soil
Pressure on some water, soil ecosystems at critical point: UN
The pressure on water and land ecosystems at the global level was intense and, in some cases, at a critical point, which might put the goal of feeding the world's population by 2050 at risk, a UN report said Thursday.
The "State of the World's Land and Water Resources for Food and Agriculture – Systems at breaking point (SOLAW 2021)," launched by the UN Food and Agriculture Organisation (FAO), highlighted that around 33 per cent of the planet's soil was marked by moderate to high degradation.
While the trends in resource use were on the rise, and so was soil degradation, the availability of new land to devote to agricultural production was low.
Adding the effects of climate change and loss of biodiversity would mean that "the current agrifood production patterns are not proving to be sustainable," according to the report.
"Against this backdrop, it is clear that our future food security will depend on safeguarding our land, soil, and water resources," FAO Director-General Qu Dongyu said.
Also read: World Soil Day observed focusing quality soil for growth
"The same agrifood systems could play a crucial role in changing these patterns, alleviating the current pressures on water and soil ecosystems, and reversing the land degradation process," he added.
"Sustainable agricultural practices could lead to direct improvements in the state of land, soil and water, generating ecosystem benefits and reducing emissions from land," the FAO report said.
Yet, it added that only a "much-reformed land and water governance" would allow remedial land management.
"Any advance in transforming food systems to meet future demand will require a focus on land resource planning in which systemic analyses of land, soils, and water are combined with poverty and food security monitoring," it said.
Also read: Illegal soil mining is Feni's biggest challenge
2 years ago
Japan aims to bring back soil samples from Mars moon by 2029
Japan’s space agency plans to bring soil samples back from the Mars region ahead of the U.S. and Chinese missions now operating on Mars, in hopes of finding clues to the planet’s origin and traces of possible life.
The Japan Aerospace Exploration Agency, or JAXA, plans to launch an explorer in 2024 to land on the Martian moon Phobos to collect 10 grams (0.35 ounce) of soil and bring it back to Earth in 2029.
The rapid return trip would put Japan ahead of the United States and China in bringing back samples from the Martian region despite starting later, project manager Yasuhiro Kawakatsu said in an online news conference Thursday.
Also read: Want to pretend to live on Mars? For a whole year? Apply now
NASA’s Perseverance rover is operating in a Mars crater where it is to collect 31 samples that are to be returned to Earth with help from the European Space Agency as early as 2031. China landed a spacecraft on Mars in May and plans to bring back samples around 2030.
JAXA scientists believe about 0.1% of the surface soil on Phobos came from Mars, and 10 grams could contain about 30 granules, depending on the consistency of the soil, Kawakatsu said.
Tomohiro Usui, professor at the Institute of Space and Astronautical Science, said soil on Phobos is likely to be a mixture of material from the moon itself and material from Mars that was spread by sandstorms. Collecting samples from multiple locations on Phobos could provide a greater chance of obtaining possible traces of life from Mars than obtaining soil from a single location on Mars, he said.
Any life forms that might have come from Mars will have died because of harsh solar and cosmic radiation on Phobos, JAXA scientists said. The NASA and the European Space Agency missions focus on potential life forms and evolution of the area of the Jezero crater, believed to be an ancient lake.
Also read: China’s Mars rover touches ground on red planet
By studying Phobos soil samples including material from Mars, scientists hope to learn about the evolution of the Martian biosphere, Usui said.
He said Japanese research on Phobos and NASA’s samples from specific locations in the Martian crater can complement each other and could lead to answers to questions such as how Martian life, if present, emerged and evolved in time and place.
Last December, a JAXA probe, Hayabusa2, brought back more than 5 grams (0.19 ounce) of soil from the asteroid Ryugu, more than 300 million kilometers (190 million miles) from Earth, in the world’s first successful return of an asteroid sample.
3 years ago
Living in fear of the mighty Padma
Originally a resident of the Isaeel Shibrampur area in Goalundo upazila's Daulatdia union, Jalil Sikder now lives with his family in a hutment on a Good Samaritan's land in Nasir Sardar Para.
"We were rendered homeless after our house was washed away by the mighty Padma river in front of our eyes last year. Thanks to a benevolent person in Isaeel Shibrampur, we have a roof over our heads," he says.
Riverbank erosion is a common problem along the Padma during the rainy season.
And Jalil is also not the lone sufferer. Over the years, several families in the riverine areas of the upazila's Daulatdia and Debgram unions have been rendered homeless by such engulfing calamity.
READ: Padma boat capsize: Bodies of missing AIUB student, cousin found after 8 days
Some 2,000 families still living in the riverine areas of the two unions are now spending sleepless nights. Their fears are tangible, with monsoon rains barely a week away.
"Every day, the river is washing away some three to four bighas of land. The erosion aggravates during the monsoon when the Padma overflows its banks. It's high time that the authorities took safety measures without any delay," says Hazrat Sheikh, a resident of Devgram's Munshibazar area.
"In the past three years, some 300 families have been forced to abandon their houses in Devgram. What we get from the local authorities after every monsoon is only assurances of better preparedness for next year," says Ruby Khatun, a resident of Aziz Sardar Para.
Read Riverbank erosion destroys homes and hopes
Upazila Chairman Mostafa Munshi admits the problem the riverine areas face during the monsoon. "I have sought Rajbari-1 MP Kazi Keramat Ali's help in this regard," he says.
According to the Rajbari-1 MP, all preparations are underway for starting the construction of an embankment from Ferry Ghat to Debgram Antarmor to prevent erosion.
"The Executive Committee of the National Economic Council will soon begin work on Daulatdia and Paturia Ghat modernisation projects worth around Tk 650 crore," he says.
Upazila Nirbahi Officer (UNO) Azizul Haque Khan recently visited the affected areas. "For the time being, the Water Development Board is placing sand bags along the ferry ghat," he says.
READ: Padma devours SESDP Model High School in Madaripur
3 years ago