Write a simple research report. The topic is: on the relationship between phenology and weather.

Phenology refers to the phenomenon that biological and abiotic factors in nature are influenced by climate and change with seasons in a year. Such as plant germination, leaf development, flowering and defoliation; Arrival and migration of migratory birds; Frost, snow and river icing are all phenological phenomena.

With the continuous development of phenology knowledge, a modern independent discipline called phenology has gradually formed. Phenology is a science that studies the relationship between the periodic changes of natural plants, animals, meteorology, hydrology, soil and other environmental conditions in a year. It is an interdisciplinary subject between biology, ecology and meteorology. Phenological phenomena change with the change of climate, which not only reflects the weather at that time, but also reflects the accumulation of weather in the past period. From the phenological records, we can analyze the morning and evening of the season. Phenological phenomena can be used as indicators of seasons. Phenology is also called bioclimatology.

Phenology is a mirror of climate. Many ecological factors can be accurately determined by various meteorological instruments, but the arrival of the season can not directly express the morning and evening, but the phenology can be reflected more comprehensively and accurately.