摘要
研究了闽南毛竹群落中几种常量元素的累积情况，结果表明，在整个毛竹群落现存量中Ｎ、Ｐ、Ｓｉ、Ｋ、Ｃａ和Ｍｇ总累积量分别为１３．９６、２．８９、７０．０４、４１．２９、５．８４和３．６３ｇ·ｍ－２．在毛竹的各组分中，竹叶中的各种元素含量均最高，竹鞭中元素含量也较多．６种元素中，Ｓｉ的浓度最高，平均为１．６０％，Ｋ次之，平均为０．５５％．Ｓｉ在叶中含量最高，达１５．６０ｇ·ｍ－２，Ｎ和Ｋ在竹杆中含量最高，分别为６．５８和２０．６７９·ｍ－２．林下植物根中Ｓｉ含量也高达１１．４５ｇ·ｍ－２．竹叶中Ｓｉ含量很高还表明了它是从叶中含Ｓｉ量低的木本植物向合Ｓｉ量高的禾草进化的过渡类型．
Studies on the accumulation and distribution of nutrient elements in Phyllostachyspubescens community of South Fujian show that the total accumultaion amount of N,P,Si,K, Ca and Mg is respectively 13. 96, 2. 89, 70. 04, 41. 29, 5. 84 and 3. 639· m-2. Indifferent parts of Phyllostachys pubescens, leaf has the highest amount of these elements,and whip is the second. Among these 6 elements, Si has the highest concentration,1. 60% on average, and K is the second, 0. 55% on average. The content of Si is thehighest in leaves, being 15. 609· m-2, and that of N and K is the highest in stems, beingrespectively 6. 58 and 20. 679· m-2. The roots also contain a higher content of Si, being11. 459· m-2. The high content of Si in leaves indicate that bamboo is a transitional typefrom woody plant (which has a lower content of Si) to grass (which contains more Si).
出处
《应用生态学报》
CAS
CSCD
1995年第S1期9-13,共5页
Chinese Journal of Applied Ecology
基金
福建省自然科学基金
关键词
毛竹群落
营养元素
元素含量
Phyllostachys pubescens community, Nutrient element, Element content.
