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Theme: Environmental Services

Introduction

We are strengthening the potential of smallholder agroforestry systems to generate global environmental benefits, particularly in watershed protection, biodiversity conservation and climate change mitigation and adaptation.

This involves balancing the needs for reducing poverty while enhancing food security and protecting the environment.

This year we report on restoring the watershed of the Lake Victoria basin, assessing biodiversity in the Sahel and developing new approaches to help policy makers balance the complex conservation and development issues facing tropical forests.

The four focal areas in this theme are:

  • Pro-poor strategies to enhance watershed functions. This work is refining tree management principles relating to species and their configuration in the landscape for different spatial scales and contexts, developing models to predict these effects, identify best management practices, and assess mechanisms for harmonizing individual rationality with social responsibility.
     
  • Use and conservation of biological diversity in working landscapes. This initiative aims to advance our understanding of and capacity to manage biodiversity in human-dominated landscape mosaics in the tropics for the benefit of the rural poor.
     
  • Climate change mitigation and adaptation for rural development. This research is clarifying the processes of ‘adaptation’ to climate change, and to provide incentives for smallholder farmers to adopt farming methods that contribute to climate change mitigation.
     
  • Policies to harmonize environmental stewardship and rural development. This focus is providing science-based evidence on the trade-offs and complementarities between land use for environmental services and for livelihoods of small farmers.

    Download Document (.pdf, 323KB)

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Lead Stories
The Lake Victoria Basin Initiative
At a glance

 


Lake Victoria is suffering from a super-saturation of nutrients mainly as a result of accelerating soil erosion in its catchment.

Since 1999, a joint project involving international, national and local partners has been researching the causes of the lake’s problems and developing policies and practical management strategies to address them.

Research has found that land cleared for crops initially retains its fertility for 20 years, then suffers accelerated degradation thereafter. Working with farmers, land management trials have been set up to reduce erosion and reduce water quality. There is still a long way to go, but early results are encouraging.

Download Document (.pdf, 155KB)
 
Building on traditional agroforestry
At a glance

 


People in the impoverished and semi-arid Sahel of West Africa have long experience in agroforestry in the traditional system with trees in cropland, known as the parklands.

But the system – and the biodiversity it contains - is threatened by outdated policies and ever-increasing pressure on trees and land resources.

A study of that biodiversity is identifying community groups that can help promote it – and agroforestry.

Download Document (.pdf, 163KB)
 
The Alternatives to Slash-and-Burn matrix
At a glance

 


Reconciling conflicting interests in tropical rainforests is not easy, and one result is continued massive worldwide deforestation.

Long term environmental needs clash with pressing short-term human needs and policy makers must achieve a difficult balance.

The ‘Alternatives to Slash and Burn’ program has developed a matrix to plot these conflicting interests and outcomes to help advise policymakers. Testing over the last eight years across the world has shown its practical utility in identifying tradeoffs.

In many cases a middle path of development involving agroforestry provides a suitable option for reconciling environmental and economic needs, but no single land-use should predominate to ensure environmental health and human welfare.

Download Document (.pdf, 141KB)
 
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Other Highlights
Gauging the planet’s health - the ASB is part of the Millennium Ecosystem Assessment

The Millennium Ecosystem Assessment is the most comprehensive, high-powered and ambitious study ever undertaken of the relationship between the world’s ecosystems and human well-being. The first results will be out this year. The Alternatives to Slash-and-Burn, a system-wide programme of the CGIAR was chosen as the only sub-global assessment working across regions in the tropics.

Contact: asb@cgiar.org | Download Document (.pdf, 182KB)
Sharing in Asia – spreading the costs and benefits

Pristine montane springs, scenic landscapes, rich biodiversity and carbon sinks. These are just some of the riches of upland Asia. However, the costs – and rewards – that ride on these benefi ts are lopsided to the disadvantage of the very guardians of this treasure trove — the poor upland dwellers in the watersheds. The paradox can be redressed — based on sound science and new networks — for win-win outcomes that balance environmental, equity and development concerns.

Contact: f.chandler@cgiar.org
Farm or Forest? Changing forest definitions will encourage investment by farmers

In Southeast Asia, land-use regulations are often based on forest definitions that disenfranchise agroforesters, threaten livelihoods and lead to both plantations and smallholders failing to meet their objectives. Removal or revision of such regulations to give smallholders secure land tenure would encourage millions of farming families to increase investment in improving land productivity.

Contact: c.fay@cgiar.org | Download Document (.pdf, 167KB)
Improving livelihoods for livestock owners around Lake Victoria

Many people in the Lake Victoria basin rely on farm animals to counter increasing poverty and the problems caused by degraded land around the lake and the water in it. The Centre and its partners are building on studies by the Livestock Information Research Exchange Programme to satisfy the demand for information to improve the welfare of the livestock - and the people who rear them.

Contact: b.swallow@cgiar.org
Combining strengths in the Amazon Initiative – a new consortium for sustainable development

Over the last 25 years, 50 million hectares of the Brazilian Amazon rainforest has been cleared, much of it for unsustainable development. Newly opened pastures quickly degrade and over 20 million hectares have already been abandoned. A consortium of major research and development institutions has been formed to address these issues by developing better policies and technologies for sustainable land management.

Contact: r.porro@cgiar.org | Download Document (.pdf, 197KB)
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INTERNATIONAL CENTRE FOR RESEARCH IN AGROFORESTRY