global warming
How to affect the Tibetan Plateau on the top of the extremely cold?
Cumulative frozen soil for thousands of years
What are the unknown pollutants?
Department of Environmental Science and Engineering, Fudan University
Professor Wang Zimeng
Cooperate with domestic and foreign scholars
The first time I found it in the frozen soil hidden in the Qinghai -Tibet Plateau
Detailed list of halogen organic compounds
Make targeted warnings for climate change
The results were published in 2023
nature geoscience
Publish a paper for the first time in Fudan in this issue
Selected into the “Top Ten Science and Technology Progress” of Fudan in 2023
Old methods, new applications
“Unlock” Qinghai -Tibet Plateau frozen soil pollutant
In the eyes of Volkswagen, the Qinghai -Tibet Plateau, known as the “Third Extreme of the Earth”, is a sacred place away from pollution.From another perspective, the high -cold environment is the destination of global pollutants.What are the chain reactions and ecological risks caused by the melting of glaciers caused by climate warming?After three years of research, Wang Zimeng’s team gave their important discoveries.
By analyzing the frozen soil samples of the Qinghai -Tibet Plateau, Wang Zimeng team first listed the detailed list of the organic compounds of halogen in the frozen soil -23 samples identified more than 270 halogen organic compounds, with an average concentration of up to 310000NG/G.180,000 ng/g may be a natural source.
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Unlock the “hibernation” of the “hibernation” in the Qinghai -Tibet Plateau frozen soil
The so -called halogen organic compounds, which contain organic compounds with halogen (such as chlorine, bromine, iodine atom), have certain toxicity. If it is volatilized to the atmosphere, it may destroy the ozone layer or produce other climate effects.Surprisingly, the team discovered,The combined residual state of the halogen organic matter in the frozen soil accounts for more than 99%, far exceeding the soil and sediment of other room temperature environments, which updates the knowledge of the methamphetamine compound content of the high -cold environment.Essence
“The content measured by traditional dissolving extraction methods is only the corner of the iceberg with real total amount.” Wang Zimeng said.
Not only that, 85%of these frozen soils are physically sealed, and they have higher potential for release.This means that with global warming, these “hibernation” pollutants that have not been discovered are likely to gradually “wake up” with the melting of frozen soil and become one of the threat factors for climate change.This has also opened up new cutting -edge directions for my country’s climate change response, new pollutant governance and frozen circle biochemical research.
This new discovery is inseparable from the innovation of research methods.Different from the traditional solvent extraction method, this item studies the special nature of the extreme environment, low biological activity, and long -term accumulation of frozen soil samples.A step by step analysis was performed.
Wang Zimeng made an example: “The soil organic mass macromolecules and the compounds contained in it are like the relationship between skin and hair. The traditional solvent extraction method is like a small brush brush, which may be brushed down, but the number is far from enough.. Our method is to cut these hair with scissors to analyze it more thoroughly. “
Talking about the chemical treatment methods used in this item, Wang Zimeng specifically mentioned the contribution of senior scholars: “Mr. Fu Jiamo and other older generation of glutinous chemists introduced organic global chemical methods in the oil exploration industry.After stratigraphic samples, the biomarker in the analysis method of step -by -step chemistry extraction will be used to determine whether there is oil in the ground. “
However, the “new wine” of the “old bottle” of the “old bottle” with old -fashioned Earth chemical methods requires both patience and courage.“This extraction method is very cumbersome. In recent years, the research on soil samples on room temperature has not been discovered. This direction has also been cold. I did not expect that we have dug hot spots at the coldest freezing point.” Wang Zimeng still remembers that we still rememberWhen the first needle of the mass spectrometer was cut into the samples extracted from the frozen soil, the spectrum was given a huge surprise in the whole group.
“The skin is not existed, Mao will be attached.” Wang Zimeng continued to use the relationship between “skin” and “Mao” to introduce the significance of this work in the context of climate change.Once the organic matter structure of the soil is damaged, the sealed pollutants may fall off.“Climate warming lets the microorganisms in the frozen soil wake up. Their breathing and metabolism consumes soil organic matter. Through a series of chain reactions, chemicals that sleep for thousands of years will also wake up.”
Cross -cooperation and win -win situation
Innovate the mystery of the soil and water interface
In fact, Wang Zimeng is not specifically studying the frozen circle. His interest covers various soil and water interface systems. He is persistently deconstructed by the process and unlocks the “black box” in it.“First of all, we need to use scientific research intuition to find the key lock. Many times we have to go to other disciplines to borrow keys.”
In the Lin Taijun Environmental Building of the Jiangwan Campus, the “Water and Water Interface Process Lab” he established by him, in the row of test tubes and seal bottles on the shelves, collected a sample from the South China Sea North, some from farmland, some from from from farmland, some come from from the farmland, and some come from from the farmland.Some of the pollution venues, and some from the hot spring … Some of these samples are independently collected by the team, and some come from the cooperative unit.
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The corner of the Fudan Water and Wetland Interface Process Laboratory
It is the basis for the success of environmental geomicochemical research with both representative and unique samples.The beginning of the research of frozen soil “hibernation” pollutants is derived from a group of frozen soil samples shared by the Northwest Ecological Environmental Resources Research Institute of the Chinese Academy of Sciences.”Thank you very much for his trust. It is also an unexpected surprise to make important discoveries. We are still working further.” Wang Zimeng said with a smile.
