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为了从石笋中提取更多的古气候信息,以用于气候预测,需要研究现代洞穴沉积过程与周围环境变化的关系。本文通过对贵州5个洞穴现代沉积玻片上菱形方解石的长度与滴水变率观测研究发现,在洞穴滴水不间断的情况下,滴水变率较小的滴水点,菱形方解石晶体长轴生长速率较快,反之,生长速率较慢。反映在石笋中,石笋晶体粒径较大说明处于降水稳定时期,石笋晶体粒径较小指示沉积时期降水变率较大,气候不稳定。
In order to extract more paleoclimate information from stalagmites for climate prediction, it is necessary to study the relationship between the deposition process of modern caves and the changes of the surrounding environment. Based on the observation of the length and the drip rate of the calcite on the modern sedimentary slides of the five caves in Guizhou Province, it is found that the drip point with a small drip rate and the long axis of the rhombic calcite crystal grow faster under the condition of continuous drip irrigation , On the contrary, the growth rate is slower. Reflected in the stalagmite, stalagmite crystal size larger in a stable period of precipitation, stalagmite crystal smaller size indicates precipitation during precipitation variability, climate instability.