Articles tagged with Desertification
Climate researchers have discovered a significant increase in neighborhood-level hurricane warnings, widespread wildfires in the US, and unprecedented changes in Earth's energy budget. These findings suggest that greenhouse gases are driving these trends, with smoke and fire-related carbon emissions rising due to increased aridity.
Restoring ecosystem function in Europe's drylands can reverse desertification by re-establishing natural water redistribution processes. Functional restoration focuses on rebuilding simple structures to restore these networks, recover vital ecosystem services and support major policy frameworks.
A 40-year greening project in China's Taklamakan Desert has successfully reduced atmospheric carbon dioxide levels and increased solar-induced fluorescence, indicating a measurable carbon sink. The project demonstrates the potential of afforestation to mitigate climate change, despite being only a small dent in global emissions.
Key findings include halting food waste by 75% and restoring half of degraded lands by 2050; the authors recommend shifting agricultural subsidies towards sustainable smallholder farms and implementing land-based taxes or tariffs to reward sustainable low-impact farming.
The book examines biodiversity, ecology, and conservation strategies across Mexico's deserts, focusing on the Baja California Peninsula, Chihuahuan Desert, Sonoran Desert, and Tehuacán-Cuicatlán Valley. Key findings include the ecological roles of natural products and traditional medicinal plants.
A comprehensive report cataloging the most widespread and damaging drought events since 2023 reveals food, water, energy crises and human tragedies. The 'Drought Hotspots Around the World 2023-2025' report underscores the need for systematic monitoring of drought's impacts on lives, livelihoods, and ecosystems.
A long-term shift towards drier conditions is reshaping landscapes and livelihoods globally, affecting 40% of Earth's land and 2.3 billion people. The research highlights solutions to adapt to a future where water is no longer guaranteed, including smarter irrigation strategies, data analytics, and restoring degraded land.
Smallholder farmers in Western Kenya support native-tree restoration for improved crop yields, climate resilience, and food security. However, concerns about increasing tree diversity attracting wildlife and the need for locally designed solutions remain.
The Xinjiang Institute of Ecology and Geography has launched several initiatives to combat desertification, including a Green Technology Park in Mauritania and the African Great Green Wall initiative. These efforts aim to address livelihood crises and improve economic development in Africa.
The UN reports that over 77.6% of the world's land experienced drier conditions in recent decades, with drylands expanding by nearly a third larger than India. This trend is driven by human-caused climate change and has dire implications for agriculture, ecosystems, and people living in affected areas.
A new UN report highlights the economic benefits of investing in sustainable land and water management to reduce drought costs. The study estimates that nature-based solutions can generate up to $10.1 trillion in business value by 2030, while creating millions of jobs.
The report charts a course correction for how the world grows food and uses land, highlighting the central role of land in maintaining Earth's stability. Land degradation is undermining the planet's capacity to support humanity, with seven out of nine planetary boundaries negatively impacted by unsustainable land use.
Oasis growth and loss have been tracked globally over 25 years, with significant increases in Asia due to intentional expansion. However, desertification has led to a substantial loss of approximately 134,000 square kilometers of oasis land worldwide.
A study reveals that restoration strategies in the semi-arid region of Brazil have led to a return of native ecosystem services by improving soil microbial properties. The techniques, including removal of cattle and cultivation of cover crops, have resulted in higher biodiversity and crop yields.
Research reveals that spatial patterns in dryland vegetation are critical for adapting to changing environmental conditions. The study provides empirical evidence supporting the role of self-organized clusters in maintaining ecosystem function and health.
A research team studied the source of hazardous March and April 2023 dust storms in China, finding that Mongolia is the main dust source affecting northern China's weather. The team used advanced models and machine learning techniques to forecast dust events, providing a reference for addressing global dust storm hazards.
Scientists analyzing fossil pollen and geochemical data reveal that Mediterranean forests are susceptible to transformation into steppes under natural conditions. Rising atmospheric CO2 levels may lead to a significant decrease in precipitation, triggering such a shift in the near future if protection measures are not taken.
Heads of State and Government meeting at the United Nations' global conference on land called for immediate action to stem life and livelihood losses due to desertification, land degradation, and drought. The Abidjan Call urges prioritizing drought relief and committing to achieving land degradation neutrality by 2030.
The UN Convention to Combat Desertification's Global Land Outlook 2 report warns that up to 40% of the planet's land is degraded, threatening half of humanity and roughly 1/2 of world GDP. The report offers hundreds of practical ways to restore land and ecosystem health.
A new study reveals that the giant camel Camelus knoblochi lived in Mongolia with anatomically modern humans until climate change led to its extinction. The species likely competed with its critically endangered relative, the Bactrian camel, for resources.
The Mediterranean region has the highest soil erosion rates in Europe, with severe salinisation problems and low levels of soil organic matter. The study recommends a coordinated network to investigate soil biodiversity and assess its trends to prevent future degradation.
A study by Politecnico di Milano reveals that large-scale land acquisitions for agriculture lead to increased water scarcity, impacting local users. The research analyzed 160 acquisitions and found that 105 resulted in competition for water, often at the expense of local communities.
