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Position: Home > Articles > Carbon Stock and SOC Stability in Soils of Pinus-sylvestris Scattered Grassland in Horqin Sandy Land Journal of Anhui Agricultural Sciences 2013,41 (15) 6681-6683

科尔沁沙地樟子松疏林草地土壤有机碳及其稳定性特征

作  者:
林宝珠;王琼
单  位:
辽宁石油化工大学生态环境研究院;辽宁大学
关键词:
樟子松;土层;土壤有机碳;土壤微生物量碳;土壤易氧化碳
摘  要:
[目的]探讨科尔沁沙地半干旱区樟子松疏林草地土壤有机碳及其稳定性。[方法]通过分析林内0~5、5~10、10~20和20~30cm层土壤有机碳(SOC)、土壤微生物量碳(MBC)以及土壤易氧化有机碳(Clab)含量,揭示樟子松疏林草地SOC含量及其稳定性。[结果]樟子松疏林草地SOC含量随土层深度的增加而降低,由表层(0~5 cm)的6.77 g/kg降到深层(20~30 cm)的3.51 g/kg,下降了约48%;MBC在土壤空间分布上表现为先降低后增加,Clab含量呈相同的变化趋势。[结论]随着土层深度的增加,樟子松疏林草地Clab含量升高,表明樟子松疏林草地SOC的稳定性随土壤深度的增加而降低。
译  名:
Carbon Stock and SOC Stability in Soils of Pinus-sylvestris Scattered Grassland in Horqin Sandy Land
作  者:
LIN Bao-zhu et al(Liaoning University,Shengyang,Liaoning 110036)
关键词:
Pinus-sylvestris;Soil layers;Soil organic carbon;Microbial biomass carbon;Labile carbon
摘  要:
[Objective] To explore the soil organic carbon and its stability of semi-arid Pinus sylvestris woodland grassland in Horqin sandy land.[Method] The soil organic carbon(SOC),soil microbial carbon(MBC),oxidation of labile carbon(Clab) content in soil depth of 0-5 cm,5-10 cm,10-20 m and 20-30 cm were determined.And soil organic carbon content and stability was revealed.[Result] The results showed that the soil organic carbon content decreases with the increase of soil depth,in the surface layer(0 to 5 cm) is 6.77 g/kg,deep(20 to 30 cm) is 3.51 g/kg,decreases by about 48%.MBC in the soil spatial distribution shows first decreases and then increases,and Clab has the same trend.[Conclusion] Visible with the increase of soil depth,Pinus-sylvestris woodland grassland soil easily decomposed carbon increase,the stability of soil organic carbon decreases with soil depth increase.

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