湛江某红树林片区群落特征及其与表土孢粉组合的关系

Community Characteristics of a Mangrove Area in Zhanjiang and Its Relationship with Topsoil Pollen Assemblage

摘要: 红树林是重要的生态资源，在净化海水、保护海岸带、调节气候、保护生物多样性等方面有着重要作用。对湛江市麻章区后头村独立红树林区域进行调查研究，通过实地样方调查、无人机解译和表土孢粉的采样分析，判断该区域红树林群落的主要类型和空间分布以及与表土孢粉组合的关系。研究结果表明：1) 红树林区域中无瓣海桑、蜡烛果、海揽雌、木榄为主要树种。2) 通过无人机解译的方法可以较为准确地反应红树林区域主要树种和群落分布特征。该方法适用于较小红树林区域的研究，并具有一定优势。3) 表土孢粉的组合能正确地反应红树林植被的组成和主要优势种类。结合三种方法的研究对比，可以更准确地反应红树林群落的特征，弥补单一研究方法的不足。

Abstract: Mangroves are important ecological resources and natural coastal shelterbelts, which play an im-portant role in purifying sea water, regulating climate and protecting biodiversity. Taking the mangrove area in Houtou Village, Zhanjiang City as the research area, this paper aims to analyze the main types and spatial distribution of mangrove communities in study area, and examine the rela-tionship between the community and the topsoil pollen assemblage through investigating plenty of sample plots, interpreting Unmanned Aerial Vehicle (UAV) images and analyzing pollen data from surface samples. The results show that first, Sonneratia apetala, Sonneratia pyrifolia, Sapphyllum sanguinalis and Olea xylem were the main species in the mangrove area. Second, by interpreting UAV images can accurately reflect the main tree species and community distribution characteristics in mangrove area, it has notable advantages for small mangrove area. Third, topsoil pollen assem-blage can accurately reflect the composition and dominant species of mangrove vegetation. Through the comparison of the three methods, the characteristics of mangrove community can be more ac-curately reflected, making up for the deficiency of a single research method.