What Does a Dendrochronologist Do?

Tree chronology is a discipline that studies the influence of the environment on the growth of tree rings based on the characteristics of tree ring growth. The aim is to obtain proxy data and reconstruct historical facts of past changes in environmental factors.

With the recent severe environmental damage, people pay more attention to the use of tree rings to study local environmental changes, local hydrological changes, and rely on these changes to judge possible local problems

Dendrochronology is a very important discipline and the basis of many disciplines. With the advancement of science and technology and the use of new equipment, the annual ring width is no longer the only source of data and data, and annual ring density and cell structure analysis are becoming the new focus of research. Image analysis, as an important method for tree chronology analysis, is a big technical improvement after the annual ring x-ray density analysis. The research method of climate reconstruction is to combine a single tree-round indicator to multiple tree-round substitute indicators. Generally speaking, the combined sequence has the characteristics of strong signal and high reliability. Therefore, it is a more effective way to restore the ancient climate. ^[8]

China's tree chronology research has made great progress since the 1990s, especially the tree ring climatology research has already had some influence internationally. However, the development of tree chronology in China is relatively uneven, and the development of other tree ring branches is relatively weak. This article summarizes the research progress of different branch disciplines of tree chronology at home and abroad, and compares the current status of tree chronology research in China and international research. Suggestions are made on the study of different branches of dendrology in China. Future tree ring climatology research in China should be based on a large number of tree ring climatological reconstructions in different regions, and try to use different mathematical methods and multi-tree ring index (width, density, isotope and wood anatomy index) for long-term scale And large-scale reconstruction work, and discuss the climate mechanism of the reconstruction period through diagnostic methods and process simulation. ^[9]