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ecosystems
Land Degradation Threatens Billions of Lives Worldwide, Warns UN Food Agency
"Sustainable land management requires enabling environments that support long-term investment, innovation, and stewardship," said the head of the Food and Agriculture Organization.
Nov 03, 2025
A report published Monday by a United Nations agency revealed that nearly 1 in 5 people on Earth live in regions affected by failing crop yields driven by human-induced land degradation, “a pervasive and silent crisis that is undermining agricultural productivity and threatening ecosystem health worldwide."
According to the latest UN Food and Agriculture Organization (FAO) State of Food and Agriculture report, "Today, nearly 1.7 billion people live in areas where land degradation contributes to yield losses and food insecurity."
"These impacts are unevenly distributed: In high-income countries, degradation is often masked by intensive input use, while in low-income countries, especially in sub-Saharan Africa, yield gaps are driven by limited access to inputs, credit, and markets," the publication continues. "The convergence of degraded land, poverty, and malnutrition creates vulnerability hotspots that demand urgent, targeted and, comprehensive responses."
#LandDegradation threatens land's ability to sustain us. The good news: Reversing 10% of degraded cropland can produce food for an additional 154 million people.
▶️Learn how smarter policies & greener practices can turn agriculture into a force for land restoration.
#SOFA2025 pic.twitter.com/8U3yQk9lX4
— Food and Agriculture Organization (@FAO) November 3, 2025
In order to measure land degradation, the report's authors compared three key indicators of current conditions in soil organic carbon, soil erosion, and soil water against conditions that would exist without human alteration of the environment. That data was then run through a machine-learning model that considers environmental and socioeconomic factors driving change to estimate the land’s baseline state without human activity.
Land supports over 95% of humanity's food production and provides critical ecosystem services that sustain life on Earth. Land degradation—which typically results from a combination of factors including natural drivers like soil erosion and salizination and human activities such as deforestation, overgrazing, and unsustainable irrigation practices—threatens billions of human and other lives.
The report notes the importance of land to living beings:
Since the invention of agriculture 12,000 years ago, land has played a central role in sustaining civilizations. As the fundamental resource of agrifood systems, it interacts with natural systems in complex ways, influencing soil quality, water resources, and biodiversity, while securing global food supplies and supporting the achievement of the Sustainable Development Goals (SDGs). Biophysically, it consists of a range of components including soil, water, flora, and fauna, and provides numerous ecosystem services including nutrient cycling, carbon sequestration, and water purification, all of which are subject to climate and weather conditions.
Socioeconomically, land supports many sectors such as agriculture, forestry, livestock, infrastructure development, mining, and tourism. Land is also deeply woven into the cultures of humanity, including those of Indigenous peoples, whose unique agrifood systems are a profound expression of ancestral lands and territories, waters, nonhuman relatives, the spiritual realm, and their collective identity and self-determination. Land, therefore, functions as the basis for human livelihoods and well-being.
"At its core, land is an essential resource for agricultural production, feeding billions of people worldwide and sustaining employment for millions of agrifood workers," the report adds. "Healthy soils, with their ability to retain water and nutrients, underpin the cultivation of crops, while pastures support livestock; together they supply diverse food products essential to diets and economies."
The report recommends steps including reversing 10% of all human-caused land degradation on existing cropland by implementing crop rotation and other sustainable management practices, which the authors say could produce enough food to feed an additional 154 million people annually.
"Reversing land degradation on existing croplands through sustainable land use and management could close yield gaps to support the livelihoods of hundreds of millions of producers," FAO Director-General Dongyu Qu wrote in the report’s foreword. "Additionally, restoring abandoned cropland could feed hundreds of millions more people."
"These findings represent real opportunities to improve food security, reduce pressure on natural ecosystems, and build more resilient agrifood systems," Qu continued. "To seize these opportunities, we must act decisively. Sustainable land management requires enabling environments that support long-term investment, innovation, and stewardship."
"Secure land tenure—for both individuals and communities—is essential," he added. "When land users have confidence in their rights, they are more likely to invest in soil conservation, crop diversity and productivity."
