润色段落使其更加地道：Over the past three decades the trend of global warming has been increasing which has induced a plethora of extreme weather events and brought serious disasters to social and economic devel

Over the past thirty years, the upward trend of global warming has caused an array of extreme weather conditions, leading to severe setbacks in social and economic progress and endangering human life. Since tree growth is closely linked to local climate, tree-rings serve as a natural 'weather station', displaying structural changes in response to climate change and recording the patterns and trends of climate and environmental transformations. Thus, this study chose tree disks of Styphnolobium japonicum, Robinia pseudoacacia, Pinus massoniana and Podocarpus macrophyllus as the research subjects, and utilized contemporary techniques such as Linear Tree-ring Measuring Stage, Computed Tomography, Scanning Electron Microscope, Energy Dispersive X-Ray Fluorescence Spectrometer, and Pyrolysis-Gas Chromatography-Mass Spectrometry to systematically examine the characteristics of tree-rings and elucidate their association with climate variations. The findings are as follows: