Luo Chuanxiu, Chen Muhong, Xiang Rong, Liu Jianguo, Zhang Lanlan, Lu Jun
CAS Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 Xingang Xilu, Guangzhou, 510301, China,
Int J Biometeorol. 2015 Apr;59(4):397-415. doi: 10.1007/s00484-014-0852-2. Epub 2014 Jun 15.
The authors conducted a palynological analysis based on different number of air pollen samples for the northern and southern parts of the South China Sea, respectively, in order to give a reference to reconstruct the paleoclimate of the area. (1) Fifteen air pollen samples were collected from the northern part of the South China Sea from August to September 2011, and 13 air pollen samples were collected from the southern part of the South China Sea in December 2011. The pollen types were more abundant in the north than in the south. The total pollen number and concentration in the north was 10 times more than that in the south, which may be because of the sampling season. Airborne pollen types and concentrations have a close relationship with wind direction and distance from the sampling point to the continent. (2) Seventy-four samples were collected from surface sediments in the northern part of the South China Sea in the autumn. Thirty-three samples were collected from surface sediments in the southern part of the South China Sea in the winter. Pollen concentrations in the north were nearly 10 times higher than that in the south. This is because trilete spores are transported by rivers from Hainan Island to the sea and also by the summer monsoon-forced marine current. (3) Ten air pollen samples and 10 surface sediments samples were selected for comparison. The pollen and spores in the air were mainly herbaceous and woody pollen, excluding fern spores, having seasonal pollen characteristics. Pollen in the surface sediments were mainly trilete, Pinus, and herbaceous, and may also show a combination of annual pollen characteristics.
作者分别对南海北部和南部不同数量的空气花粉样本进行了孢粉学分析，以便为重建该地区的古气候提供参考。（1）2011年8月至9月从南海北部采集了15个空气花粉样本，2011年12月从南海南部采集了13个空气花粉样本。北部的花粉类型比南部更为丰富。北部的花粉总数和浓度是南部的10倍多，这可能是由于采样季节的原因。空气中花粉的类型和浓度与风向以及采样点到大陆的距离密切相关。（2）秋季从南海北部的表层沉积物中采集了74个样本。冬季从南海南部的表层沉积物中采集了33个样本。北部的花粉浓度比南部高出近10倍。这是因为三缝孢子通过河流从海南岛输送到海洋，也通过夏季风驱动的海流输送。（3）选取了10个空气花粉样本和10个表层沉积物样本进行比较。空气中的花粉和孢子主要是草本和木本花粉，不包括蕨类孢子，具有季节性花粉特征。表层沉积物中的花粉主要是三缝孢子、松属和草本植物花粉，也可能呈现出年度花粉特征的组合。
