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CAS Workshop on Ecosystem Succession Theory and Practice of Ecological Restoration 蕨类植物多样性对植被不同演替阶段的生态响应 严岳鸿
邢福武
易绮斐
秦新生 (中国科学院华南植物研究所，广州
510650) 摘要：广东新会古兜山自然保护区位于广东省中南部江门市地区，地处东经112°52′30″~ 113°03′25″，北纬22°5′00″~22°21′15″，境内保存有较大面积的地带性南亚热带季风常绿阔叶林。该地植被的自然演替系列依次为芒萁草丛、禾草草丛，岗松、桃金娘为建群种的灌草丛，以降真香、鸭脚木为建群种的山地疏林和以红花荷、华润楠等为建群种的山地常绿阔叶林。通过对不同演替系列中的蕨类植物群落的取样调查，样方面积为100m2
(5m*5m*4)，结果表明：（1）在各演替系列中，蕨类植物丰富度依次为6，9，15，15，反映了蕨类植物的物种多样性随着演替的进展而不断增加；（2）不同演替系列中阴生蕨类植物植物与阳生蕨类植物的比例分别是0，1/9，6/15，11/15，说明了随着演替的不断发生，阴生蕨类植物种类不断增加，阳生蕨类植物种类不断减少；（3）不同演替系列中热带性质的蕨类植物与温带性质的蕨类植物的比例依次是5/1，7/2，12/3，12/3，结果显示随着演替的不断发生，温带蕨类植物的种类有增加的趋势，但彼此的比例却均维持在该地区的区系平衡点附近。 关键词：蕨类植物；多样性；演替；生态响应 The
ecological response of fern diversity to different succession
vegetation Yan
Yuehong Xing Fuwu
Yi Qifei Qin
Xinsheng (South China
Institute of Botany, Chinese Academy of Sciences, Guangzhou 510650,
China) Abstract: Gudoushan
reserve, 112°52′30″~ 113°03′25″E and 22°5′00″~22°21′15″N,
which located at the south-centre of Guangdong Province in China.
There is large area of south subtropical monsoon evergreen broadleaf
forest remained. In this paper, the ferns in a series of vegetation
were surveyed, including in grasslands dominated by Dicranopteris
pedata and the gramineous, shrubbery dominated by Baeckea
frutescens and Rhodomyrtus
tomentosa, boscage dominated by Schefflera
octophylla and Acronychia
pedunculata, and upland evergreen broadleaf forest dominated by Machilus
Chinese and Rhodoleia
championii. The results showed that: (1) the species diversity of
ferns in different vegetation, 6, 9, 15 and 15 respectively, increased
with the succession of vegetation; (2) the proportion of shade ferns
and sun ferns, 0, 1/9, 6/15 and 11/15 respectively, increases with the
development of vegetation; (3) and the proportion of tropical ferns
and temperate ferns, 5/1, 7/2, 12/3 and 12/3, swings around 20%,
although the temperate ferns increase with the succession. Key Words:
ferns, diversity, succession, ecological response
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