Ecological significance of common pollen ratios: A review |
| |
Authors: | Furong Li Jinghui Sun Yan Zhao Xiaoli Guo Wenwei Zhao and Ke Zhang |
| |
Institution: | (1) Division of Biological Sciences, University of Missouri, 202 Tucker Hall, Columbia, MO 65211-7400, USA;(2) Present address: Laboratorio de Ecolog?a, Departamento de Biolog?a, Universidad Aut?noma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco #186, Col. Vicentina, Del. Iztapalapa, C.P. 09340 M?xico D.F., Mexico |
| |
Abstract: | Pollen ratios have been commonly used to indicate landscape change and climate variation. However, the reliability of these
indicators needs to be verified by studies on modern pollen process. Here, we synthesized the major pollen ratios used in
previous studies and found that pollen ratios are valuable indicators for the change of vegetation types and climate, e.g.,
precipitation and moisture. Artemisia/Chenopodiaceae (A/C) ratio could increase from desert to steppe and positively correlate with mean annual precipitation (MAP).
Artemisia/Cyperaceae (A/Cy) ratio could be used to identify cool meadow and warm steppe, and it is positively correlated with temperature
of July (TJuly) and negatively correlated with MAP. Arboreal pollen/nonarboreal pollen (AP/NAP) ratio can be used as a semi-quantitative
indicator for landscape and regional precipitation changes. In spite of the significant climatic and environmental implications
of the pollen ratios, they were also questioned in some studies under various circumstances and thus caution is needed when
using them to indicate climate in different vegetation zones. |
| |
Keywords: | |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|