黄土高原全新世孢粉古植被地方性分异研究

在利用剖面孢粉数据准确恢复古植被类型时,存在较大的地方性差异,本文选取岐山、西峰、耀县、秦安、定西、宝鸡等不同位置、不同地貌类型的几个剖面全新世孢粉资料,利用孢粉百分含量与浓度数据,通过对比统计,得出剖面孢粉组合的地方分异性特征.建议为准确恢复古植被类型,应依据本剖面的孢粉资料分析结果,并考虑大的气候背景条件和具体地点的地理位置,地貌类型等小环境因素决定的地域性规律,来修正古植被类型.

The Research of Holocene Vegetable Characteristic of Different Locations in Loess Plateau

There were different ideas when investigators reconstructured the vegetable styles. In this paper, Qishan, xifeng, Yaoxian, Qinan, Dingxi, Baoji sections which are in different location and have different physiognomy styles were chosen. According antitheses and statistics of pollen percentage and concentration, the result revealed different local characteristic of pollen assembled in different, places. We suggest that in order to recover paleo-vegetation styles correctly, first of all, we should analyses the pollen data gained from the section, and then compare the result with different locations nearly and consider the belt rule and regional climate background to estimate the possible vegetation styles in the studying sections.