海洋科学2017，Vol.41Issue(6)：26-33,8.DOI:10.11759/hykx20160106001
红树植物外来种无瓣海桑对乡土种秋茄形态特征与生物量的影响
Impacts of alien species Sonneratia apetala on morphological characteristics and biomass of native species Kandelia candel
摘要
Abstract
This paper examines the morphological plasticity, biomass accumulation, and biomass allocation of the native species Kandelia candel, which has been influenced by the alien species Sonneratia apetala. The experi-mental sample plots are located in Zhangzhou city, Zhangpu county, Fujian Province, in relation to the project,"Coastal wetland prevention and ecological restoration of Spartina demonstration bases in Dongshan Bay", where four types of quadrats are established: a monoculture of K. candel with a planting space of 0.25 m × 0.25 m (Ⅰ), the alien species S. apetala with respective planting spacing of 0.5 m × 0.5 m (Ⅱ), 1 m × 1 m (Ⅲ), and 2 m × 2 m. (Ⅳ) is planted with K. candel at a planting space of 0.25 m × 0.25 m in an artificial mixed forest. The results show that the morphological indicators (H, D) and biomass (AGB, BGB, TB, R/S) of K. candel are significantly (or very significantly) lower in the three mixed sample plots than in the monoculture sample plot in different seasons. This suggests that by planting S. apetala with a decreased spacing, the morphological index and biomass of K. candel will significantly reduce. Morphological characteristics R/S and BGB show very significantly allometric relations with AGB. In addition, the allomatric relation index and coefficient of determination of mixed sample plots are significantly lower than that of K. candel in the monoculture sample plot, and with a decrease in the planting space of S. apetala there is a significantly decreasing trend in the slope between BGB and BGB. These results imply that K. candel underwent an ontogenetic drift and that the morphological plasticity, biomass accumulation, biomass growth rate, and biomass pattern are significantly inhibited to some extent by planting S. apetala. The ontogenetic drift is more obvious with a decrease in the S. apetala planting spacing, and the inhibition of morphological plasticity, biomass accumulation, biomass growth rate, and biomass pattern of K. candel is significantly strengthened to some extent. Results show that the alien species S. apetala uses a number of methods to invade the native species K. candel.关键词
无瓣海桑/秋茄/生物量/异速生长/根冠比/入侵Key words
Sonneratia apetala/Kandelia candel/biomass/allometry/root to shoot mass ratio/invasion分类
农业科技引用本文复制引用
陈国贵,李元跃,蔡丽钦,徐佳佳,林沛然,陈文城,黄森磊..红树植物外来种无瓣海桑对乡土种秋茄形态特征与生物量的影响[J].海洋科学,2017,41(6):26-33,8.基金项目
A major project of production, teaching and research coop-eration in Fujian province, No.2006Y4001 （）
key experiment project on island and coastal management of Fujian province, No.CIMTS-2014-02福建省高校产学合作重大项目(2006Y4001) （2006Y4001）
福建省海岛、海岸带管理重点实验项目(CIMTS-2014-02) （CIMTS-2014-02）
