“The land areas are under growing human pressure that can be generated,” said the Chairman of the IPCC, Hoesung Lee. At the same time, also a part of the solution to the problems of climate change lie in dealing with the country. “But the land can not address it alone.”
environmentalists and many scientists see in the report, the document that quick Action in as many areas as possible is essential.
The authors of the report, 107 researchers from 52 countries, from go, among other things, the number, duration, and intensity of heat waves and droughts, not least around the Mediterranean. In many regions, in addition, more frequent extreme rainfall will occur.
food supply is in danger
At the same time, the IPCC sees threats to the food supply. “The stability of the food supply is expected to decrease, since the magnitude and frequency of extreme weather events that affect food production will rise.”
Currently, about 820 million people worldwide are undernourished. Their number is increasing, according to UN data, since a few years back. According to the IPCC, approximately 500 million people in areas threatened by desertification live. These regions are the more vulnerable to weather extremes such as droughts, heat waves and dust storms.
the producer to the consumer need to rethink
the land loss due to climate change, according to Edouard Davin from the ETH Zurich and lead author of the IPPC-special report a big Problem. Such as through desertification, soil erosion, and the loss of Vegetation and the disappearance of Permafrost, as Davin in a communication from the Swiss Academy of Sciences is quoted.
According to the IPCC, it is now essential to rethink the entire chain of production and consumption of food. The authors promote a balanced diet, which relies more on vegetables, grains, and animal products from sustainable production.
eat Less meat
From the point of view of environmentalists must be reduced, particularly the consumption of meat. According to WWF Switzerland, the Equivalent emitted, for a Kilo of lentils only 700 grams, for the production of a kilo of beef up to 15.4 kilograms of CO2.
Switzerland is “on track”
José Romero, Swiss, IPCC-head of the delegation, wrote in a statement to the news Agency Keystone-SDA: “The IPCC report shows that sustainable practices in agriculture need to be intensified with the help of a package of Measures, and evaluated.”
Here, he called about regulations on spatial planning or the introduction of Labels and standards. In addition, the IPCC report show that the preservation of soil quality is an important means of combating global warming and in favor of biodiversity, said the Swiss head of delegation.
Romero sees Switzerland in their efforts towards a sustainable agriculture “on track”. As a positive example, he cites payments to agriculture for the promotion of ecosystem services. This includes maintenance of the landscape or the protection of the catchment areas of water systems.
He noted that in Switzerland, a permanent dialogue between the fields of the environment and agriculture, in order to find for important issues such as the preservation of biodiversity and water quality solutions.
receivables in the Bundesrat
After the publication of the special report called on Greenpeace to the Federal Council to start a “real food” policy. “Less meat = less heat” chanted the activists of the environmental organisation, on the Place des Nations in Geneva. “We cannot be things by halves,” said Mathias Schlegel, spokesman of Greenpeace Switzerland, the Keystone of the SDA.
He hoped that the visit of Greta Thunberg in Lausanne and the IPCC would contribute to the report to make the climate in the Federal elections in the autumn of an important topic. Another Greenpeace representative said: “agriculture has to be local.”
A WWF representative said on the sidelines of the meeting in Geneva: “The report sends a clear message.” Priority must go now to protect the Ecosystems and to restore, as well as to move in the direction of sustainable food production and consumption.
climate summit in September
On the 23. September to advise the States at a climate summit at the UN about the consequences of temperature rise. The climate protection agreement in Paris in 2015 to limit global warming to well below two degrees, preferably 1.5 degrees compared to pre-industrial times.
According to the IPCC special report the global temperature increase compared to pre-industrial times, a total of 0.87 degrees. On the land he is already at 1.53 degrees, because these heat up faster than the sea surfaces.
the time were Compared to the periods 1850 to 1900 and 2006 to 2015. The intergovernmental panel on climate change had already warned 2018 against the consequences if the global temperature should rise above 1.5 degrees.
The global temperature according to Researchers, is currently faster than ever before in the millions of years of earth history, the climate scientists to reconstruct the can rises to. For 50 years, it’ll average global Land and ocean per decade to about 0.2 degrees warmer, explained Andrey * Ganopolski from the Potsdam Institute for climate impact research.
such over many years of continuous improvement is unmatched, or at least in the past three million years, for which there is a lot of quantitative temperature reconstructions, and possibly even in the past 60 million years.
earth’s temperature by 5 degrees
increased For the comparison: The earth’s temperature is increased to the Maximum of the most recent ice age about 20 000 years ago, within 10 000 years to about 5 degrees”, so * Ganopolski. “This is an average warming of about 0.005 ° C per decade, which is about 40 Times slower than currently.” Prior to 10 000 years ago man began Farming the land.
How are past temperatures to be determined?
There are, according to * Ganopolski more or less credible global temperature reconstructions for the last 60 million years, but not for the time before that. Fundamentals are such deposits in the oceans, organisms, or different types of atoms (isotopes). The concentration of CO2 could by direct measurements only for the past 800 000 years reconstructed from samples of Ice cores in the Antarctic. Older figures were based on indirect measurements and contradicted themselves frequently. “The data from paleoclimatology certainly support the view that CO2 is a very important climate factor,” stressed * Ganopolski. (SDA)