四川林业科技2012，Vol.33Issue(3)：16-20,5.
川西亚高山针叶林与针阔混交林凋落量及养分归还动态
Litter Production and Nutrient Return of Subalpine Coniferous Forest and Coniferous and Broad-leaved Mixed Forest in Western Sichuan
崔炳华 1蒋勇 2陈绍武 1晋明瑞 1胡开波 2王守强2
作者信息
- 1. 重庆市万州区林业局,重庆万州404000
- 2. 四川省林业调查规划院,四川成都610081
- 折叠
摘要
Abstract
In this paper, subalpine coniferous forest and coniferous and broad-leaved mixed forest in west- ern Sichuan were taken as the research object, and studies were made of litter production and nutrient（ N, P, K） return via collected litter of two forest types from January to December in 2007. The results indica- ted that mixed forest litter production （2 090. 47 kg · hm-2） was 43 % higher than coniferous forest litter production（ 1 189.59 kg · hm-2）, and the largest litter production happened in October. The contribu- tion of broad-leaved trees in mixed forest to the litter production was up to 69%. Meanwhile ,the nutrient return of the broad leaves was higher than that of the needle ones. And amount of nutrient return of two forest types showed the order in P 〉 K 〉 N. The litter nutrient return in coniferous and broad-leaved mixed forest was higher than that in coniferous forest. Therefore stronger self-fertility ability than coniferous forest. , subalpine mixed forest in western Sichuan had a关键词
川西亚高山/针叶林/针阔混交林/凋落量/养分归还量Key words
Subalpine area in western Sichuan/Coniferous forest/Coniferous and broad-leaved mixed for-est/Litter production/Nutrient return分类
农业科技引用本文复制引用
崔炳华,蒋勇,陈绍武,晋明瑞,胡开波,王守强..川西亚高山针叶林与针阔混交林凋落量及养分归还动态[J].四川林业科技,2012,33(3):16-20,5.
