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American Focus > Blog > Environment > Three-quarters of the world’s land is drying out, ‘redefining life on Earth’
Environment

Three-quarters of the world’s land is drying out, ‘redefining life on Earth’

Last updated: December 25, 2024 3:25 am
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Three-quarters of the world’s land is drying out, ‘redefining life on Earth’
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The Earth is undergoing significant changes as it grows warmer, with its ground becoming drier and saltier. These changes are having profound consequences for the planet’s inhabitants, with nearly a third of people already living in areas where water is scarce and agriculture is challenging.

Recent research has shown that global warming has led to 77% of the Earth’s land becoming drier over the past three decades, while also increasing the proportion of excessively salty soils. Drylands, areas where water is hard to come by, now cover more than 40% of the planet, excluding Antarctica. This is a likely permanent consequence of climate change, according to a report by the United Nations Convention to Combat Desertification (UNCCD).

Another analysis by the Food and Agriculture Organization of the United Nations (FAO) found that roughly 10% of the world’s soils are affected by excess salt, with another 2.5 billion acres at risk. These trends pose a serious threat to agricultural productivity, biodiversity, and ecosystem health, exacerbating food and water insecurity.

The reports sound an urgent alarm, warning that unless emissions are curbed, these shifts will continue with grave implications. Without concerted efforts, billions of people face a future marked by hunger, displacement, and economic decline. Climate change has transformed 7.6% of the planet’s land between 1990 and 2020, with most affected areas shifting from humid landscapes to drylands.

These changes are not limited to regions already considered dry; they could also impact areas like the Midwest, central Mexico, and the Mediterranean. Researchers predict that unless emissions are sharply reduced, the proportion of land worldwide with reduced water availability could more than double by the end of the century.

Arid regions experience persistent, long-term conditions where evaporation exceeds rainfall, making it challenging to sustain life. This expansion occurred under conditions that are not as hot as what is expected in the future, suggesting that the problem will only escalate, leading to issues like conflicts over resources.

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The impact of expanding drylands goes beyond agriculture, affecting economies, migration patterns, health, and mortality rates. Climate change is already affecting food production, with one in 11 people worldwide going hungry last year. If emissions continue unchecked, regions like sub-Saharan Africa could lose up to 22% of their crop production capacity by 2050.

It is clear that urgent action is needed to address these challenges and mitigate the impact of climate change on the Earth’s land and water resources. Failure to act decisively could lead to widespread hunger, displacement, and environmental degradation on a global scale. The production of staple food crops such as soybeans, wheat, and rice in regions highly susceptible to aridity is facing a serious threat worldwide. The rapid expansion of drylands is directly linked to the increase in saltier soils, making it challenging for farmers to cultivate these essential crops. Maria Konyushkova, a soil scientist at the Food and Agriculture Organization, highlighted the interconnected nature of this issue in a recent report.

The scarcity of freshwater in arid areas forces farmers to use brackish water, leading to soil salinity. Excessive salt in the soil hinders the water absorption of plants, depriving them of moisture and stunting their growth. Moreover, high salinity alters soil structure, making it more prone to erosion and reducing fertility. As a result, the yield of crops like rice and beans could decrease by up to 70% in the most affected countries. Currently, about 10% of the world’s irrigated and rain-fed cropland has been impacted by this concerning trend.

The impact of salt-affected soils is significant, with 10 countries, including China, Russia, and the United States, accounting for 70% of such lands. This poses an annual cost of at least $27 billion to the global agricultural sector. If global warming continues unabated, projections suggest that over 50% of the world’s cropland could be affected by 2050, exacerbating food insecurity and hunger.

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At the recent UNCCD COP16 conference in Riyadh, Saudi Arabia, representatives from nearly 200 nations discussed strategies to address land degradation, desertification, and drought. U.N. Secretary-General António Guterres emphasized the critical role of land in sustaining life and called for urgent action to combat these challenges.

Various solutions were proposed, including nature-based approaches like agroecology, improved crop and water management, technological innovations, and the development of salt-resistant crop varieties. Additionally, substantial investments are needed to address the issue effectively. Reports suggest that halting land degradation could prevent a $23 trillion loss to the global economy by 2050, requiring an investment of $4.6 trillion.

Despite the urgency of the situation, only $12 billion was pledged at the summit to address land degradation in vulnerable countries, falling short of the required funding. While there was no consensus on a binding agreement, the need for immediate action remains critical. Konyushkova emphasized the importance of governments prioritizing resilience efforts to mitigate the crisis, as the consequences of inaction are already evident.

As the world faces the escalating threat of aridity and soil salinity, it is imperative for governments and stakeholders to collaborate on effective strategies to safeguard food production and ensure global food security. The time for action is now, as the challenges posed by climate change continue to escalate. The advancement of technology has transformed the way we live our lives, from the way we communicate to how we work and play. One of the most significant changes that technology has brought about is the rise of smart home technology. Smart home technology allows homeowners to control and automate various aspects of their home, such as lighting, heating, security, and entertainment, through a centralized system that can be accessed remotely.

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One of the key benefits of smart home technology is its ability to increase convenience and efficiency. With smart home devices, homeowners can control their home’s temperature, lighting, and security systems from their smartphone or tablet, even when they are not at home. This allows for greater control over energy usage and can lead to cost savings on utility bills.

In addition to convenience, smart home technology also offers improved security features. Smart home security systems can include cameras, motion sensors, and alarms that can be monitored and controlled remotely. This provides homeowners with peace of mind knowing that they can keep an eye on their home at all times, even when they are away on vacation or at work.

Another benefit of smart home technology is its ability to enhance entertainment and connectivity within the home. Smart TVs, speakers, and other entertainment devices can be connected to a centralized system, allowing for seamless integration and control. This means homeowners can easily stream music, movies, and TV shows throughout their home with the touch of a button.

Despite the many benefits of smart home technology, some concerns have been raised about privacy and security. Smart home devices are connected to the internet, which means they can be susceptible to hacking and cyber attacks. To address these concerns, manufacturers are continually working to improve the security features of smart home devices and systems.

Overall, smart home technology offers a wide range of benefits for homeowners, including increased convenience, security, and entertainment options. As technology continues to advance, we can expect to see even more innovative smart home devices and systems that will further enhance the way we live our lives.

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