海坛岛典型灌丛群落数量分类与排序

doi:10.17521/cjpe.2024.0249

摘要/Abstract

摘要： 灌丛作为海岛生态系统的典型植被, 广泛分布于中国各海岛, 具备保持水土、生物多样性保护等生态功能。该研究采用典型样方法在海坛岛共设置95个样方, 记录了物种组成、数量特征及生境等信息, 并采用双向指示种分析(TWINSPAN)和冗余分析(RDA)进行数量分类与排序。结果表明: 1)研究区典型灌丛分为以本土植物或外来植物为建群种的两类, 共有11个群系、23个群丛, 滨柃(Eurya emarginata)灌丛和车桑子(Dodonaea viscosa)灌丛为主要优势灌丛。2) RDA排序显示, 影响两类灌丛分布的环境因子存在显著差异。影响本土植物群落的主要环境因子是风速和年降水量, 其次是距海岸线距离、土壤水溶性盐总量和碱解氮含量, 而影响归化或入侵植物群落分布的因子尚不完全明确, 可能受多种因素影响。该研究提供了海坛岛灌丛的原始数据, 可填补该区域灌丛植被资料的空白, 为《中国植被志》的编撰及中国植被图的绘制提供重要基础资料。

关键词: 海坛岛, 灌丛群落, 数量分类, 双向指示种分析, 冗余分析

Abstract:

Shrublands are widely distributed across various islands in China. They have important ecological effects, such as conserving soil and water and protecting biodiversity. In this study, we established 95 sample plots on Haitan Island, Fujian, China, using a standard sampling method. Species composition, quantitative characteristics, and habitat information of the shrublands were recorded. Two-way indicator species analysis (TWINSPAN) and redundancy analysis (RDA) were employed for the numerical classification and ordination, respectively. The results showed that: 1) The typical shrublands in the study area can be classified into two categories, one dominated by native plants and the other by exotic species, including 11 alliances and 23 associations in total. Among them, Eurya emarginata and Dodonaea viscosa shrublands were the predominant alliances. 2) The RDA ordination revealed that the shrublands dominated by native species and by exotic species were different in the factors affecting the distribution. The native plant communities were mainly influenced by wind speed and mean annual precipitation, followed by distance from the coastline, total soil soluble salts content, and available nitrogen content. However, the exotic plant communities were likely influenced by multiple factors but the main drivers remained unclear. This study provides original data on the shrublands of Haitan Island, filling the knowledge gap in the shrubland information in this area and offering important foundational information for the compilation of the Vegegraphy of China and the creation of the national vegetation map.

Key words: Haitan Island, shrubland communities, numerical classification, TWINSPAN, RDA

陈颖, 王迎雪, 邓清雅, 李培杨, 肖自新, 许艳蓉, 邓传远. 海坛岛典型灌丛群落数量分类与排序. 植物生态学报, 2025, 49(4): 653-666. DOI: 10.17521/cjpe.2024.0249

CHEN Ying, WANG Ying-Xue, DENG Qing-Ya, LI Pei-Yang, XIAO Zi-Xin, XU Yan-Rong, DENG Chuan-Yuan. Numerical classification and ordination of shrub communities on Haitan Island, Fujian, China. Chinese Journal of Plant Ecology, 2025, 49(4): 653-666. DOI: 10.17521/cjpe.2024.0249

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链接本文: https://www.plant-ecology.com/CN/10.17521/cjpe.2024.0249

https://www.plant-ecology.com/CN/Y2025/V49/I4/653

图/表 5

图1 海坛岛典型灌丛群落样方分布图。

Fig. 1 Distribution map of the sampling plots for the typical shrubland communities on Haitan Island.

图2 海坛岛灌丛群落双向指示种分析(TWINSPAN)分类树状图。D代表分类等级; n表示组内样方数; 1-95表示样方编号。

Fig. 2 TWINSPAN classification tree for the shrubland communities on Haitan Island. D, the classification level; n, the number of plots in the group; 1-95, sampling numbers.

