Comparison of climatic threshold of geographical distribution between dominant plants and surface pollen in China

Comparison of climatic threshold of geographical distribution between dominant plants and surface pollen in China
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中国优势植物与地表花粉地理分布的气候阈值比较

DOI:
10.1007/s11430-008-0080-x
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发表时间:
2008-07
期刊:
Science in China Series D-Earth Sciences
影响因子:
--
通讯作者:
Lu HouYuan
Lu HouYuan
中科院分区:
其他
文献类型:
--
作者:
Luo ChuanXiu;Zheng Zhuo;Huang KangYou;Luo YunLi;Wei JinHui;Beaudouin, Celia;Du ChunBin;Cheddadi, Rachid;Xu QingHai;Zheng YanWei;Li ChunHai;Lu HouYuan

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对中国主要植物种的地理分布进行了地理参考,并将气候变量插值到所有网格中。在此基础上,选取了中国1860个表土花粉点的主要花粉类群的百分比分布,并用同样的方法对相关的气候值进行了插值。两个数据集的地理和气候比较表明,大多数花粉分类群的气候阈值与植物分布一致。优势植物的气候包络与花粉类群的气候包络在一定程度上基本一致。然而,对于大多数在科水平上鉴定的花粉分类群,如杜鹃花科,菊科,禾本科和藜科,两个数据集之间存在一些明显的气候范围偏移。本研究基于大陆尺度的数据集,首次提供了与花粉和植物分布相关的丰富的温度和降水信息,可用于全球生态建模和第四纪古气候重建。
The geographical distribution of dominant plant species in China was georeferenced and climatic variables were interpolated into all grids. Accordingly, the percentage distributions of principal pollen taxa based on 1860 surface pollen sites in China were selected and the related climate values were interpolated with the same method. The geographical and climatic comparison between the two datasets indicated that the climate threshold of most pollen taxa from surface pollen is coherent with plant distributions. The climatic envelopes of dominant plant are mostly accordant with those of pollen taxa at certain levels. However, some distinct offsets of the climate ranges exist between the two datasets for most pollen taxa identified at family level, such as Ericaceae, Asteraceae, Poaceae and Chenopodiaceae. The present study provides for the first time rich information on temperature and precipitation in relation to pollen and plant distribution based on the datasets on a continental scale useful for global ecological modeling and Quaternary palaeoclimate reconstruction.
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