical analysis shows that land use change in tavy system contributes significantly to this variability with a p-value <0.001 for P Olsen, C org and N tot, p-value < 0.01 for pH KCl and p-value < 0.05 for CEC and BD. Soil nutrients (P Olsen, C org and N tot) decrease during cultivation period and increase during fallow periods. The CEC and pH KCl were stable but decline rapidly at the grassland stage. SOC for both depths declines over two periods: after the first cropland and the third cycle of cropland after deforestation. The presence of tree vegetation in cash crops (vanilla and coffee) maintains a mean value of soil properties. The results presented in this study will be useful for forest landscape management and will allow the integration of the soil pool in the accounting of the SOC flow in the implementation of REDD+. Keywords: Agriculture, Biodiversity conservation, Climate change, Deforestation and forest degradation, Landscape management ID: 3483094 -
PresentationPresentationA Case Study of Advanced Post Harvest Management in Korean: Focused on Baekmiri Fishing Community
FAO Tenure and User Rights in Fisheries
2018Also available in:
No results found.
Users also downloaded
Showing related downloaded files
No results found.