草业学报2012，Vol.21Issue(2)：18-25,8.
不同植被类型对毛乌素沙地土壤有机碳的影响
Effect of different vegetation types on soil organic carbon in Mu Us desert
摘要
Abstract
Through comparing the concentration and inventory of soil organic carbon (SOC) and its distribution in soil profiles under nine different vegetation types in the Mu Us desert,the effect of different vegetation types on SOC were studied.The order of the concentration and inventory of SOC in the 0 - 80 cm soil layer were: I-ris lactea var.chinensis community>Achnatherum splendens community> Salix matsudana community>Artemisia ordosica community on fixed sandy land> Salix psammophila community>Artemisia ordosica community on semifixed sandy land>farmland> Caragana intermedia community > shifting sandy land.With an increase of soil depth,the SOC concentration showed a significant accumulation in the A.ordosica community (fixed sandy land),C.intermedia community,S.matsudana community,A.splendens community,I.lactea var.chinensis community and farmland,but was gradually reduced in the A.ordosica community (semifixed sandy land),shifting sandy land and S.psammophila community.The distributions in soil profiles of SOC inventory and SOC concentration under each vegetation type were similar but differed in amplitude of variation.Vegetation construction on shifting sand would contribute to soil carbon sequestration and the A.ordosica and S.psammophila communities had better effects.Strong human disturbance should be reduced or avoided to prevent the change of carbon in shallow soil layers and to keep the stability of the soil carbon pool.关键词
毛乌素沙地/植被类型/土壤有机碳Key words
Mu Us desert/vegetation type/soil organic carbon分类
农业科技引用本文复制引用
丁越岿,杨劼,宋炳煜,呼格吉勒图,张琳..不同植被类型对毛乌素沙地土壤有机碳的影响[J].草业学报,2012,21(2):18-25,8.基金项目
国家牧草产业技术体系项目(CARS-35)和内蒙古自然科学基金重大项目(20080404ZD06). （CARS-35）
