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树轮稳定氧同位素作为一种高精度的古气候代用指标,在亚洲地区的发展起步晚进步快。树轮稳定氧同位素比率(δ~(18)O)对区域气候信息有较强的记录能力,且与水汽循环关系密切,对于理解复杂的亚洲气候起着重要作用。亚洲地区树轮δ~(18)O对温度的响应主要出现在高纬度地区,中低纬度树轮δ~(18)O主要记录与水分(降水、相对湿度、PDSI等)有关的信号。对亚洲地区已发表的树轮δ~(18)O与气候要素(温度、降水、相对湿度)的相关分析显著性统计显示,生长季气候对树轮δ~(18)O至关重要,树轮δ~(18)O与温度的显著相关关系呈正相关,与降水和相对湿度的呈负相关,温度和降水通过降水δ~(18)O影响树轮δ~(18)O,但各自的信号强度存在区域差异,而相对湿度信号则广泛记录在不同区域不同树种之中。亚洲树轮稳定氧同位素研究集中于中低纬度地区,因而对大气水文循环的响应主要侧重于对亚洲夏季风和ENSO的研究,对季风降水的记录反映了季风活动的变化特征以及与之有关的环流信息;季节分辨率的树轮稳定氧同位素研究限于低纬热带亚热带区域,但对于理解区域气候和季风活动的年内变化、挖掘年轮不清晰树种的树轮学研究潜力具有重要的意义。
As a high-precision paleoclimate substitute indicator, the stable oxygen isotope of tree-ring has started late in the development of Asia and progressed rapidly. The steady-state oxygen isotope ratio (δ ~ (18) O) of tree-ring has a strong ability to record regional climate information and is closely related to the water vapor cycle, which plays an important role in understanding the complex Asian climate. The response of tree ring δ 18 O in Asia mainly appears in the high latitudes. The tree rings δ 18 O in the low and middle latitudes mainly record the signals related to water content (precipitation, relative humidity, PDSI, etc.). A significant statistical analysis of the correlation analysis of published tree ring δ 18 O in Asia with climatic elements (temperature, precipitation and relative humidity) shows that the climate in the growing season is crucial to the δ 18 O tree ring, There was a positive correlation between δ (18) O and temperature, and a negative correlation with precipitation and relative humidity. Temperature and precipitation affected δ ~ (18) O of tree rings through precipitation δ ~ (18) O, but δ There are regional differences in signal intensity, while relative humidity signals are widely recorded in different species in different regions. The study of Asian tree-ring stable oxygen isotopes focuses on the middle and low latitudes, and thus the response to the atmospheric hydrological cycle focuses mainly on the study of the Asian summer monsoon and ENSO, and the record of monsoon precipitation reflects the changing characteristics of monsoon activity and their associated However, it is of great importance to explore the potential of tree-ring research to understand the climatic and monsoon activities during the year.