Institute of Geochemistry, Chinese Academy of Sciences
The State Key Laboratory of Environmental Geochemistry (English name: State Key Laboratory of Environmental Geochemistry; abbreviated as SKLEG) was established in 1991 and completed in 1995 and passed the national acceptance.
In the first half of the 20th century, the contradiction between the requirements of human survival and development and environmental degradation prompted us to seriously consider and understand the problems of earth environmental science and the future of mankind.
Against this background,State Key Laboratory of Environmental Geochemistryrely onInstitute of Geochemistry, Chinese Academy of SciencesSince the 1960s, China has taken the lead in establishing and developing the discipline of environmental geochemistry, integrating environmental science and geosciences, combining today's environmental phenomena with the long-term evolution of the earth's history, combining the natural evolution of the earth's environmental system with human impacts, and exploring the share of natural and human effects that lead to changes in environmental quality,Systematically study the evolution law of geochemical processes in the interaction between the earth's spheres[1]。
Chinese name
State Key Laboratory of Environmental Geochemistry
Foreign name
State Key Laboratory of Environmental Geochemistry
In the early research on environmental etiology and environmental quality of endemic diseases, geochemical element tracing method played an important role in environmental investigation and assessment, thus laying a foundation for the rise of environmental science in China.With the deepening of understanding, it becomes more important to understand and solve environmental quality problems from a regional perspective,Geochemical environmentThe view of differentiation has played a guiding role in regional environmental research.The proposal of global change in the 1980s provided a new research space for the development of environmental geochemistry. In 1986, the laboratory opened up a new field of environmental interface geochemistry and environmental record research.
Overall positioning
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In view of the living environment problems that restrict regional and global economic and social development and affect human health, carry out major basic and applied basic theoretical research related to the geochemical process of the earth surface and regional response to global change, and establish the theoretical system of environmental geochemistry of natural and human processes, so as to promote the development and utilization of land resourcesIt provides scientific basis for major decisions on ecological environment protection and governance, as well as human health services, and becomes a research and talent training base for environmental protection in China.
research field
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Taking geochemical theory and methods as the main means, starting from the integrity and interdependence of the Earth's environment, and aiming at the regional (especially the southwest karst area) environment and global change problems, the paper comprehensively studies the chemical elements, isotopes and compounds released by natural and human processes in various spheres of the surface (rock/pedosphere - hydrosphere - atmosphere - biosphere)The law of migration and circulation between and its impact on the ecological environment system, develop and improve the environmental geochemistry theory, assess the share of natural and human actions that lead to changes in environmental quality, and serve environmental protection, human health, and social sustainable development.
Main research contents and objectives:
Surface environmental geochemical process and environmental quality change: mainly study the biogeochemical process of material circulation between various spheres on the earth surface and its ecological environment effect, and reveal the materialBiogeochemical cycleThe relationship with ecological environment changes provides scientific basis for ecological environment protection and governance decisions.
Geochemical records of environment and climate change: study the geochemical proxy indicators of various environments and climate changes, reveal the climate and environmental changes of the earth in the past (especially the Holocene and the past 2000 years) and their relationship with the development of human society, and provide basic data for the establishment of global and regional environment, climate change models and prediction theories.Geochemical environmentAnd human health: study the migration, transformation laws and control mechanisms of harmful substances, reveal the coupling relationship between geochemical environment and human health, and provide scientific theoretical basis for human health risk assessment and human health protection.
Scientific research progress
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The room has made innovations in the gradual work accumulation, highlighting its own research characteristics in the three main research directions of surface environmental geochemical processes and environmental quality changes, geochemical records of environment and climate changes, and geochemical environment and human health, which are specifically reflected in the following aspects:
(1) The frontiers of environmental geochemistry have been highlighted and strengthened
On the basis of the preliminary work, we further refined the scientific objectives and carried out interdisciplinary, basic and cutting-edge research. The number of general NSFC projects rose from 23 in 1996-1999 to 39 in 2000-2004. The number of NSFC projects increased significantly, reflecting the cutting-edge of our discipline direction.
(2) The impact of achievements is increased, and the number and quality of papers are improved
In recent years, the office has won many provincial and ministerial awards for scientific and technological progress.The number of papers published in foreign SCI journals and other core journals by laboratories has increased significantly (see the table below).He has published dozens of papers on high-level SCI journals in his field (generally with an impact factor greater than 2), such as "Earth Planet. Sci. Lett.", "Geochim. Cosmochim. Acta", "Environment. Sci. Technol.", "Chemical Geology", "J. Geophysis. Res.", "Holocene", "Biogeochem.", "Atmo. Environment.", "J. Anal. At. Spectrom.", etc,According to the Web of Science and CNKI, the number of SCI papers published by the laboratory were cited by SCI papers and the number of other citations of Chinese papers were increasing, and the quality of papers was significantly improved.Total number of SCI papers in the period 1996-1999 42 22 173 2000-2004 135 94 448 2005-2009 303246522
(3) Has gradually formed the theoretical achievement system of karst ecological environment geochemistry
Ecological environment degradation, rocky desertification, acid rain hazards, secondary pollution of water environment, heavy metals and health, etc. constitute the typicalEcological environment problems。Aiming at the main ecological environment problems in karst areas, the laboratory focused on the core scientific problem of the relationship between material circulation and ecological environment evolution, condensed scientific objectives, and carried out research with strong foundational and cutting-edge characteristics, highlighting the interdisciplinary characteristics of geochemistry, ecology, biology and other sciences.In substanceBiogeochemical cycleAnd its control process mechanism, such as watershed erosion and water and soil loss, rock/soil/vegetation interface material cycle and soil formation and ecological degradation, heavy metal cycle and secondary pollution of water body, etc.The relevant research achievement "Hydrogeochemical Cycle of Karst (Wujiang) River Basin Lake Materials and Their Ecological Environmental Effects" won the first prize of Guizhou Provincial Science and Technology Progress Award in 2004.
