文献类型：期刊文献

中文题名：北亚热带天然次生林群落演替对土壤有机碳的影响

英文题名：Effects of Community Succession on Soil Organic Carbon in North Subtropical Areas

作者：马少杰[1] 李正才[1] 周本智[1] 格日乐图[1] 孔维健[1] 安艳飞[1]

第一作者：马少杰

机构：[1]中国林业科学研究院亚热带林业研究所

年份：2010

卷号：23

期号：6

起止页码：845-849

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：中央级公益性科研院所基本科研业务费专项资金项目(RISF060701);中国林业科学研究院院长基金项目(CAFYBB2008006)

语种：中文

中文关键词：北亚热带;天然次生林;群落演替;土壤有机碳;有机碳储量

外文关键词：north subtropical China; secondary natural forest; community succession; SOC; organic carbon storage

分类号：S718.5

摘要：以北亚热带受损天然次生林为研究对象,探讨了植被演替对土壤有机碳的影响。结果表明:(1)不同演替年限常绿阔叶林,土壤有机碳含量均随土壤深度的增加而减少并最终趋于稳定;土壤有机碳含量均随着演替年限的增加而不断增大,增加幅度在土壤剖面上呈现波动性;演替20 a到演替40 a群落土壤中的有机碳平均含量增加了56.30%(P<0.05)。(2)土壤有机碳储量随土层深度变化的趋势和土壤有机碳含量变化趋势基本一致:总体上随深度增加而减少,在60 70 cm土层出现波动;不同土壤层次土壤有机碳储量也随着演替年限增加,呈上升趋势,增加幅度在土壤剖面上也呈现出波动性,0 80 cm土层有机碳储量平均增加了56.01%。(3)该地区森林土壤碳储量总体上较低,平均为79.13.thm-2,且0 40 cm土层贮存的碳量比例相对其它地区要大,达到70%以上。(4)两种演替阶段,土壤有机碳含量与全氮、水解氮、速效磷、速效钾、速效钙、速效镁离子的含量均极显著相关。因此,应该加强亚热带森林的保护,促进天然次生林的正向演替,增加森林生态系统有机碳等的截留。
This paper deals with the effects of community succession on soil organic carbon（SOC） in north subtropical areas.The results showed that：（1） In the succession of evergreen broad-leaved forest,the SOC content decreased and gradually kept a constant level with the increasing of soil depths;the SOC content increased continuously during the secondary forest succession;On the soil profiles,the increasing degree of SOC showed fluctuation;the SOC content of two different succession courses raised by 56.30%（P0.05）.（2） The changing trend of SOC storage was almost the same as that of SOC content： on the whole,it decreased with soil depth,and appeared fluctuation in 60—70 cm;the SOC storage also increased in the community succession.On the soil profiles,the increasing degree of SOC storage showed fluctuation;the SOC storage in 0—80 cm soil layer raised by 56.01%.（3） As a whole,the SOC storage in this region was relatively low,with a mean value of 79.13 t·hm-2,and the percentage of SOC storage in 0—40 cm soil layer was higher than that of the other forest areas,which was more than 70%.（4） In two restoration stages,the SOC content had a significant correlation with total nitrogen and available N,P,K,Ca and Mg,so it is necessary to enhance the protection of forests in north subtropical areas,which would be beneficial for the forest succession and enhance the C sequestration of forest ecosystems.