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Displaying 1297 - 1308 of 2139

Runoff and sediment monitoring in an agricultural watershed in the Ethiopian Highlands

Reports & Research
Dezembro, 2013
Etiópia
África
África Oriental

Land degradation due to soil erosion is a major issue in the Ethiopian Highlands. Deforestation leads to ongoing gully erosion during the rainy season (June to September) and thus the hydrology of a watershed changes as dense gully networks cause direct drainage of rain water. To better understand watershed scale gully processes in the Ethiopian Highlands, three gauging stations were installed in the 56 km2 large Gumara-Maksegnit catchment in the northern Amhara region, to monitor discharge and sediment load in the gullies during rainy season.

Rwanda Dairy Competitiveness Program II: Efficiency gains in dairy production systems decrease GHG emission intensity

Policy Papers & Briefs
Novembro, 2016
Ruanda
África
África subsariana

? The Rwanda Dairy Competitiveness Program II

(RDCP) was estimated to have resulted in a

strong decrease in the GHG emissions intensity

of milk production, defined as the GHG

emissions per unit (liter) of milk produced.

Extensive cattle production systems reduced

their GHG emission intensity by an estimated -

4.11 tCO2e per 1000 l of milk (-60%), while

intensive production systems reduced their

intensity by an estimated -1.7 tCO2e/1000 l (-

47%). The decrease in GHG emission intensity

Scaling point and plot measurements of greenhouse gas fluxes, balances, and intensities to whole farms and landscapes

Journal Articles & Books
Dezembro, 2016

Measurements of nutrient stocks and greenhouse gas (GHG) fluxes are typically collected at very local scales (<1 to 30 m2) and then extrapolated to estimate impacts at larger spatial extents (farms, landscapes, or even countries). Translating point measurements to higher levels of aggregation is called scaling. Scaling fundamentally involves conversion of data through integration or interpolation and/or simplifying or nesting models. Model and data manipulation techniques to scale estimates are referred to as scaling methods.

Sediment trap efficiency of paddy fields at the watershed scale in a mountainous catchment in northwest Vietnam

Journal Articles & Books
Dezembro, 2016
Vietnam
Sudeste Asiático

Composite agricultural systems with permanent maize cultivation in the uplands and irrigated rice in the valleys are very common in mountainous southeast Asia. The soil loss and fertility decline of the upland fields is well documented, but little is known about reallocation of these sediments within the landscape. In this study, a turbidity-based linear mixed model was used to quantify sediment inputs, from surface reservoir irrigation water and from direct overland flow, into a paddy area of 13 ha. Simultaneously, the sediment load exported from the rice fields was determined.

Scaling Up Climate Services for Farmers in Africa and South Asia: Workshop Report

Reports & Research
Fevereiro, 2013
Senegal
África Ocidental
África
Ásia Meridional

This report summarizes the proceedings of the workshop “Scaling Up Climate
Services for Farmers in Africa and South Asia,” held in Saly, Senegal on December
10-12, 2012. The workshop brought together more than 100 experts from 30 countries
and roughly 50 institutions to grapple with the challenge of supporting vulnerable
farming communities through the production, communication, delivery and evaluation
of effective agrometeorological information and advisory services; and to identify
practical actions to address those challenges at scale.

Seed systems of rice and finger millet in Nepal, between formality and informality

Dezembro, 2016
Nepal

In Nepal, more than 90% of cereal seed flows from informal systems and there are regions and groups of farmers that are not connected at all to any seed networks with external seed supply. Nepal's agricultural policies and formal institutions are promoting the development of the formal seed system. However, knowledge gaps exist on the opportunities and challenges for smallholder farmers when formal seed systems are becoming accessible.

Scaling up climate services for farmers: Mission Possible. Learning from good practice in Africa and South Asia

Reports & Research
Setembro, 2014
Índia
Mali
África
Ásia
Ásia Meridional
África Ocidental

This report presents lessons learned from 18 case studies across Africa and South Asia that have developed and delivered weather and climate information and related advisory services for smallholder farmers. The case studies and resulting lessons provide insights on what will be needed to build effective national systems for the production, delivery, communication and evaluation of operational climate services for smallholder farmers across the developing world.

Scaling up index insurance for smallholder farmers: Recent evidence and insights

Reports & Research
Janeiro, 2015
Ruanda
Etiópia
Índia
Quênia
Mongólia
Senegal
Tanzania
África Ocidental
África
Ásia
Ásia Central
África Oriental
Ásia Meridional

This report explores evidence and insights from five case studies that have made significant recent progress in addressing the challenge of insuring poor smallholder farmers and pastoralists in the developing world. In India, national index insurance programmes have reached over 30 million farmers through a mandatory link with agricultural credit and strong government support. In East Africa (Kenya, Rwanda and Tanzania), the Agriculture and Climate Risk Enterprise (ACRE) has recently scaled to reach nearly 200,000 farmers, bundling index insurance with agricultural credit and farm inputs.

Scaling up Sustainable Agriculture Land Management in Bungoma County, Kenya

Policy Papers & Briefs
Fevereiro, 2015
Quênia
África
África Oriental

Agricultural landscapes must provide food, fiber and energy to

a growing population in a changing climate, while potentially

serving as instruments for climate change mitigation. Agriculture

is the backbone of the Kenyan economy, contributing approximately

25% of the GDP annually and employing more than 75%

of the population (The Government of Kenya 2010). The development

of agriculture is also important for poverty reduction since

most of the vulnerable groups, like pastoralists, the landless, and

Seasonal response of grasslands to climate change on the Tibetan plateau

Journal Articles & Books
Novembro, 2012
Ásia

Shortening of the growing season despite a longer thermally favorable period implies that vegetation on the Tibetan Plateau is unable to exploit additional thermal resources availed by climate change. Ecosystem composition may no longer be well attuned to the local temperature regime, which has changed rapidly over the past three decades. This apparent lag of the vegetation assemblage behind changes in climate should be taken into account when projecting the impacts of climate change on ecosystem processes.

Safe wastewater reuse: a call for sanitation safety plans.

Conference Papers & Reports
Dezembro, 2012

The publication of the third edition of the WHO Guidelines for Drinkingwater Quality (WHO, 2004) introduced the concept of integrated, preventive risk management through water safety plans (WSPs) as a means to put into operation the principles, standards, norms and best practice proposed by the Guidelines. The WHO suggests applying the same concept to support the implementation and operationalization of their Guidelines for the Safe Use of Wastewater, Excreta and Greywater in Agriculture and Aquaculture (WHO, 2006) which follow the same principles of HACCP and health-based targets.

Secondary forests in swidden agriculture inthe highlands of Thailand

Journal Articles & Books
Dezembro, 2001
Tailândia

Swidden farming is the main agent of conversion of primary forests to secondary forests in the highlands of mainland Southeast Asia, but there is a deterioration and decline of the practice with land use intensification. The population growth in northern Thailand has forced lowland farmers practising permanent wet rice cultivation to turn to short rotation swidden in the foot hill zone. Highland swidden agriculturists are adopting more intensive forms of swidden or are shifting to permanent farming.