This review explores environmental change in northern and south-central Kenya, roughly covering three decades from the 1960s to the 1990s. The report answers three questions:has vegetation change occurred in these districts?if vegetation change has occurred, why and how has this happened?what are the trends for livestock populations?The article concludes that:rangeland sites have been fundamentally altered by woody encroachment over the past 40 years.
Résultats de la rechercheShowing items 1 through 9 of 1155.
Library Resourcejanvier, 1999Kenya, Afrique sub-saharienne
Library Resourcejanvier, 2007Afrique sub-saharienne
This thesis, is based on the follwing legs of argument, as follows:
The pastoral human population is growing at about 2.5% per year
A certain minimum number of livestock are needed to support these humans as pastoralists, even at very low levels of welfare.
The maximum total pastoral herd size is limited by the amount of livestock feed available. Where numbers temporarily exceed this limit they soon die back.
Library Resourcejanvier, 2002
The key messages of this presentation are:
Increasing competition for water severely limits irrigation and constrains food production
Slow progress in extending access to safe drinking water; water quality will decline; amount of water for environmental uses will be inadequate
Moderate worsening in current water policies and investments could lead to full-blown water crisis
Fundamental changes in water management and policy can produce a sustainable future for water and food
Library Resourcejanvier, 2014
This publication examines people, politics and the environment and their relation to drinking water supplies in rural areas. Water, Sanitation and Hygiene (WASH) has become a well-established developmental sector into which domestic water naturally falls. However, efforts to improve rural water supply services may benefit from more inter-disciplinary collaboration.
Library Resourcejanvier, 2005Myanmar, Asie orientale, Océanie
Coinciding with the launch of a new international campaign calling for TOTAL’s withdrawal from Burma, this report gathers together much of the available evidence relating to TOTAL’s role in fuelling the oppressive dictatorship in Burma.
Library Resourcejanvier, 2002
The domestic water sector has focused for many years on benefiting health by improving supply. Can more and better water improve people’s health? Does improved water supply by government and agencies really meet the basic needs of the poor? Or should water be treated as an economic good?
Library Resourcejanvier, 2006Europe, Afrique sub-saharienne, Amérique latine et Caraïbes, Asie occidentale, Amérique septentrionale, Afrique septentrionale, Asie orientale, Océanie, Asie méridionale
This report highlights the potentially significant impacts on the hydrologic cycle and the importance of considering secondary effects, particularly with regard to water, resulting from the widespread adoption of global climate change mitigation measures. It is recommended that the implicit hydrologic dimensions of climate change mitigation should be more formally articulated within the international environmental conventions, and recognized within future UNFCCC negotiations on the CDM-AR provisions.
Library Resourcejanvier, 2002Indonésie, Asie orientale, Océanie
Joint report from Forest Watch Indonesia, World Resources Institute and Global Forest Watch. It provides a detailed analysis of the scale and pace of change affecting Indonesia’s forests. The report concludes that the doubling of deforestation rates in Indonesia is largely the result of a corrupt political and economic system that regards natural resources as a source of revenue to be exploited for political ends and personal gain.
Library Resourcejanvier, 1997
Forests potentially contribute to global climate change through their influence on the global carbon (C) cycle. They store large quantities of C in vegetation and soil, exchange C with the atmosphere through photosynthesis and respiration, are sources of atmospheric C when they are disturbed, become atmospheric C sinks during abandonment and regrowth after disturbance, and can be managed to alter their role in the C cycle. The world's forest contain about 830 Pg C (1015 g) in their vegetation and soil, with about 1.5 times as much in soil as in vegetation.
Library Resourcejanvier, 2010Pays-Bas
Studies on the impact of climate change and sea level rise usually rake climate scenarios as their starting point. To support long-term water management planning int he Netherlands, this paper starts at the opposite end of the effect chain. The study refers to three aspects of water management:
drinking water supply
protection of the Rotterdam harbour.
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