第四纪孢粉分析中古气温、古降水指数的计算方法──以成都锦江一级阶地研究为例

THE METTHOD FOR CALCULATING QUATERNARY AIR -THMPERATUREAND WATER-PRECIPITATION INDEX IN THE POLLEN-SPORE ANALY-SIS-FOF EXAMPLE TO STODY I-STEP TERRACE OF JINJIANG RINGER, CHENDU PLAIN

本文探讨如何应用孢粉分析提供的孢粉谱（孢粉植物种类和百分含量）求取第四纪气温指数（植物生态气温指数，孢粉含量温度指数和样品年均气温指数－古气温指数）和降水指数（植物生态降水指数，孢粉含量降水指数和样品年均降水指数－古降水指数）等古气候指示参数的方法。文中不仅介绍了各概念的含义和计算原理，而且介绍了计算方法和修正计算值的方法，并以成都平原锦江一级阶地孢粉分析作为应用实例，论述了成都地区中晚全新世气候特征、演变过程和规律。

This paper discusses mathematical calculating method about Quaternary Air-Temperature Index (ATI) and waterpreciptation Index (WPI) How evaluate and ues the data of [Pllen-spote assemblage (Catagory and percentage of poen, apore). ATI includes 3 concepts: Plant-Ecology ATI includs 3 concepts: Plant-ecology WPI, Pollen-Spore contents WPI, Sample Aunual-Average WPI. They are darameters showing palaeoclimate in Quaternary. In the paper, the meaning of concepts and the principle of the calculating are introduced, and the kkey Point is the method to evalute and revise them. And to take the research of Pollen-Spore analysis for one-step terrace of the Jinjiang river, Chen Du Plain as an applied example to evaluate ATI and WPI. And the feature,changing process and law of the climate .at the Chen Du area in the middle-Late Holocene are disussed.