The analysis of natural regeneration and diffusion of the seedling of Sonneratia apetala in the Qi’ao Island, Zhuhai
LIAO Bao-wen1, TIAN Guang-hong2, YANG Xiong-bang2, TANG Guo-ling1,3, ZHANG Jia-en3
1. The Research Institute of Tropical Forestry, CAF, Guangzhou 510520, China; 2. Qi'ao–Dangan Provincial Nature Reserve, Zhuhai 5190002, China; 3. South China Agriculture University, Guangzhou 510642, China
Sonneratia apetala plays an active role in restraining the extend of Spartina alternifloral and restoring the mangrove wetland,however it is an introduced species S.apetala has been planted in the Qi'ao Island since 1999.This article surveyed the seed output and seedling natural diffuse of the S.apetala and its circumjacent wetland.The result showed that the output of the four year'old S.apetala in Qi'ao Island was 30.51 kg per tree per year,the number of the fruits was about 2706 per tree,and every fruit included 30 to 50 seeds.S.apetala seedlings were most distributed about 40 seedlings per 16m2 at ditches; secondary were about 8 seedlings per 16m2 at bare beaches near by the forest,about 3.5 seedlings per 16m2 inside the Spartina alterniflora,and the least were inside the forest of S.apetala with only 1 seedlings per 16m2.This study showed that the fruits were much more than seedlings,and perennial seedling was hard to see.Therefore,it was difficult for S.apetala to naturally regenerated and succeeded in the Qi'ao Island.
廖宝文1, 田广红2, 杨雄邦2, 唐国玲1,3, 章家恩3. 珠海淇澳岛无瓣海桑种苗天然更新与扩散分析[J]. , 2006, 25(6): 485-488.
LIAO Bao-wen1, TIAN Guang-hong2, YANG Xiong-bang2, TANG Guo-ling1,3, ZHANG Jia-en3. The analysis of natural regeneration and diffusion of the seedling of Sonneratia apetala in the Qi’ao Island, Zhuhai. , 2006, 25(6): 485-488.