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Landmark Declaration of Rights Safeguards Biobío River in Chile
"A paradigm shift is necessary," said an advocacy group. "Let's recognize now that the Biobío River has value in itself."
Sep 25, 2024
Biodiversity and Rights of Nature defenders celebrated a "historic moment" on Wednesday as communities in Chile joined advocacy groups in launching the first Declaration of Rights protecting an ecosystem in the South American country, with the document aiming to safeguard "the rights of Chile's Biobío River against mounting environmental threats."
Communities located along the river—the second-longest in the country—joined environmental advocates, Indigenous tribes including the Pehuenche and Lafkenche people, and scientists in several months of "participatory dialogues" to determine how to protect the Biobío River from industrialization and other threats to the countless species it supports and to the river itself.
International Rivers, a group dedicated to protecting free-flowing rivers around the globe, said that the "cornerstone of the declaration lies in its profound acknowledgment of the intrinsic value held by the Biobío River" and its right to flow unimpeded by hydroelectic projects, disruptions to the riverbed, and other activities.
The Declaration of Rights affirms the river's right to:
- Adequate flow to sustain the health of surrounding ecosystems;
- Unhindered flow and connectivity from the mountains to the sea;
- Preservation of structural integrity, vital functions, and evolutionary processes;
- Safeguarding native biodiversity; and
- Ongoing regeneration and restoration efforts, fostered through enduring partnerships with riverside communities.
According to International Rivers, major concerns of riverside communities and Indigenous people who have deep cultural connections to the river include ongoing hydroelectric projects including the Rucalhue and Frontera Hydroelectric Plants, which would join three that have already been completed.
Another proposed plant is in the planning stages, and like the others would "jeopardize the river's flow and water quality, resulting in loss of native biodiversity and affecting fish migration and ultimately leading to irreversible damage," said International Rivers.
The riverbed structure and water quality have also suffered from both legal and illegal extraction of boulders, rubble, gravel, and sand that have been taken for use in construction, and ecosystem defenders have warned about the negative impact of proposed road infrastructure projects in the Biobío region.
Projects including the Concesión Vial Puente Industrial, a viaduct and road connection, and road projects such as Costa Mar and Costanera "would cause the total destruction of the wetlands of these localities," said the group.
"These developments underscore the inadequacy of the national legal framework in ensuring the protection of riparian ecosystems and citizen participation, lacking international standards that prioritize sustainable development in harmony with nature," said International Rivers.
Alejandro Gatica, a member of the community group Defensa Ribera Norte Chiguayante, said the Declaration of Rights "revalues and protects the water network," which is "in an environmental crisis due to extractivist actions on its banks, with uncontrolled logging, lack of protection of its wetlands, and the coastal project that threatens to intervene in its structure."
In a video about the Declaration of Rights, International Rivers said the Biobío "has been sadly silenced" by industrialization, despite the crucial support it provides to "multiple ecosystems and countless riverine and terrestrial species, many of them endemic," in addition to "water security and food sovereignty of its riparian communities for whom it is a crucial element in agriculture, fishing, and tourism."
"When we deny its right to flow we are silencing it. When we pollute, exploit, degrade, and urbanize it we are silencing it. When we block its access and connection to communities we are silencing it," said the group. "A paradigm shift is necessary. Let's recognize now that the Biobío River has value in itself."
The launch of the declaration "signifies a pivotal moment," said Monti Aguirre, Latin America program director of International Rivers.
"This initiative underscores our shared dedication to preserving this vital ecosystem amidst mounting destructive pressures," said Aguirre. "The well-being of the Biobío River, along with that of surrounding communities, is imperiled by the pressures imposed on its ecosystem, stemming from established dams such as Ralco, Pangue, and Angostura, as well as proposed hydro-projects and extractive activities."
The recognition of the waterway's rights is "a bridge that not only guarantees the inherent value of rivers and natural entities, but is also key to the full realization of the human rights of their communities," said Constanza Prieto Figelist, Latin America director for Earth Law Center.
