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.

Different processes of land degradation have been the outcome in many parts of the world, having severe impacts on ecosystems and the services they provide and on human livelihoods. Land degradation is one of the key challenges facing mankind in order to achieve sustainable development, but the quest for sustainability of land management has proved to be a major challenge to most countries. This book takes the case of Iceland. It tells the remarkable story of more than century combating land degradation.

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.

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.

The food system challenges require simultaneous action across different sectors and concerted efforts of diverse players in food systems. While past efforts inclined towards boosting gricultural production, today’s focus has shifted to influencing transformative changes to the entire food systems continuum, from production and processing to marketing and distribution, using innovative solutions. Sub-Saharan Africa has been facing unprecedented challenges that affect the sustainability of food and agriculture systems, putting food and nutrition security at significant risk.

Ecosystems and Biodiversity Facts and Figures # The IPBES Report (5) stated that “around 1 million animal and plant species are now threatened with extinction, many within decades, more than ever before in human history”.

The authors briefly review how microbial biotechnology can contribute to improve activities aiming to restore degraded drylands and to combat their desertification, which are an integral part of the Sustainable Development Goal 15 of the 2030 Agenda. Microbial biotechnology offers notable promise to improve restoration actions based on the use of biocrust‐forming engineered cyanobacteria, which play key roles in maintaining ecosystem structure and functioning in drylands worldwide.

A key purpose of this publication is to provide an account of SGP’s experience working with Indigenous Peoples over the last twenty-five years. The publication celebrates past achievements and advances critical lessons that can be used in forging new partnerships with Indigenous Peoples in future programming cycles, including opportunities to employ blended finance solutions.

The five components of the toolkit - Land, Extractive Industries, Renewable Resources, Strengthening Capacity & Resource-Rich Economies - all aim to demonstrate how well-managed natural resources can prevent conflict or contribute to peace and sustainable development in war-torn nations. The linkages between natural resources and violent conflict are a critical challenge faced by many countries today.

The World Business Council for Sustainable Development has developed a comprehensive work program that can help its members better understand risks linked to inaction and opportunities for action, structuring its work program around the international discussions led by the UNCCD on LDN. In particular LDN is reflected in the WBCSD’s Action2020 targets of “restoring at least 12 million hectares per year of degraded land”, and a business solution on “Restoring Degraded Land” has been developed to provide a response to land degradation challenges and the LDN target.

Drylands occupy more than 40% of the world’s land area and are home to some two billion people. This includes a disproportionate number of the world’s poorest people, who live in degraded and severely degraded landscapes. The United Nations Convention to Combat Desertification states on its website that 12 million hectares are lost annually to desertification and drought, and that more than 1.5 billion people are directly dependent on land that is being degraded, leading to US$42 billion in lost earnings each year.

It is estimated that 20% of global land is either degraded or undergoing degradation, leading to an annual loss of 12 million hectares of productive land (UNCCD 2017). In Africa, some 715 million ha are degraded, including 65% of all arable land, 30% of all grazing land and 20% of all forests. This is due to increasing populations, poor land management, institutional challenges and climate change (Gnacadja and Wiese 2016).