闽东沿海秋茄天然林与人工林生物量比较

闽东（福鼎市）是中国红树林（秋茄）自然分布的最北端，在红树林研究中具有十分重要的地位。采用标准木法以及收获法，研究闽东沿海不同起源秋茄林生物量及其分配规律。结果表明：秋茄天然林生物量为58．305t／hm2，地上部分为32．919t／hm2，地下部分为25．386t／hm2；人工林生物量为25．359t／hm2，地上部分为14．711t／hm2，地下部分为10．648t／hm2。花、叶、枝、干等生物量数据显示，秋茄种群生物量分配为枝〉干〉粗根〉叶〉中根〉墩〉细根〉花；生物量及器官分配反映了秋茄种群对高纬度生境的适应性。

Comparative Study on Biomass of the Natural Kandelia candel Forest and Its Plantation in the Coastal Area of East Fujian Province

Fuding Municipality in east part of Fujian Province is the northernmost part for natural distribution of mangrove forest in China, which plays an important role in mangrove study. The biomass and its distribution law of Kandelia candel forests in Fuding, costal area of Fujian Province with different origins were studied by applying standard plant method and harvesting method. The results showed that the total biomass of the natural K. candel forests was 58. 305 t/hm2 with the aboveground biomass for 32. 919 t/hm2 and the underground part for 25. 386 t/hm2. Whereas the total biomass of K. candel plantation in the same area was 25. 359 t/hm2, among which the aboveground part was 14.711 t/hm2 and the underground part was 10. 648 t/hm2 respectively. The study on the biomass distribution showed that the order by the biomass allocation for K. candel population was： twigs 〉 stems 〉 staple roots 〉 leaves 〉 mid roots 〉 stump 〉 fiber roots 〉 flowers. The characteristics of biomass of K. candel forest or plantation and the organ distribution explained its adaptability to high latitude habitat.