The world’s leading scientific community determines the ‘fingerprint’ because of the amount of heat, the amount of drought for forests.

The world’s leading scientific community determines the ‘fingerprint’ because of the amount of heat, the amount of drought for forests.

Taken in 1993, this photograph shows the extinction of the historic Atlas Cedar forests in Morocco. Found: Csaba Mátyás, professor emeritus, University of Sopron, Hungary

How hot is the heat, and how dry the drought, is for the forests of the Earth? New research from a group of global researchers has found the answers – by looking at the age of drugs.

It was only published in a journal Nature Communications, The study compiles the world’s first archive of precisely georeferenced forest make-off events, at 675 locations around 1970. The study, covering all forest lands, then compares that information with the temperature to determine temperature and dry climatic conditions. these tree -killing articles were created.

“In this research, we’re allowing the Earth’s forests to communicate,” said William Hammond, an ecophysiologist at the University of Florida who led the research. “We collected data from previous studies documenting where and when the trees died, and then figured out what the climate was like during the death events, compared to long -term conditions. . “

After studying the weather on the forest death data, Hammond realized something had happened.

“What we’ve seen on the ground is that this kind of hotter and drier – what we call a‘ hotter -drought fingerprint ’ – can show us the The kind of heat or drought that puts forests at risk … of death, ”said Hammond, an assistant professor in the UF / IFAS agronomy department.

He said the finger shows the deadly events of the forest during the warmer and drier months of the normal and driest months of the year.

“Our dry fingers have been shown that the world’s forests are dying as a result of climate change,” Hammond said. Using model data, we estimated the frequency of these deaths under heating, compared to the pre -industrial climate – 22% more. as much as 2 degrees Celsius (with 3.6 degrees Fahrenheit), 140% more than at. me 4 degrees Celsius (me 7.2 degrees Fahrenheit). “

Those high temperatures are more than double the amount of trees around the world see trees, he added.

“Plants play an important role in capturing and filtering carbon,” says Hammond. “But the death of the plants not only prevents them from doing this important job of capturing carbon, the plants also start to release carbon through their decay.”

Hammond says reliance, in part, on trees and other plants to capture and filter carbon, as some climate regulators believe, is critical. understanding that heat is ‘very hot,’ and dry is ‘very dry.’ “Otherwise, fatal events, such as the ones included in our database, could deplete the planned carbon emissions.”

One of the authors of the study, Cuauhtémoc Sáenz-Romero of Universidad Michoacana de San Nicolás de Hidalgo in Mexico, gives an example of the impact of the new climate on the tropical Mexican forest.

“In recent years, the drought and temperature from March to May has been more intense than usual, but it is warmer than ever before,” he said. “This gathering is strengthening the trees before the arrival of the June-October rainy season. For example, by 2021, more than 8,000 mature trees will be killed by bark. Skin at the Monarch Butterfly Biosphere Reserve in Central.. Mexico. The result of the Pacific Ocean river La Niña is that it is drier and warmer; a dying group that wants deadly diseases. “

Hammond also developed an application on the International Tree Mortality Network’s website to host online data and allow others to send more information of forest mortality to the archive.

The group, founded and organized by co -author Henrik Hartmann from the Max Planck Institute in Germany, among others, is a collaborative effort between scientists in each of the jungles and hopes to organizing world research activities into forest make-off events. Hammond is the leader of the data management team.

“We hope this paper will do some quick work on the need to understand the role of warming in forest mortality,” Hammond said. “Furthermore, we believe our open library will be able to access more research, with more fingers from the country to the archipelago…. One of the highlights of this research is. Combining all this data for the first time, so that we can ask a question like this globally. “

DEFINITIONS

‘World Show’

Using maps or aerial photographs, scientists give them real -world layouts.

‘Real world’

Information is recorded and verified by careful observation and measurement. In the case of machine learning, it involves looking at the results for accuracy.


Extreme heat, dry summers are the leading cause of tree death in Colorado’s subalpine forests.


More information:
World tours of the make-off tree show the hot dry finger for the forests of the Earth, Nature Communications (2022). DOI: 10.1038 / s41467-022-29289-2

Presented by the University of Florida

Directions: The global scientific community determines the ‘fingerprint’ for extreme heat, drought for forests (2022, April 5) retrieved 5 April 2022 from https://phys.org/news/ 2022-04-global-team-scientists -fingerprint-drought.html

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