期刊论文

中文

水土保持学报

1009-2242

2014

28

4

200-205

10.13870/j.cnki.stbcxb.2014.04.037

国家“十二五”科技支撑计划专题（2012BAD2280505） 湖南省教育厅项目（12C0440）

本校为第一机构

基于福寿林场杉木林不同深度(15, 30,45,60 cm)土壤有机碳与理化性质的实测数据,对比分析3个龄组杉木林土壤有机碳含量与理化性质的变化特征,并采用通径分析方法分析其相关性。结果表明:3个龄组杉木林的土壤有机碳含量均呈现随土层深度增加而减少的规律,幼龄林、中龄林和成熟林0 —15 cm 土层有机碳含量分别是15-30cm 土层的2.0,2. 2,2. 2倍,30-45 cm 土层的4.0,3. 6,3. 2倍,45-60 cm 土层的6. 1,3. 9,3. 6倍,同一龄组内不同土层间土壤有机碳含量的变异系数均大于65%,幼龄林的变异程度最大。方差分析表明0-15 cm 土层与15 cm以上的各土层有机碳含量存在显著性差异(P30-45 cm>15-30 cm>0-15cm,但...

Organic carbon and physic-chemical properties of soil at different depths （15, 30, 45, 60 cm） in Chinese fir plantations in Fushou forest farm of Hunan Province were analyzed for the variation characteris- tics of organic carbon content and physic-chemical properties of soil in three age-group Chinese fir planta- tions, and their relations were studied through path analysis. Results showed that the contents of soil organ- ic carbon （SOC） declined along with the increase of soil depths in three forest soil. The contents of SOC of juvenile, m...