Current location:World Watch news portal > opinions
Researchers uncover future variations of irrigation water use in China
World Watch news portal2024-05-21 22:20:22【opinions】3People have gathered around
IntroductionResearchers have developed a new method using machine learning and multiple data sets to estimate ir
Researchers have developed a new method using machine learning and multiple data sets to estimate irrigation water use (IWU) across China, and also revealed how water use might change in the future based on different climate and economic scenarios.
Irrigated agriculture accounts for about 20 percent of global croplands and contributes more than 40 percent of food production. China is home to the world's largest irrigated farmland, accounting for over half of the country's arable lands.
Therefore, water for irrigation is critical to the crop growth and yields. Accurately characterizing changes in IWU is conducive to formulating optimal water resource allocation policies, particularly in the context of climate change.
However, due to limited data availability and model constraints, it is hard to use existing IWU estimation methods on a national scale or under future climate change scenarios.
The researchers from the Aerospace Information Research Institute under the Chinese Academy of Sciences developed a new machine-learning model to estimate nationwide IWU under a data-driven framework.
The new model integrated a range of high-precision hydrological satellite remote sensing products, meteorological drivers, economic statistics and numerical model simulations. It showed high precision in IWU projections with over 90 percent accuracy rate.
Taking a series of climate and socioeconomic scenarios into consideration, the researchers combined the established machine-learning framework with four advanced Earth system models to forecast the future trends and additional costs of IWU across China over the next 70 years.
Under different greenhouse gas emission scenarios, China's IWU is projected to increase in about 60 percent of provinces, especially in the northwest and northern regions.
IWU is also predicted to increase by 8.5 percent to 17.1 percent by 2050 compared to the historical period (1981-2010), with higher emissions leading to more significant increases.
This rise comes with an estimated additional cost of 1.65 to 3.91 billion U.S. dollars per year, highlighting the urgency for sustainable water management.
The research findings could provide crucial information for policymaking regarding agricultural water, contributing greatly to the sustainable use and management of water resources in the context of climate change and socioeconomic dynamics, the research team stated, adding that the results are also conducive for other countries confronted with increasing irrigation demands.
An article about this discovery was published in the journal Earth's Future.
Address of this article:http://grenada.argoasecurityeu.com/html-76e599848.html
Very good!(66947)
Related articles
- Scottie Scheffler's Louisville court date postponed after arrest during PGA Championship
- Scientists uncover missing link between junk food and cancer
- Labour's housing overhaul plan will 'turn the Green Belt into the Grey Belt', Tories claim
- Police warn King Charles that his planned 2,000
- Baby Reindeer's real
- Iran hints it will build a NUKE if Netanyahu carries out a strike on its atomic sites
- Maurizio Cattalan, Zoe Soldana collaborate in iconoclastic Vatican exhibition inside women’s prison
- AP Week in Pictures: Asia
- Germany's foreign minister visits Kyiv as Ukraine battles to hold off a Russian offensive
- Olympic sports bodies criticize track and field's move to pay $50,000 for Paris gold medalists
Popular articles
- College baseball notebook: Conference tournaments to decide NCAA automatic bids and many at
- India election 2024: Hindu nationalism is mainstream thanks to 10 years of PM Modi
- Labour's housing overhaul plan will 'turn the Green Belt into the Grey Belt', Tories claim
- Chinese navy is operating out of Cambodia's Ream base: US think tank — Radio Free Asia
Recommended
Saudi Arabia is going to sponsor the WTA women's tennis rankings under a new partnership
Police warn King Charles that his planned 2,000
JANET STREET
Sanctions won't work on solving Russia
Kylie Jenner displays her VERY edgy fashion sense in cleavage
San Francisco mayor announces the city will receive pandas from China
JANET STREET
Prue Leith's recipe for seeing red... her husband's online shopping habit!
Links
- Commentary: Honduras made the right decision on ties with Beijing
- Chinese democracy turns good advice into concrete measures
- Commentary: Washington's WTO farce bane for global trade order
- Abortion: Progressive candidates share their stories after Roe's fall
- New Penn State coordinators Kotelnicki and Allen encouraged as spirited spring drills wrap up
- Kate's cancer struggle is even front
- Grain reserve base project under construction in Qinhuangdao, north China's Hebei
- China to contribute wisdom, solutions to cause of peace, development for all humanity
- China injects more positive energy into global economic development
- Man City's Rodri on the bench against Luton after saying he needs 'a rest'