Newswise – Growing public concern about global warming due to its significant impacts on society, ecosystems and the environment underscores the importance of understanding long-term climatic conditions in different regions. With limited observational data limiting our comprehensive understanding of climate change, tree ring data are proving to be a crucial indicator, providing high-resolution and precisely dated insights into climate dynamics over the past millennium.

By analyzing 45 core samples, researchers created a chronology reflecting warm season temperatures from May to August in the region. Their methodology significantly advances previous efforts by incorporating latewood density and BI data, thereby filling a critical gap in our climatic understanding. This approach allowed them to create a detailed temperature record and reveal periods of climate fluctuations that closely match historical climate patterns. The study not only shows the effectiveness of BI as a proxy for historical climate analysis, but also opens new possibilities for the reconstruction of past climates in other regions. By correlating the BI data with recorded temperature fluctuations, the researchers were able to trace temperature trends back to 1760 AD, providing a much-needed long-term perspective on climate change in northern China. This research is evidence of the potential of dendroclimatology to contribute to our understanding of global climate dynamics.

Professor Chen Feng, corresponding author of the study, emphasized the importance of this research. “This method not only improves our ability to decipher past climate fluctuations, but also strengthens our ability to predict future climate trends, allowing us to avert catastrophic environmental impacts to some extent,” he said.

This study provides valuable data for understanding the dynamics of climate change in northern China, revealing seven high-temperature periods and three low-temperature periods over the past 261 years. It demonstrates the potential of BI as a cost-effective and reproducible method for climate reconstruction, which is crucial for regional climate prediction and environmental planning.





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National Natural Science Foundation of China, No. 32061123008

Around Journal of Geographical Sciences

Journal of Geographical Sciences is an international and multidisciplinary peer-reviewed journal focusing on the relationships between humans and nature. It publishes articles on physical geography, natural resources, environmental science, geographical information, remote sensing and cartography. Manuscripts come from different parts of the world.

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