期刊论文

中文

林业资源管理

1002-6622

2014

6

104-109

10.13466/j.cnki.lyzygl.2014.06.023

湖南省教育厅项目（12C0440） “十二五”国家科技支撑计划专题（2012BAD22B0505）

本校为第一机构

对湖南省平江县福寿林场3个龄组杉木林土壤有机碳含量变化特征及其与土壤理化性质的相关性进行了研究。结果表明：3个龄组杉木林的土壤有机碳含量都呈现出了随土层深度增加而减少的规律。0～15cm 土层有机碳的含量分别是15～30cm，30～45cm，45～60cm 土层有机碳含量的1.6～3.9倍，2.4～4.6倍，2.7～6.5倍。在0～45cm 土层内，随着杉木林的生长发育，土壤有机碳含量呈现出了幼龄林较高，中龄林最低，成熟林最高的变化特征。土壤有机碳与全氮之间有极显著的正相关性，与土壤 C ／N 和全磷存在显著的正相关性，与土壤容重存在显著的负相关性，与土壤全钾和 pH 值相关性不显著。

A study was made to investigate the contents of soil organic carbon（SOC） and its relations with soil physic-chemical properties in three age-group Chinese fir plantations in Fushou Forest Farm of Hunan Province. Results showed that the contents of SOC declined with the increase of soil depths in the soil of three forests. The contents of SOC in 0 - 15 cm soil layer was from 1. 6 to 3. 9 times as much as those in15 - 30 cm,from 2. 4 to 4. 6 times as much as those in 30 - 45 cm and from 2. 7 to 6. 5times as much as those in 45 - 60 cm,respectiv...