Land degradation is rampant in Africa, accounting for 46% of the total land area. Land degradation at the current pace is projected to render more than half of the cultivated land in Africa unusable by 2050. Land degradation and climate change mutually reinforce each other, creating serious implications for food security, biodiversity and livelihoods in Africa. Effective early warning systems are an essential and important alert mechanism for addressing land degradation.

Monitoring land degradation (LD) to inform the sustainable development goal (SDG) 15.3.1 (\proportion of land that is degraded over total land area") is key to ensure a more sustainable future. At the moment, there are only default medium-resolution datasets available to assess LD in Tanzania. They do not reflect local characteristics and cannot help to target exposed areas spatially.

Land degradation is a critical problem around the world. Intensive rain-fed and irrigated crop and livestock systems have contributed to the degradation of land and natural resources.

Land degradation affects 24% of the world’s land surface and 1.5 billion of its people. It is the result of human activities, exacerbated by natural processes, and is closely linked to climate change and loss of biodiversity. In Africa two-thirds of arable land is degraded. In Senegal, 2.5 million hectares are degraded (CSE 2011); the central “groundnut basin” is particularly affected.

The scaling of land and water technologies has widely increased across different parts of the world; and is recognized as important for ecological systems. These technologies contribute to sustainable management of watersheds on which agriculture, food production and rural livelihoods for most developing communities depend upon.

The Sustainable Development Goals (SDGs) adopted by the United Nations General Assembly in September 2015 include a target on land degradation neutrality (LDN) (SDG 15.3). Attaining and maintaining LDN requires addressing a land governance challenge to steer land management towards avoiding, reducing and reversing land degradation.

A new Model Land Use Bill is proposed to address the lapses identified in the Nigerian Land Use Act (LUA, 1978), such as poor administrative system for lands, ownership, and the absence of community participation. This policy brief promotes a new land management structure for ease of business, to improve social and environmental protection, and to reduce land-grabbing by dispossession. The impact of land grabbing is one of many problems of social and environmental degradation, biodiversity loss and livelihoods impacted by deforestation.

Deforestation, land degradation, and unsustainable land management threaten our lives and are responsible, both directly and indirectly, for many economic, social and environmental issues. In particular, countries in Northeast Asia face the growing threats of desertification, land degradation and drought (DLDD). In China, it is estimated that “more than 40 per cent of Chinese arable land is degraded” (China Daily 2014). “The annual cost of land degradation in Mongolia is estimated at 2.1 billion United States dollars (USD)” (UNCCD, 2018).

The extensive arable land and great biodiversity present in Latin America and the Caribbean (LAC) have the potential to ensure sustenance and a good quality of life for its more than 600 million inhabitants. LAC has experienced important changes in land use. When the Europeans arrived in the 15th century, the forest cover of LAC accounted for approximately 75 per cent of the territory.

By declaring the Decade on Ecosystem Restoration, the UN has recognized that there are only 10 years left to restore the world's degraded land. Countries are striving to fight climate change by 2030 through their Paris Agreement commitments and the Sustainable Development Goals (SDGs). But in many cases, their climate and development agenda are disconnected, even though sustainability and development go hand in hand – especially for rural communities. The divide is particularly severe when it comes to restoring degraded land.

Shaping an enabling environment for Land Degradation Neutrality (LDN) calls for integrated land use planning, inclusive and environmentally sound land access and governance, major reconfigurations of current institutional settings, financial backing, and ongoing dialogue between policy-makers, practitioners, and the scientific community.

Land Degradation Neutrality is a new way of approaching land degradation that acknowledges that land and land-based ecosystems are affected by global environmental change as well as by local land use practices. Achieving the target of a land degradation neutral world encourages adaptive management during planning, implementation, and monitoring of LDN-related activities and follows the LDN response hierarchy of avoiding, reducing, and reversing land degradation.