摘要
对闽南沿海贫瘠山地火力楠人工林的生物生产力及营养特性研究表明,20a生火力楠林分的地上部生物量达100.83t/hm2,林分平均生物生产力达5.04t.hm-2.a-1,其中以杆材的生物量为最高,达59.63t.hm-2,占59%。说明,在闽南沿海山地的一般立地条件下,火力楠是适合作为用材林来培育;各器官的生物量与其养分积累量不成正比,叶、枝的生物量虽小,但所积累的养分量却较高,叶、枝在火力楠人工林生态系统中对调节营养平衡起着极其重要的作用;火力楠人工林对N、K、Ca、Mg等营养元素的需求量较大,对Mn、Fe有很强的富集能力。
The study on the biomass productivity and nutrition characteristic of Michelia macclurei in the coastal infertile mountain areas of southem Fujian and the results showed that aerial parts biomass of Michelia macclurei stands were 100.83t/ha and the average biomass productivity was 5.04t·ha^-1·a^-1 at the ages of 20a. The biomass of bole was greatest among them and it was reach 59.63t/ha, possessive proportion was 59% of the total. That indicated Michelia macclurei was adapt to cultivate by way of woedforesty in generic woodland of coastal mountain of southem Fujian; The biomass various organs are not positive correlation with their nutrient accumulation, the biomass of leaves and bark was smaller but their nutrient accumulation was more, they play an extremely important part in nutrient balance and soil fertility conservation in ecosystem. The growth of Michelia macclurei demands for a big amount of nutrient elements of N,N,K,Ca and Mg,and has an enrichment action on the micro dements of Mn and Fe in a certain degree.
出处
《青海农林科技》
2007年第1期13-16,共4页
Science and Technology of Qinghai Agriculture and Forestry
基金
福建省林业科技项目<火力楠用材林栽培生物学特性与培育利用技术研究>(闽林科2001-10)
关键词
火力楠
生物生产力
营养特性
闽南
沿海山地
Michelia macclurei
Biomass productivity
Nutrition characteristic
Southem of Fujian
Coascalinfertile mountain land
