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龙眼洞林场红锥人工林林下植物组成研究
洪 维,廖宇杰,陈富强,李仕裕,张干荣,魏雪莹,邢福武,王发国
1.广东省龙眼洞林场;2.中国科学院华南植物园
摘要:
研究以广东省龙眼洞林场平均年龄 12 a 生红锥 Castanopsis hystrix 人工林为调查研究对象，在野外实地调查及查阅标本和相关资料的基础上，对红锥人工林的林下植物组成进行了分析，目的是为更进一步了解林场的林分经营和林下植物物种多样性的关系。研究结果显示样地中共出现 44 科 54 属 62种（变种、亚种）植物，其中草本和灌木数量比例较大，林下灌木和草本植物明显优势的物种有九节Psychotria asiatica 、散穗弓果黍 Cyrtococcum patens var. latifolium、半边旗 Pteris semipinnata 等，木本植物中红锥为明显优势种。将红锥人工林与米槠 Castanopsis carlesii 人工林、桉树 Eucalyptus urophylla 人工林、杉木 Cunninghamia lanceolata 人工林和马尾松 Pinus massoniana 半自然林进行比较研究，结果表明马尾松半自然林林下物种组成最为丰富，其次为桉树人工林、米槠人工林和杉木人工林；红锥人工林林下物种组成比杉木人工林组成丰富，少于其他三者 , 这与主要造林树种、林分郁闭度、营林措施等方面因素有关。
关键词:  红锥  人工林  林下植物  物种组成  广东省龙眼洞林场
DOI：
分类号:
基金项目:广州市野生动植物保护管理办公室项目 (SYZFCG-[2017]032)；广东省龙眼洞林场植物本底调查研究项目（Y934111001）
Study on Plant Composition of Castanopsis hystrix Plantation Forest in Longyandong Forest Farm of Guangdong Province
Hong Wei1, Liao Yujie2, Chen Fuqiang1, Li Shiyu2, Zhang Ganrong1, Wei Xueying2, Xin Fuwu2, Wang Faguo1,3,2,3,4,3
1.Longyandong Forest Farm of Guangdong Province,Guangzhou;2.Guangdong Provincial Key Laboratory of Applied Botany,South China Botanical Garden,Chinese Academy of Sciences;3.China;4.University of Chinese Academy of Sciences
Abstract:
Based on field investigation, specimens study and literature review, the plantation forest composition of Castanopsis hystrix in Longyandong Forest Farm of Guangdong province was analyzed in order to explore the relationship between forestry management and plant species diversity. The results showed that there were 62 species (including varieties and subspecies) that group into 44 families and 54 genera in the sample plots, among which the genera number of herbs and shrubs were larger. The obviously dominant species of understory shrubs and herbs are Psychotria asiatica, Cyrtococcum patens var. latifolium, Pteris semipinnata, and so on. The Castanopsis hystrix are obviously dominant species in arbor layer. We compared forest composition under different plantation forests of C. hystrix with C. carlesii, Eucalyptus urophylla, Cunninghamia lanceolata andPinus massoniana semi-natural forests, and the results showed that species under the semi-natural forest of P. massoniana are most abundant, followed by plantation forests of Eucalyptus urophylla, Castanopsis carlesii and Cunninghamia lanceolata, respectively. In addition, the species composition of Castanopsis hystrix plantation forest is more abundant than that of Cunninghamia lanceolata, but less than that of other three forest types, which may be related to the main afforestation tree species, forest canopy density, forest measures and other factors.
Key words:  Castanopsis hystrix  plantation forests  understory plants  plant composition  Longyandong Forest Farm of Guangdong province