Land degradation – the reduction or loss of the productive potential of land – is a global challenge. Over 20% of the Earth’s vegetated surface is estimated to be degraded, affecting over 1.3 billion people, with an economic impact of up to US$10.6 trillion. Land degradation reduces agricultural productivity and increases the vulnerability of those areas already at risk of impacts from climate variability and change.

The negative consequences of human actions have brought our world and our future to a dangerous crossroads: will we be able to avert the worst impacts of climate change? How can we stop and reverse the loss of fertile soil, biodiversity, and other natural capital that supplies all our food and other basic needs? Where are the jobs for millions of unemployed young people?

Many drylands in the world suffer problems of land degradation and desertification derived from human activities and exacerbated by drought. Too often these degradation processes have been endured by the ecosystems for a long time, and, according to forecasts of climate change, are likely to worsen in the future. Ecological restoration combined with adaptive management can be effective tools in response to this environmental and socioeconomic problem.

Almost one-quarter of the world’s land area has been degraded over the past 50 years because of soil erosion, salinization, peatland and wetland drainage, and forest degradation. The resulting damage, in terms of lost ecosystem goods and services, costs the world an estimated US$6.3 trillion a year. Almost a quarter of the world’s land area has been degraded over the past 50 years.
This is the result of soil erosion, salinization, peatland and wetland drainage, and forest degradation.

You cannot put a price tag on nature — but the economic numbers point to its protection,” said Anthony Waldron, the lead author of the report and researcher focused on conservation finance, global species loss and sustainable agriculture.

Land degradation is a widespread crisis, destabilizing nations and communities on a global scale. To be clear, food will be less plentiful (and thus more expensive) unless responsible land management and res- toration is given priority on the international political agenda. The commitment to halt and reverse land degradation will undoubtedly feature prominently in post-2015 development and climate agendas.

When the UN Convention to Combat Desertification was created at the Rio Earth Summit over 25 years ago, it became the only international convention dedicated to protecting, managing and restoring our land. The environmental benefits of that work are already well documented, particularly when it comes to the inextricablelinks with climate change and biodiversity. But this book goes much further by highlighting the impact on the wellbeing of over three billion people – nearly half the world’s population – who are directly affected by land degradation.

A new post-2015 development agenda demands a new vision and a responsive framework with

Why is it so important to restore degraded landscapes? It’s actually very simple.
We rely on healthy ecosystems to provide us with our food, water, clean air, climate stability, social and economic wealth; even our happiness and well-being. We only have to look at history to see the devastating consequences of not valuing or understanding ecosystems: whole civilizations have vanished after overexploiting their natural resources.

Land is of multi-dimensional character. It is multi-scale, multi-functional, multi-sectorial, multi-actor based: it needs people from practice and research to interact as equal partners to make sense of research for sustainable land management. The kind of research needed to deal with this complexity and these challenges we term implementation-oriented research. With its many practical examples, this book explores alternatives to the often perceived ‘either – or’ choice between agricultural intensification on the one hand, and expansion of arable land on the other.

Land restoration has tremendous potential to help the world limit climate change and achieve its aims for sustainable development. In its latest study, the International Resource Panel finds positive spin-offs to support all 17 Sustainable Development Goals agreed to by the world’s nations as part of the 2030 Agenda for Sustainable Development. While other reports have focused on a subset of the SDGs, this report has intentionally considered all of them, and has done so by inviting a large number of diverse authors to participate in the process.

In a world grappling with the challenges of food insecurity, climate change, landscape degradation, and rural poverty, regreening offers a path forward, especially in dryland areas. The transformation of degraded landscapes—restoring productivity and increasing resilience through the widespread adoption of agroforestry and sustainable land management practices—can deliver food, climate, and livelihood benefits.
Table of contents:
Part I. Introduction
Part II. How and Where is Regreening Happening?
Part III. The Impacts Of Regreening