应用生态学报2012，Vol.23Issue(12)：3273-3280,8.
黑河中游典型土地利用方式下土壤有机碳与活性和非活性组分的关系
Relationships of soil organic carbon with its active and non-active components under different land use types in the middle reaches of Heihe River, China
摘要
Abstract
Taking the seven typical land use types ( paddy field, dry land, medium coverage grassland, saline-alkali field, bare land, desert, and sandlot) in the middle reaches of Heihe River as test objects, this paper studied the relationships of soil organic carbon content with its components. In the 0-100 cm soil profile, the contents of soil total organic carbon (TOC) , active organic carbon ( AOC) , and non-active organic carbon (NOC ) decreased with increasing depth. The soil TOC, AOC, and NOC contents differed with land use type. Land use change induced the increase or decrease of soil organic carbon content. The tillage in paddy field was an available way to increase the contents of soil TOC, AOC, and NOC. After land use change, soil NOC rather than AOC contributed more to soil TOC content. For the same land use types, soil AOC and NOC contents increased together with increasing soil TOC content, and the NOC content increased faster than the AOC content. The soil TOC content corresponding to the crossing point of the variation trend lines of soil AOC and NOC contents could be considered as the boundary point of TOC accumulation or loss, and the saturation capacities of soil AOC and NOC could be obtained by the variation trend lines of the AOC and NOC.关键词
土地利用/土壤有机碳/活性有机碳/非活性有机碳/黑河Key words
land use/ soil organic carbon/ active organic carbon/ non-active organic carbon/Heihe River分类
社会科学引用本文复制引用
张俊华,李国栋,王岩松,南忠仁,赵丽萍..黑河中游典型土地利用方式下土壤有机碳与活性和非活性组分的关系[J].应用生态学报,2012,23(12):3273-3280,8.基金项目
国家自然科学基金项目(41101088)、中国科学院知识创新工程重大项目(KZCX1-09)、河南省教育厅科学技术研究重点项目(12A170002)和广东高校优秀青年创新人才培育项目(LYM10080)资助. （41101088）
