soil degradation – Desdemona Despair

Alain-Richard Donwahi in May 2017, in Abidjan. Mr. Donwahi is a former Ivory Coast defence minister who led the 2022 UN COP15 summit on desertification. Photo: Sia Kambou / AFP

August 20, 2023

Global heating likely to hit world food supply before 1.5°C, says UN expert – “Climate change is a pandemic that we need to fight quickly. See how fast the degradation of the climate is going – I think it’s going even faster than we predicted.”

By Fiona Harvey 12 August 2023 (The Guardian) – The world is likely to face major disruption to food supplies well before temperatures rise by the 1.5C target, the president of the UN’s desertification conference has warned, as the impacts of the climate crisis combine with water scarcity and poor farming practices to threaten global […]

Physiological response curves may shift as soil microbiomes respond to drought. In the short term (minutes to days), physiological acclimation may help to sustain function, such as soil carbon decomposition. Over weeks to decades, community shifts and evolution could alter response curves to maintain functioning under dry conditions. Broken lines indicate potential variation in the breadth of the shifted response curves. Graphic: Evans, et al., 2022 / Functional Ecology

April 16, 2023

Droughts destroying Earth’s biggest carbon sink on land: study – If more carbon-releasing microbes survive than carbon-sequestering microbes, we could end up with carbon-depleted soils

By Mark Waghorn 12 April 2023 (SWNS) – Droughts are destroying Earth’s biggest carbon sink on land, according to new research. Soil stores more greenhouse gas than plants and the atmosphere combined – thanks to the microbes that live in it. Moisture plays a key role in the process. Lack of rainfall is disrupting this […]

Graphs from the “Climate Change and Land 2019” report by the IPCC, showing changes relative to 1961 of greenhouse gas (GHG) emissions, world agricultural production, food demand, and desertification and land degradation. Graphic: IPCC

August 12, 2019

World food security increasingly at risk due to “unprecedented” climate change impact, new UN report warns

8 August 2019 (UN News) – More than 500 million people today live in areas affected by erosion linked to climate change, the UN warned on Thursday, before urging all countries to commit to sustainable land use to help limit greenhouse gas emissions before it is too late. Speaking at the launch of a Special […]

Table showing how many Earths humanity would require if everybody in the world lived like the citizens of selected nations, according to Global Footprint Network in 2019. For the U.S., five Earths would be required. For India, 0.7 Earths would be required. Graphic: Global Footprint Network

July 29, 2019

Earth Overshoot Day 2019 is July 29, the earliest ever

OAKLAND, California, 23 July 2019 – On 29 July 2019, humanity will have used nature’s resource budget for the entire year, according to Global Footprint Network, an international sustainability organization that has pioneered the Ecological Footprint. It is Earth Overshoot Day. Its date has moved up two months over the past 20 years to the […]

A worker fills a tanker train with water, which will be transported and supplied to drought-hit city of Chennai, at Jolarpettai railway station in the southern state of Tamil Nadu, India, 11 July 2019. Photo: P. Ravikumar / REUTERS

July 12, 2019

Water train set to relieve drought-hit Indian city – Doctors forced to buy water for surgery – “We won’t be able to supply water even to the people who can pay a huge sum for a tanker of water”

By P. Ravikumar 11 July 2019 JOLARPETTAI, India (Reuters) – Indian authorities on Thursday filled tanks with water and loaded them onto a train in the southern state of Tamil Nadu to supply its manufacturing capital Chennai where reservoirs have run dry. Technicians in the railway station at Jolarpettai, located over 135 miles (217 km) […]

October 30, 2017

Sumatra region heats up as rainforests are razed for palm oil plantations – “The land use change does not only impact biodiversity and stored carbon, but also has a surface warming effect, adding to climate change”

By Hans Nicholas Jong 29 October 2017(Mongabay) – The wholesale destruction of rainforests across parts of Indonesia’s Sumatra island to make way for cash-crop plantations has not just devastated animal and plant biodiversity in the region, but may also be driving an alarming rise in temperatures on the ground, a new study suggests. Average temperatures […]

July 3, 2015

Graph of the Day: World arable land per capita, 1961-2012

3 July 2015 (Desdemona Despair) – Will world agriculture be able to support a human population of 12 billion people in the year 2100? The answer largely turns on how much land is available for growing crops. Unfortunately, the world’s arable land area is declining at an enormous rate. The UN Convention to Combat Desertification […]