College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, Shenzhen University, Shenzhen, China; Futian-CityU Mangrove Research and Development Centre, City University of Hong Kong, Hong Kong, China.
College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, Shenzhen University, Shenzhen, China.
Mar Pollut Bull. 2020 Mar;152:110897. doi: 10.1016/j.marpolbul.2020.110897. Epub 2020 Jan 20.
Laguncularia racemosa and Sonneratia apetala are fast-growing exotic mangrove species in Southern China and widely used for afforestation. However, the invasiveness of the two exotic species is still unclear. We compared structural and physiological traits and energy-use related traits between L. racemosa and S. apetala, and with two natives (Kandelia obovata and Aegiceras corniculatum) in northern Fujian. Results showed that leaf construction cost based on mass (CCM) and caloric values of L. racemosa were significantly lower than S. apetala, and the two natives had highest CCM. Because lower CCM, L. racemosa grew faster with a taller height (4.83 m) and wider ground diameter circumference (40.03 cm) than S. apetala (4.43 m tall and 35.63 cm wide) and the two natives (2.42 m tall and 26.78 cm wide). These findings indicated that L. racemosa could be more invasive than S. apetala in mangrove forests in northern Fujian, China where it still grew well, which deserves more attention.
拉关木和海桑是中国南方地区生长迅速的外来红树林物种，被广泛用于造林。然而，这两个外来物种的入侵性仍不清楚。我们比较了拉关木和海桑与北方福建的两种本地物种（秋茄和桐花树）在结构和生理特征以及与能量利用相关的特征方面的差异。结果表明，基于质量的叶片构建成本（CCM）和拉关木的热值明显低于海桑，而两种本地物种的 CCM 最高。由于 CCM 较低，拉关木的生长速度更快，高度为 4.83 米，地径周长为 40.03 厘米，高于海桑（高 4.43 米，地径周长 35.63 厘米）和两种本地物种（高 2.42 米，地径周长 26.78 厘米）。这些发现表明，拉关木可能比海桑更具入侵性，在中国北方福建的红树林中仍生长良好，值得更多关注。