(4) Holocene land air system material energy exchange and global change research has won international high praise
This project breaks through the concept that climate change signals cannot be extracted from the oxygen isotope composition of peat for a long time in the world. Two peat cellulose oxygen isotope time series, Jinchuan in Jilin Province and Hongyuan in Sichuan Province, have been published for the first time, sensitively indicating the climate change on the scale of decades to centuries in the historical period.This research achievement has been highly praised by the international academic community, such as the climate change research center of Columbia UniversityNASARW. Professor Fairbridge published a special comment on The Holocene in 2001, pointing out that "the paper by Hong Yetang and others is a good way to guide the research work of the third millennium.This paper uses the Chinese peat cellulose 18O time series to form a substitute data base completely independent of other new generation records, such as ice core 18O, tree ring 14C and astronomical timing. ""The 6000 year 18O time series obtained by Hong et al. provides a new and valuable alternative record for Holocene chronology." "Hong et al. deserve the gratitude of the whole Holocene academic community".This achievement won the first prize of Guizhou Science and Technology Progress Award in 2004.
(5) Establishment and achievements of geochemical field of natural dissolved organic matter
In the past, the laboratory focused on inorganic environmental geochemistry.In the biogeochemical cycle of surface sphere interface materials, the geochemical behavior of organic matter and biological action in the environment is directly related to ecological environment changes, heavy metal migration and transformation, and human health effects.Therefore, we have actively introduced relevant talents, established relevant disciplines, built relevant basic research experimental facilities, and promoted the development of organic environmental geochemistry.Researcher Wu Fengchang of the laboratory (a talent in the "Overseas Talent Introduction Program" of the Chinese Academy of Sciences) has been recognized by foreign peers for his geochemical research on natural dissolved organic matter in terms of analytical methods, research theories and research results of environmental effects. He has been recognized in Environmental Science&Technology, Organic Geochemistry, Biogeochemistry and Geochemical Journal10 high-quality academic papers were published in international journals.Professor Sigg, an environmental toxicologist at the Limnology Research Center of Swiss Federal Research Institute, believes that the work of Wu Fengchang and others is of great value to the study of organic ligands and is the key to understanding the biogeochemical cycle of copper organic ligands.At the same time, researcher Wu Fengchang was also invited to participate in the preparation of the international chromatography monograph Chromographic Analysis of the Environment, and will convene and preside over the special topic of the 15th Goldschmidt Geochemistry Conference "Dissolved organic matter and its interactions with trace metals and organic pollutants in aqueous waters".
(6) Actively promote international cooperation and improve academic status
The room actively carries out international cooperation and has increasingly expanded its academic influence. It was awarded the right to host the 7th International Conference on Environmental Geochemistry in 2006.
In the field of environment and health, the research work on the environmental causes of endemic diseases and the analytical methods and research of mercury has received great attention from international peers: in May 2004,Researcher Feng Xinbin was invited to participate in the "International Workshop on Harmonization of mercury measurements methods and models to assess source receiver impact on air quality and human health", an international mercury pollution seminar hosted by the US EPA and CNR of Italy, and made a special conference report entitled "Mercury pollution in China an overview".Won the right to host the 9th International Conference on Mercury Global Pollutants in 2009.Researcher Feng Xinbin was also employed as a member of the Scientific Planning Committee of the 7th International Conference on Mercury Global Pollutants held in July 2004 and the 8th International Conference on Mercury Global Pollutants held in 2006.
Researcher Zheng Baoshan andAmerican Geological SurveyOn the basis of years of cooperative research on environmental geochemistry and health and disease with the American Institute of Pathology, the US government has won funding support to establish an international medical geology center in the State Key Laboratory of Environmental Geochemistry to carry out international cooperative research on medical geology and Asian coal geochemistry.It lasts for five years and has an annual budget of 750000 dollars.Cooperation includes research projects, laboratory construction, personnel training and exchange, publishing, co hosting international conferences, promoting knowledge of endemic disease prevention and control, and pilot projects of endemic disease prevention and control.The establishment of this center will greatly enhance the international academic status of the room in relevant research fields.
Researcher Liu Congqiang's work on the geochemical behavior of heavy metals in the process of seawater/river water mixing, and the geochemistry of rainwater rare earth elements and its significance in indicating the atmospheric environment was highly praised by the editor in chief of Chem. Geol., an authoritative journal in the field of geochemistry: (1) "You have made an impressive systematic study of chemical changes along an empirical flow path,documenting compex changes in heavy metal concentration”，（2）“As this is among the first studies aimed at the behavior of REE in rainwater, and as studies like this have potial to （1）illuminate our understanding of the global REE cycle and （2） better define the transport of pollutants in the atmosphere. I feel this study will be widely appreciated by the geochemical community.”。
