Impacts of organic materials returning on redistribution of soil labile organic carbon fractions in a Chinese Mollisols
Labile organic carbon is the most active part of soil organic matter. Because of their dynamic nature, labile fractions of organic carbon such as microbial biomass organic C (MBC), light fraction organic C ( LFOC) and water -soluble organic C ( WSOC) pools can respond rapidly to the changes in C supply. Such components have therefore been suggested as early indicators of the effects of soil management on soil organic matter quality, even soil quality (Gregorich et al. 1994; Haynes et al. 1996). Owing to long -term inappropriate farming practice, Mollisols (black soils) tend to degrade over time in Northeast China, and chemical fertilizers and different kinds of organic materials were applied to improve soil fertility. This paper described how soil organic matter quality, as estimated using labile organic matter fractions ( LFOC, MBC and WSOC), is influenced by various organic materials returning systems in a Mollisols.
organic materials returning lfoc mbc wsoc mollisol
Yao Liang Xiaozeng Han
Key Laboratory of Mollisols Agroecology, National Observation Station of Hailun Agroecosystem,Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081,China
国际会议
哈尔滨
英文
104-105
2010-07-13（万方平台首次上网日期，不代表论文的发表时间）