Ecological Distribution and Salt Tolerance of Terminalia catappa
- 生命科学－已发表论文 
调查了榄仁树(Terminalia catappa)在海南岛沿海地区的分布情况,并就基质盐度对温室中人工培育的榄仁幼苗的影响进行研究。结果表明,榄仁具有较强的耐盐能力,在盐度高达 17.09‰条件下仍可正常生长,温室里幼苗可在 10‰左右的盐度下存活。结果还表明,10‰盐度能增加幼苗叶片叶绿素含量,20‰～30‰则下降;盐胁迫下叶片光合速率呈下降趋势,而叶片可溶性糖含量则随盐度增加呈上升趋势。The distribution of Terminalia catappa on coast areas of Hainan Island was investigated, and the effects of substrate salinity on artificially cultured T. catappa seedlings in greenhouse are also studied. The results showed that T. catappa had a higher salt tolerance. It could grow normally in the soil with a salinity of 17.09‰. In the greenhouse, the seedling of T. catappa could survive at 10‰ salt treatment. The results also indicated that a salinity of 10‰ could increase the chlorophyll content in seedling leaves, which a salinity of 20‰～30‰ decreased; photosynthetic rate in leaves tended to decrease under salt stress, and soluble sugar content tended to increase with increasing salinity.