The international Rights of Nature movement has celebrated several victories in South America in recent months, including a court decision in Peru that granted rights to the Marañón River and a ruling in Ecuador that found pollution violated the rights of the Machángara River.
"The Rights of Nature favor the incorporation of more powerful standards of environmental protection and citizen participation in environmental issues through, for example, the figure of representatives or guardians of nature," she said. "Likewise, comparative experience shows that they are a powerful instrument for combating activities that favor biodiversity loss or climate change."
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Scientists Who First Identified Threat of Microplastics Say World Must Now Act
"During the 20 years since our first study, the amount of plastic in our oceans has increased by around 50%, only further emphasizing the pressing need for action," said one leading researcher.
Sep 20, 2024
Some of the key scientists who first informed the world of the potential damage being done to natural systems by microplastics are now calling for world leaders to take decisive action to curb the introduction of these polluting materials into the environment—and they hope the looming United Nations treaty process on plastics can be a key vehicle for progress.
Alongside a new scientific review published cataloging the growing body of research on microplastics—defined as plastic particles smaller than 5 millimeters and "composed of polymers together with functional additives as well as other intentionally and unintentionally added chemicals"—the international group of scientists says concerted actions must be taken, including bans on certain materials and a focus on plastic pollution mitigation that puts less emphasis on consumer habits and recycling efforts by keeping microplastics out of the supply chain "in the first place."
According to the abstract of the review, published Thursday in the journal Science:
Twenty years after the first publication using the term microplastics, we review current understanding, refine definitions and consider future prospects. Microplastics arise from multiple sources including tires, textiles, cosmetics, paint and the fragmentation of larger items. They are widely distributed throughout the natural environment with evidence of harm at multiple levels of biological organization. They are pervasive in food and drink and have been detected throughout the human body, with emerging evidence of negative effects. Environmental contamination could double by 2040 and widescale harm has been predicted. Public concern is increasing and diverse measures to address microplastics pollution are being considered in international negotiations. Clear evidence on the efficacy of potential solutions is now needed to address the issue and to minimize the risks of unintended consequences.
Professor Richard Thompson of Plymouth University, who co-authored that first scientific study and coined the term microplastics just two decades years ago, says researchers now have more than enough evidence to show world leaders that serious action must be taken to curb the use of plastics, with special attention to the minuscule and microscopic forms of the material that are increasingly being found polluting ecosystems—both on land as well as in the sea—and embedded within living organisms, including humans.
"There are still unknowns, but during the 20 years since our first study, the amount of plastic in our oceans has increased by around 50%, only further emphasizing the pressing need for action," Thompson said in a statement put out by Plymouth.
In the statement, the university noted:
Since the publication of the first study in 2004, an estimated 7,000 research studies have been conducted on microplastics, providing considerable evidence in their sources and impacts as well as potential solutions.
Microplastics have been found on every corner of the planet, in more than 1,300 aquatic and terrestrial species, in the food and drink we consume, and in multiple tissues and organs of the human body.
With emissions of microplastics to the environment estimated to be up to 40 megatons per year, a number that could double by 2040, predictions indicate the potential for widescale environmental harm moving into the next century.
The research details how microplastics demand an international response due to their transitory nature. While they enter the environment in various ways—whether from direct release as fibers into the air from textiles or dust, discharged through water systems via runoff or sewage drains, or via breakdown or fragmentation—once discarded, the study says, "microplastics can travel far from their point of entry and are not constrained by national boundaries highlighting the importance of actions at a global level."
Professor Sabine Pahl, who teaches Urban and Environmental Psychology at the University of Vienna and is an honorary professor at the University of Plymouth, said, "Plastic pollution is completely caused by human actions. That's why we need research on perceptions of risks and benefits of plastic as well as other drivers of policy support and change, integrating a social science perspective."
With the next round of talks in the UN's Plastic Pollution Treaty set for November, the researchers said the negotiations offer a "tangible opportunity" for nations to act on this issue. "In our view," they wrote, "science will be just as important guiding the way toward solutions as it has been in identifying the problems."
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