Net change analysis of major cash and food crops based on three time steps Landsat data —, — and — and quantitative analysis from participatory survey data with farmers and landowners are used. Study underlines poor agricultural systems and cassava farming as major impediments to alarming forest losses between — Significant net loss in forests cover by
Degraded soils have a health status such, that they do not provide the normal goods and services of the particular soil in its ecosystem. These definitions, which follow largely the LADA definition of land degradation, are important to capture the complexity of the degradation processes and their subjective evaluation by different stakeholders in soil and land.
Soil erosion is a natural process in mountainous areas, but is often made much worse by poor management practices. Prevention implies the use of conservation measures that maintain natural resources and their environmental and productive Mitigation is intervention intended to reduce ongoing degradation.
This comes in at a stage when degradation has already begun. The main aim here is to halt further degradation and to start improving resources and their functions. Mitigation impacts tend to be noticeable in the short to medium term: Rehabilitation is required when the land is already degraded to such an extent that the original use is no longer possible and the land has become practically unproductive.
Here longer-term and often more costly investments are needed to show any impact. Soil degradation and improvement changes in space and time as a function of the use to which the land is put and is also dependent on the different, and sometimes contradictory, objectives of the stakeholders.In areas where these practices are prevalent, tree planting to produce fuel wood and programs to increase efficient use of fuel wood might be more effective in arresting land degradation than conservation measures solely designed to reduce soil erosion.
Worldwide perspectives of land degradation and desertification State-of the Art techniques in erosion measurements Ancient and modern knowledge in soil conservation Links environmental conservation with sustainable development Analyse past and present climate change effects on ecosystems.
Soil conservation is the preventing of soil loss from erosion or reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination. Slash-and-burn and other unsustainable methods of subsistence farming are practiced in some lesser developed areas.
By , combat desertification, restore degraded land and soil, including land affected by desertification, drought and floods, and strive to achieve a land degradation-neutral world By , ensure the conservation of mountain ecosystems, including their biodiversity, in order to enhance their capacity to provide benefits that are essential.
Land degradation is a process in which the value of the biophysical environment is affected by a combination of human-induced processes acting upon the land.
It is viewed as any change or disturbance to the land perceived to be deleterious or undesirable. . Continuous use of land over a long period of time without taking appropriate measure to conserve and manage has resulted in land degradation. Measures to solve problem of land degradation.