物候学是研究动、植物在一年间的气候变化中与环境相互关系的科学。为了适应一年中不同季节气温的变化,古代人类“夏葛而冬裘”,现代则利用暖气、空调等设施,改变了人们对气温变化的依存条件。但长期固定生活在露地的树木,古往今来,依然在一年的不同季节中,依存于气候的变化而出现萌芽、发叶、落叶和开花、结实、落果等物候现象,由于这些物候现象,是多世代以来,周而复始,重复出现在一定的气候条件下,因此观测物候现象,又可以划分出当时 Phenology is a science that studies the interactions between plants and animals in a year-long climate change. In order to adapt to the temperature changes in different seasons in the year, ancient human beings, “Xia Ge and Dong Qiu”, modern use of heating, air conditioning and other facilities, changing people’s dependence on temperature changes. However, the long-term fixed living in the open field of trees, throughout the ages, still in the different seasons of the year, depending on climate changes appear budding, leaves, leaves and flowering, fruiting, fruit drop Phenomenon, due to these phenological phenomena, is more From generation to generation, repeated again and again in certain climatic conditions, so observing phenological phenomena, but also can be divided at that time