福建林学院学报2011，Vol.31Issue(2)：97-101,5.
不同林龄木麻黄人工林细根养分现存量动态
Dynamics of standing crop of nutrient and energy for fine roots of Casuarina equisetifolia plantations
摘要
Abstract
Seasonal dynamics of standing crop of nutrient for fine roots of Casuarina equisetifolia plantations of different ages was studied at Chihu forestry center of Hui'an County, Fujian Province. The results showed as follows: The standing crop of nutrients was higher in living fine roots than in dead fine roots for different aged C. equisetifolia plantations. The higher standing crop of nutrients in January, July and November than in other months responded to environmental conditions and the growth status of roots. The standing crop of nutrient increased and then decreased with forest ages. For living fine roots, standingcrop of N, P, K and C reached the highest in 30-year-old plantation, while Ca and Mg in 18-year-old plantation. However, the standing crop of nutrients in dead fine roots increased gradually from 6 to 42-year-old plantations. So season and forest age would be responsible for the nutrient uptake.关键词
木麻黄/细根/养分/季节动态Key words
Casuarina equisetifolia/ fine root/ nutrient/ seasonal dynamics分类
农业科技引用本文复制引用
吴锡麟,叶功富,张立华..不同林龄木麻黄人工林细根养分现存量动态[J].福建林学院学报,2011,31(2):97-101,5.基金项目
国家"十一五"科技支撑计划资助项目(2009BADB2B0302) （2009BADB2B0302）
国家林业局南方山地用材林培育重点实验室资助项目. （）