方框1 滨柃灌丛分类检索表

Box 1 Identification key to the Eurya emarginata shrublands on Haitan Island

方框2 车桑子灌丛分类检索表

Box 2 Identification key to the Dodonaea viscosa shrublands on Haitan Island

图3 海坛岛以本土植物为建群种的灌丛群落与环境因子的冗余分析(RDA)图。AN, 碱解氮含量; D, 样方距海岸线距离; MAP, 年降水量; S, 土壤水溶性盐总量; TP, 全磷含量; WS, 风速。滨柃-山菅常绿阔叶灌丛群丛(样方编号为P41、P44、P45、P48、P49、P51、P52、P62); 滨柃-芒萁常绿阔叶灌丛群丛(P31-P37); 滨柃-五节芒常绿阔叶灌丛群丛(P15-P17、P50); 滨柃-有芒鸭嘴草常绿阔叶灌丛群丛(P56、P64、P68、P77-P80、P83); 滨柃-结缕草常绿阔叶灌丛群丛(P65-P67、P81、P82); 滨柃-狗牙根常绿阔叶灌丛群丛(P57-P63); 滨柃+车桑子-山菅常绿阔叶灌丛群丛(P46、P47); 车桑子-山菅常绿阔叶灌丛群丛(P53、P55、P74、P76、P84、P89、P90); 车桑子-鬼针草常绿阔叶灌丛群丛(P11-P14、P22、P30); 车桑子-芒常绿阔叶灌丛群丛(P18-P21、P23、P24、P26、P27); 车桑子-金丝草常绿阔叶灌丛群丛(P38-P40、P42、P43); 车桑子-白茅常绿阔叶灌丛群丛(P8); 车桑子+豺皮樟-山菅常绿阔叶灌丛群丛(P73); 豺皮樟-山菅常绿阔叶灌丛群丛(P72、P85-P88); 豺皮樟-狗尾草常绿阔叶灌丛群丛(P54、P71、P75); 福建胡颓子-鬼针草常绿阔叶灌丛群丛(P3)。

Fig. 3 Redundancy analysis (RDA) diagram illustrating the relationship between the native plant-dominated shrubland communities on Haitan Island and the environmental factors. AN, alkali hydrolyzed nitrogen content; D, distance of the sampling plot from the coastline; MAP, mean annual precipitation; S, total soil water-soluble salts content; TP, total phosphorus content; WS, wind speed. Eurya emarginata - Dianella ensifolia Evergreen Broadleaf Shrubland Association (plot number P41, P44, P45, P48, P49, P51, P52, P62); Eurya emarginata - Dicranopteris pedata Evergreen Broadleaf Shrubland Association (P31-P37); Eurya emarginata - Miscanthus floridulus Evergreen Broadleaf Shrubland Association (P15-P17, P50); Eurya emarginata - Ischaemum aristatum Evergreen Broadleaf Shrubland Association (P56, P64, P68, P77-P80, P83); Eurya emarginata - Zoysia japonica Evergreen Broadleaf Shrubland Association (P65-P67, P81, P82); Eurya emarginata - Cynodon dactylon Evergreen Broadleaf Shrubland Association (P57-P63); Eurya emarginata + Dodonaea viscosa - Dianella ensifolia Evergreen Broadleaf Shrubland Association (P46, P47); Dodonaea viscosa - Dianella ensifolia Evergreen Broadleaf Shrubland Association (P53, P55, P74, P76, P84, P89, P90); Dodonaea viscosa - Bidens pilosa Evergreen Broadleaf Shrubland Association (P11-P14, P22, P30); Dodonaea viscosa - Miscanthus sinensis Evergreen Broadleaf Shrubland Association (P18-P21, P23, P24, P26, P27); Dodonaea viscosa - Pogonatherum crinitum Evergreen Broadleaf Shrubland Association (P38-P40, P42, P43); Dodonaea viscosa - Imperata cylindrica Evergreen Broadleaf Shrubland Association (P8); Dodonaea viscosa + Litsea rotundifolia var. oblongifolia - Dianella ensifolia Evergreen Broadleaf Shrubland Association (P73); Litsea rotundifolia var. oblongifolia - Dianella ensifolia Evergreen Broadleaf Shrubland Association (P72, P85-P88); Litsea rotundifolia var. oblongifolia - Setaria viridis Evergreen Broadleaf Shrubland Association (P54, P71, P75); Elaeagnus oldhamii - Bidens pilosa Evergreen Broadleaf Shrubland Association (P3).

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