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首页> 美国卫生研究院文献>Plant Diversity >Asian monsoon shaped the pattern of woody dicotyledon richness in humid regions of China
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Asian monsoon shaped the pattern of woody dicotyledon richness in humid regions of China

机译：亚洲季风影响了中国潮湿地区木本双子叶植物丰富度的格局

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摘要

Understanding how geographical patterns of plant richness are established is a key scientific question in ecology and biogeography. Climate factors, such as environmental energy, water availability, and rainfall seasonality, have been widely proposed to account for geographical patterns of plant richness at large scales. Using a compiled distribution data set of 3166 native woody dicotyledons across 732 calibration grids at the county level in humid regions of China, we explored the geographical pattern of woody dicotyledon richness and its relationship to climatic variations, especially the Asian monsoonal climate. We found that species richness decreases with increasing latitude. Our study indicates that water availability (particularly mean annual precipitation, MAP) is the major abiotic factor in determining large-scale distribution patterns of species richness. Moreover, the seasonality of rainfall variables under the Asian monsoon climate largely contributes to species richness, because species richness correlates more significantly with precipitation during the three driest consecutive months (P3DRY) than precipitation during the three wettest consecutive months (P3WET). Therefore, we conclude that woody dicotyledon richness in humid regions of China is mainly affected by the Asian winter monsoon.
机译：了解如何建立植物富裕的地理模式是生态学和生物地理学中的关键科学问题。人们广泛提出了气候因素，例如环境能源，水的可利用性和降雨的季节性，以大规模地解释植物丰富度的地理格局。利用中国湿润地区县级732个标定网格上的3166个原生木本双子叶植物的分布数据集，我们探索了木本双子叶植物丰富度的地理格局及其与气候变化的关系，尤其是亚洲季风气候。我们发现物种丰富度随着纬度的增加而降低。我们的研究表明，水的可利用性（特别是年平均降水量，MAP）是决定物种丰富度大规模分布模式的主要非生物因素。此外，亚洲季风气候下降雨变量的季节性很大程度上影响了物种丰富度，因为与三个最潮湿的连续月份（P3WET）相比，连续三个最干旱月份（P3DRY）物种丰富度与降水的相关性更大。因此，我们得出的结论是，中国潮湿地区的木本双子叶植物丰富度主要受亚洲冬季风的影响。

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