| 华南亚热带中部山地垂直植被带表土孢粉散布规律与气候相关性 |
| |
| 引用本文： | 全晓文,黄康有,水坤春,李宏卫,谢德豪,左锦堂,岑彩凤,郑卓.华南亚热带中部山地垂直植被带表土孢粉散布规律与气候相关性[J].热带地理,2022,42(10):1597-1608. |
| |
| 作者姓名： | 全晓文 黄康有 水坤春 李宏卫 谢德豪 左锦堂 岑彩凤 郑卓 |
| |
| 作者单位： | 1.中山大学 地球科学与工程学院/广东省地球动力作用与地质灾害重点实验室，广东 珠海 519082;2.南方海洋科学与工程 广东省实验室，广东 珠海 519082;3.广东南岭国家级自然保护区，广东 韶关 512727;4.广东省地质调查院，广州 510080 |
| |
| 基金项目： | 国家自然科学基金(42077414);广东省引进人才创新创业团队项目(2016ZT06N331┫——环南海地质过程与灾害创新团队);第四纪冰期旋回对南岭生物多样性影响调查研究项目(2021GJGY001) |
| |
| 摘 要： | 孢粉学分析是古生态与古气候定量重建的重要指标之一，建立现代表土孢粉与植被之间的定量关系是利用地层孢粉准确解释古生态与古气候变化的前提条件。基于华南亚热带中部山地垂直植被带采集的113个现代表土和苔藓孢粉样品，采用典型对应分析方法（Canonical Correspondence Analysis, CCA），探讨研究区不同海拔表土孢粉种类散布规律与气候因子之间的关系。主要得出以下结论：1）华南亚热带中部地区现代表土孢粉组合中乔木类以壳斗科栲属、常绿栎属、松属、杉木属和大戟科等种类占绝对优势，草本植物花粉以禾本科、蒿属、菊科和莎草科为主，蕨类孢子以三缝孢子、芒萁属、水龙骨科和单缝孢子为主。2）研究区低海拔至高海拔的孢粉组合呈现以下变化规律：低海拔地区（0~702 m）孢粉组合以栲属、常绿栎属、松属、野桐属、枫香属、茜草科以及禾本科花粉为主；中海拔（703~1 299 m）山坡的优势孢粉为栲属、杉木属、松属和常绿栎属；高海拔地区（1 300~1 600 m）以栲属、常绿栎属、水青冈属、杜鹃花科以及松属花粉最为丰富，表土孢粉组合变化过程与现代植被群落优势种类有较好的一致性。3）CCA分析结果显示，控制研究区域主要表土孢粉分布的气候因子为年均降雨量（MAP）、最热月降水（Mpwa）和最热月温度（Mtwa）；松属、杉木属、栲属、常绿栎属、山茶科、水青冈属和落叶栎属等高百分比含量的花粉所对应的气候特征较为明显。4）低海拔地区的优势种属栲属、常绿栎属等以及相对高海拔的松属、杉木属和水青冈属等能较好地反映气候因子对植被空间分布的影响。因此，文章揭示了华南亚热带中部地区表土孢粉在垂直植被带上具有明显差异，孢粉散布规律可能与研究区植被组成、生境、花粉形态与传播媒介等因素有关，能为利用化石孢粉数据进行古生态与古气候定量重建提供参考资料。
|
| 关 键 词： | 华南亚热带 垂直植被带 表土孢粉 气候因子 |
| 收稿时间： | 2021-12-05 |
Relationship of Surface Pollen with Climate and Vertical Vegetation Communities in Subtropical Mountainous in Southern China |
| |
| Xiaowen Quan,Kangyou Huang,Kunchun Shui,Hongwei Li,Dehao Xie,Jintang Zuo,Caifeng Cen,Zhuo Zheng.Relationship of Surface Pollen with Climate and Vertical Vegetation Communities in Subtropical Mountainous in Southern China[J].Tropical Geography,2022,42(10):1597-1608. |
| |
| Authors: | Xiaowen Quan Kangyou Huang Kunchun Shui Hongwei Li Dehao Xie Jintang Zuo Caifeng Cen Zhuo Zheng |
| |
| Institution: | 1.School of Earth Sciences and Engineering, Sun Yat-sen University, Zhuhai 519082, China;2.Guangdong Provincial Laboratory of Southern Ocean Science and Engineering, Zhuhai 519082, China;3.Nanling National Nature Reserve, Guangdong Province, Shaoguan 512727, China;4.Guangdong Institute of Geological Survey, Guangzhou 510080, China |
| |
| Abstract: | Pollen analysis is one of the environmental proxies useful for quantitative reconstruction of paleoecology and paleoclimate, and the establishment of a quantitative relationship between surface pollen and vegetation is crucial for accurate interpretation of paleoecology and paleoclimate from fossil pollen. In this study, to explore the relationships between surface pollen assemblages and vegetation and altitude, 113 samples of modern surface pollen and moss were collected from the vertical vegetation zones in central south subtropical China. Based on the results of Canonical Correspondence Analysis (CCA), the study revealed the connections between the distribution of pollen taxa at different elevations and with various climate factors. The main results are as follows: 1) Castanopsis, Quercus-evergreen, Pinus, Cunninghamia and Euphorbiaceae were the dominant pollen taxa of the arbors, and Poaceae, Artemisia, Compositae, and Cyperaceae were the main components of the herbs. Trilete, Dicranopteris, Polypodiaceae and Monolete accounted for a high percentage of the fern pollen. 2) The relationships between pollen taxa and altitude could be divided into three patterns: Castanopsis, Quercus-evergreen, Pinus, Mallotus, Liquidambar, Rubiaceae,and Poaceae were common at the low altitudes (0-702 m). In the medium altitude area (703-1,299 m), there were significant pollen contents in Castanopsis, Cunninghamia,Pinus, Quercus-evergreen, Ericaceae and Pinus. The higher altitude area, at around 1,300-1,600 m, was dominanted by Castanopsis, Quercus-evergreen, and Fagus. Therefore, the distribution of surface pollen is consistent with that of modern vegetation. 3) The results of CCA showed that the climate factors controlling the distribution of surface pollen were Mean Annual Precipitation (MAP), Mean precipitation of warmest season (Mpwa), and Mean temperature of warmest season (Mtwa). It was obvious that the climate characteristics corresponded to high percentage values of various pollen, such as Pinus, Cunninghamia, Castanopsis, Quercus-evergreen, Theaceae, Fagus, and Quercus-deciduous. 4) The significant taxa of Castanopsis, Quercus-evergreen at lower elevations and Pinus, Cunninghamia and Fagus where grow at relatively high area can reflect the effects of climate factors on the spatial distribution of vegetation. Therefore, the results of this study indicated that the surface pollen assemblage varies significantly through the vertical vegetation zones in central south subtropical China. The characteristics of surface pollen dispersal were greatly influenced by the vegetation composition in the region, the habitat, pollen morphology, and the pollen transmission process, which provides a crucial reference for quantitative reconstruction of paleoecology and paleoclimate from fossil pollen data in a subtropical region. |
| |
| Keywords: | subtropical southern China vertical vegetation surface pollen climate variable |
|
| 点击此处可从《热带地理》浏览原始摘要信息 |
| 点击此处可从《热带地理》下载免费的PDF全文 |
|
