摘要
探讨湖南省衡阳市紫色土丘陵坡地不同植被类型对土壤碳循环和土壤有机碳组分的影响。选取草地区(GZ)、草地森林区(GFZ)和森林区(FZ)0~10和10~20cm土层为研究对象,通过对其活性有机碳组分的研究,为土壤碳循环和不同植被类型对有机碳组分及稳定性的影响提供理论依据。结果表明:微生物量碳和易氧化有机碳大小顺序为FZ>GZ>GFZ(P<0.05),可溶性有机碳为FZ>GFZ>GZ(P<0.05),FZ轻组有机碳显著高于GZ和GFZ;0~10cm土层活性有机碳有效性高于10~20cm土层;相对于GFZ,GZ中草本植物能提高土壤活性有机碳含量。
In order to explore the effects of different vegetation types on soil carbon cycle and fractions of soil organic carbon pool on hillslope land with purple soils in Hengyang City of Hunan Province,China.Selecting the soil samples of 0~10 and 10~20 cm soil layers of grassland zone（GZ）,grassland-forest zone（GFZ）and forest zone（FZ）,the dynamics of soil active organic carbon（SAOC）composition were investigated to provide theory basis for the influence of soil carbon cycle and different vegetation types on the fractions of organic carbon pool and its stability.The results showed that：Microbial biomass carbon and easily oxidizable organic carbon followed the order of FZGZGFZ（P〈0.05）;Dissolved organic carbon followed the order of FZGFZGZ（P〈0.05）;light fraction organic carbon was the highest in FZ（P〈0.05）,and the second in GZ and GFZ;The availability of active organic carbon in 0~10 cm soil layer was higher than that in 10~20 cm soil layer;In comparison with GFZ,the herb in GZ could increase the contents of active organic carbon.
作者
杨满元
杨宁
YANG Man yuan;YANG Ning(College of Landscape Architectur,IIunan Environmentalt Biological Polytechnic College,IIengyang,IIunan Province 421005,China)
出处
《草地学报》
CAS
CSCD
北大核心
2018年第2期380-385,共6页
Acta Agrestia Sinica
基金
湖南省科技厅项目(S2006N332)
湖南省教育厅科学研究项目(16C0559)
湖南省普通高校青年骨干教师培养对象资助项目
湖南环境生物职业技术学院青年科研基金项目资助
关键词
土壤活性有机碳
不同植被类型
紫色土
湖南省衡阳市
Soil active organic carbon
Different vegetation types
Purple soils
Hengyang City of Hunan Province
