热带亚热带植物学报Issue(6)：489-495,7.DOI:10.3969/j.issn.1005-3395.2013.06.001
鼎湖山季风常绿阔叶林不同生境蕨类植物的叶片功能性状研究
Leaf Functional Traits of Ferns from Different Habitats in Monsoon Evergreen Broad-leaved Forest in Dinghushan Mountain
摘要
Abstract
The aim was to understand the leaf function of ferns grown under different habitats. The leaf characters of six ferns, such as speciifc leaf area, gas exchange rates, leaf nutrients, construction cost, and carbon isotope ratio, in monsoon evergreen broad-leaved forest in Dinghushan Mountain were measured, and their adaption to environment were studied. The results showed that two epiphytic ferns (Microsorum fortuneandPseudodrynaria coronans) had low speciifc leaf area (SLA) and photosynthetic rates (Aarea), but high leaf construction cost (CCarea) and carbon isotope ratio (δ13C). In contrast, two terrestrial ferns (Adiantum flabellulatumandAlsophila spinulosa) showed high Aarea and relative low δ13C.Hicriopteris chinensisgrowing on bared rocks at forest edge had the lowest leaf phosphorus contents, and the highest photosynthetic phosphorus use efficiency among the six fern species, whileSelaginella delicatulagrowing in streamside had the highest SLA, and the lowest CCarea and δ13C. Therefore, it was suggested that there were close relationship between leaf traits of ferns and environment. In addition, because of high energy investment and low photosynthetic rate, epiphytic ferns have low adaption ability to environment, their survive might be under great pressure.关键词
蕨类植物/比叶面积/光合速率/构建成本/水分利用效率Key words
Fern/Speciifc leaf area/Photosynthetic rate/Construction cost/Water use efifciency引用本文复制引用
宋娟,李荣华,朱师丹,叶清..鼎湖山季风常绿阔叶林不同生境蕨类植物的叶片功能性状研究[J].热带亚热带植物学报,2013,(6):489-495,7.基金项目
中国科学院知识创新工程重要方向项目(KSCX2-EW-J-28)资助 （KSCX2-EW-J-28）