Researchers used ancient climate reconstructions to improve understanding of climate system thresholds and predict abrupt changes. By applying paleoclimate information to Earth System models, they demonstrated improved accuracy in simulating past abrupt climate events.
A geologist from the University of Texas at Arlington is investigating the origin and climate importance of loess, a sediment formed by wind-blown dust, in Montana, Wyoming, and northeast Colorado. Her research aims to identify the sediment's source, when it appeared, and the climate changes that caused it to form.
Warming temperatures are causing increased aridity across the western United States, leading to declining river flows, tree death, and agricultural stress. Climate scientists warn that this trend will continue eastward, resulting in more frequent and severe dry spells, flash droughts, and interannual droughts.
Research suggests that high-latitude vegetation growth can impede the spread of midlatitude deserts by altering regional energy balances. The study found significant retreat of southern midlatitude desert boundaries and expansion of polar ice belts and low-latitude vegetation zones.
A new study published in Geology has determined the ages of Navajo Sandstone deposits, providing a timeline of desertification that occurred during the Early Jurassic. The findings show that parts of eastern Utah's Navajo desert are much older than previously thought, and that the giant sand sea had a wetter climate at times.
Semi-arid regions in northern China have expanded significantly over the past 60 years due to climate change. The drying trend is linked to a weakened East Asian summer monsoon and amplified by land-atmosphere interactions. This expansion increases the risk of desertification, food insecurity and water scarcity.
A quarter of the world's land could become significantly drier if global warming reaches 2C, according to new research. This change would increase the threat of droughts and wildfires, with areas such as semi-arid regions experiencing conditions similar to arid climates.
A recent study published in Nature Communications found that northern high-latitude cooling played a key role in triggering the rapid termination of the African Humid Period around 5500 years ago. This period was characterized by significant rainfall, but its sudden end led to aridification in the region.
A new study challenges the idea that changes in Earth's orbit triggered Sahara desertification. Human activities, such as pastoralism, are believed to have contributed to the region's ecological shift towards desert-like conditions. The findings highlight the importance of understanding human impact on environmental systems.
Researchers developed a novel tree-planting technique to combat desertification by protecting seedlings from high temperatures. The technique involves using tubes to reduce soil temperature and increase survival rates of desert plants like Haloxylon ammodendron.
Researchers have developed a numerical simulation to study wind-sand movement in straw checkerboard barriers (SCB) and their surrounding area. The results show that SCBs can decrease sand transport rates and reduce the strength of wind-sand flow eddies, leading to increased sand fixation.
Scientists have identified active faults in the Pacific Northwest region, which could produce earthquakes with magnitudes between 6 and 6.5. A volcano in Greece has also reawakened, causing significant swelling of the land near the caldera, suggesting an influx of magma into a chamber below the surface.
A new position paper from the American Thoracic Society predicts increased asthma, allergies, and infectious diseases worldwide as climate change worsens air quality and heat stress. Vulnerable populations like infants, children, and the elderly will be disproportionately affected.
Researchers are using community modeling to address complex issues like climate change, air pollution and desertification. The approach involves teams of experts pooling data and ideas in a collaborative process.
A new landmark study confirms that diverse ecosystems perform more ecological functions and are vital for carbon sequestration and soil health. Dryland ecosystems covering 40% of the Earth's land surface support 40% of its people, making them particularly vulnerable to environmental changes.
The global scientific conference highlights the importance of developing science-based methods for monitoring and assessing land degradation. It aims to find ways to combat desertification in drylands, where climate change is expected to worsen droughts and impact rural poverty.
A study found that perennial vegetation cover can indicate desertification processes in semi-arid esparto fields, with a positive correlation between total vegetation cover and soil fertility. This early warning system has potential for management and restoration measures before ecosystem degradation becomes irreversible.
The March 2009 issue of BioScience explores new tools for weed science, the role of field stations in cultivating biologists, and quantifying ecosystem services. Researchers argue that changes in connectivity drive desertification and highlight the importance of nonindigenous species affecting salmon populations.
Researchers at New Mexico State University offer a new approach to understanding desertification by studying past events, environmental factors, and soil properties. Their six-step scheme integrates information from broad scale to fine scale to determine the most important influences.
Scientists used NASA Airborne Visible and Infrared Imaging Spectrometer (AVIRIS) to analyze vegetation and soil changes in response to rain variation over large areas. They found that long-term decrease in litter cover is the most evident sign of desertification, with significant changes in green vegetation and bare soil areas.
A recent study reveals that desertification is driven by a limited number of recurrent pathways, including regionally distinct combinations of factors and feedbacks. The analysis challenges traditional single-factor explanations and highlights the impact of public and individual decisions on desertification.
German scientists used a climate model to conclude that the Sahara's desertification began abruptly 5,440 years ago due to subtle changes in Earth's orbit. The resulting desertification had significant impacts on ancient civilizations, with some of the most severe changes occurring between 4,000 and 3,600 years ago.