福建林学院学报2013，Vol.33Issue(1)：18-24,7.
中龄和老龄杉木人工林凋落物量及养分归还
Litter production and nutrient return in 2 plantations of young and old Cunninghamia lanceolata
摘要
Abstract
The primary purpose of this study was to determine litter production, seasonal dynamics and nutrient return in 2 forests of young (16 year-old) and old (88 year-old) plantation of Cunninghanda lanceolata located at Wangtai in Nanping, Fujian, during a period of 2006 - 2008. The results showed as follows: Mean annual total litterfall in 2 years of observations varied from 2 879.2 kg·hm-2 in the 16 year-old C. lanceolata to 3 070.3 kg·hm-2 in the 88 year-old C. lanceolata, The fraction of litterfall in 16 year-old C. lanceolata was larger than that in 88 year-old C. lanceolata, while the other components were opposite. The ranking of nutrient concentration in each fraction were all showed as N>K>Pin the 2 plantations. Nutrient return of N, P, K content in the 2 plantations were 27.693, 1.160, 3.703 kg·hm-2 and 33.280, 1.907, 6.369 kg·hm-2 respectively. Litterfall of the two C. lanceolata plantations showed two-peak distribution pattern with two peaks in February ( or May) and November of each year, meanwhile the dynamics of N, P, K in nutrient return was consistent with litterfall.关键词
杉木/凋落物/养分归还/林龄Key words
Cunninghamia lanceolata/ litterfall/ nutrient return/ stand age分类
农业科技引用本文复制引用
郑金兴,熊德成,黄锦学,杨智杰,陈光水..中龄和老龄杉木人工林凋落物量及养分归还[J].福建林学院学报,2013,33(1):18-24,7.基金项目
福建省自然科学基金资助项目(D0510018 （）
2008J0124). （）
