不同土地管理措施对在独联体乌拉尔地区的重壤质草皮灰化土壤中的腐植酸转化的影响

摘要

The elemental composition and structure of humic acids were studied in heavy loamy soddy-podzolic soils of the Cis-Urals region under different land management practices. The humic acids in the soil of the long-term clean fallow, overgrown fallow(abandoned plot), and crop rotation plots differed in their com position and properties. The humic acids in the soils of the crop rotation with the regular application of manure and of the overgrown fallow were enriched in the components of both their central(nuclear) and peripheral parts. Such a structure ensured the active participation of humic acids in the carbon cycle with the simultaneous preservation of the soil’s fertility.%对不同土地管理措施下独联体乌拉尔地区的重壤质草皮灰化土壤中的腐植酸的元素组成和结构进行研究。腐植酸的组成和性能在长期清洁休耕地,杂草丛生休耕地（荒废的土地）和轮作休耕地是不同的。定期使用肥料的轮作地和杂草丛生休耕地的土壤中的腐植酸,富含主要的（核心的）和次要的部分。这样的结构确保了腐植酸积极参与碳循环且同时保存了土壤的肥力。