Environmental Earth Science itself has multi -disciplinary cross -nature.Win -win cooperation and learning from experts from various fields are the principles of Wang Zimeng’s team.Professor Jan Schwarzbauer of Aachen University in Germany has decades of research experience for the analysis method of soil -combining remnants. Zhu Xiaojing, the first author of the dissertation, mastered this set of analysis methods during his studies in Germany, providing the smooth progress of this project to provide the smooth progress of this project.Key technical support.The team also won the cooperation and assistance of the Chinese Academy of Sciences Qinghai -Tibet Plateau Institute, the Guangzhou Institute of Geochemistry of Guangzhou, Nanjing University, Massachusetts University and Massachusetts.
Earlier, the relevant research on the verification of methane microbes’ functional function he led was also a cross -disciplinary research team with the young scholar Hua Zhengshuang, the young scholar of the Department of Environment of the University of Science and Technology of China to integrate the output of environmental biochemistry experimental technology and biological information.Achievements.The study was published in Science Advances in 2023.
For Wang Zimeng,Cross -disciplinary cooperation not only brings rich academic achievements, but also an opportunity to update academic thinking and methods.Essence”This is a learning opportunity for both parties. For example, in the cooperation with Professor Hua Zhengshuang, we learned the research concepts and methods of biological information. In the subsequent researchMore ideas “”
In the next step, Wang Zimeng plans to cut in from the perspective of organic carbon in soil, compare the frozen circle soil with the east farmland soil, and more comprehensively analyze the feedback of the quality of the soil environment on climate change.He is also working with the team of the Department of Environmental Health and Popular Science to invest in new pollutants such as plastic.In addition, he also recruited and trained a number of team members who explored in emerging frontiers such as artificial intelligence and the Internet of Things to introduce the idea of AI4S (AI for Science) into the research of the water and water interface process.
Return to your alma mater to open up a new direction
Make new contributions to environmental disciplines
In recent years, the country has attached great importance to the governance of ecological environment.Wang Zimeng’s research over the years is highly consistent with the policy of ecological environmental protection.
In 2005, as the first undergraduate of Fudan’s new century, he entered the gate of environmental science. Through the experience of “Wangdao scholars” and other projects, he established his future research history.He studied PhD at Washington University in San Louis, USA, a postdoctoral University at Stanford University, and a assistant professor at Louisiana State University. He studied and worked overseas for 9 years.
In 2018, my country announced the full three major defense wars of “blue sky”, “blue water” and “pure land”.”Resolutely win”, “strive to fight well”, “solidly advance”, the delicate wording of these three battles shows the development process and historical opportunities of my country’s ecological environment.The country’s major needs for soil environmental research and governance are increasingly prominent. Fudan’s environmental discipline layout has also established soil into a direction of emerging development in a timely manner, and it is urgent to need leaders in related fields.
This year, 32 -year -old Wang Zimeng resigned from foreign faculty and returned to work in his alma mater. He resolutely took this responsibility.After returning to China, he has won the Youth Scientist Award from the International Society twice, serving as the first Asian editor of the Appliced Geochemistry of the International Geophysical Association.Young talent plan.The team stepped solid and worked hard to improve Fudan’s subject influence.
“Now that I have returned to China for six years, our work has finally ushered in a breakthrough, and the steps can be a little bigger.” Wang Zimeng said with emotion.This team that still looks younger from age has quietly showed the stability and calmness of the experience.
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Team member group photo
In Wang Zimeng’s view, his work is not only the results of output scientific research, but also the training of talents and service disciplines.As a “Zhongying Young Scholar”, he is also enthusiastic about science and public welfare services to have his own scientific research achievements and academic appointments to have influence in a wider group.
“Fudan as the platform and the discipline as the stage. You can know friends who are interested in and do some excellent and interesting things together.”Wang Zimeng met a post -95 mountaineer Ma Chunlin in the process of office account. He used “calculating photography” to shoot Everest, which is quite famous.When he learned that Wang Zimeng was going to report on the research results of the Qinghai -Tibet Plateau at the “Top Ten Science and Technology Progress” special report on the 119th anniversary of Fudan, Ma Chunlin gave Wang Zimeng a non -released Everest work.Through thorough geography, astronomy, and meteorological calculations, it operates a highly difficult drone to fly in a thin air. For the first time, the “Sun and Moon Guanghua” appeared on the northern slope of Mount Everest.
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The “Top Ten Science and Technology Progress” school celebration report shared this photo at the 119th birthday of the alma mater.(Photograph of Ma Chunlin Photography)
Looking back, Wang Zimeng is most grateful. It is the academic atmosphere of Fudan’s free tolerance and encourage innovation, so that he and young scholars have sufficient development space.”Thanks to the school for providing us with a variety of platforms and resources. Next year will become the 20th anniversary of Fudan people. I hope that in the future, we can make greater contributions to Fudan’s environmental earth science.” He said expecting.
Studies have been funded by the National Natural Science Foundation of China, the Open Fund of the Institute of Ecological Environment and Resources of the Chinese Academy of Sciences, the second scientific examination project of the Qinghai -Tibet Plateau, and the “Belt and Road” International Science Organization Alliance. At the launching stage, it has been supported by Fudan University.The first author and the first communications unit are the Department of Environmental of the Fudan, post -doctoral Zhu Xiaojing, master student Yang Fan, and undergraduate Li Zhen as the top three authors of the paper.wait.
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