水土保持学报2009，Vol.23Issue(5)：248-252,5.
土地利用对沼泽湿地土壤碳影响的研究
Effects of Land Use Change on Carbon Contents of Marsh Soil in the Sanjiang Plain
摘要
Abstract
Land use has been changed drastically under the influence of human activity since the middle of the twentieth century, and it affects soil carbon contents importantly. The effects of land use change on carbon contents in marsh soils in Sanjiang Plain were studied by selecting two typical marshes; Carex lasiocarpa marsh and Deyeuxia angustifolia marsh. The results indicated that soil carbon contents were mostly controlled by water condition and soil carbon contents in Carex lasiocarpa marsh (long-waterlogged marsh) were higher than in Deyeuxia angusti folia marsh (short-waterlogged marsh). Total carbon (TO, soil organic carbon (SOC), soil inorganic carbon (SIC) and dissolved organic carbon (DOC) in Carex lasiocarpa marsh soil were (258. 4 ± 81. 9)g/kg,(203. 7±62. 4)g/kg,(54. 7±19. 4)g/kg,(4. 8 ± 0. 85)g/kg and which in Deyeuxia angusti folia marsh soil were (99. 4±24. 2)g/kg,(81. 4±24. 5)g/kg, (17. 9±9. 8)g/kg 和(2. 4 ± 0. 27)g/kg, respectively. Reclamation led in soil carbon contents decreased remarkably. TC and SOC were both negatively correlative with tillage years. Degradation of marsh resulted in the reduction of soil carbon contents. Marsh restoration increased soil carbon contents, but the rates of TC and SOC were low. Soil pH was an important factors affecting soil carbon.关键词
三江平原/沼泽湿地/土地利用变化/土壤碳Key words
Sanjiang plain/marsh/land use change/soil carbon分类
农业科技引用本文复制引用
江长胜,王跃思,郝庆菊,王定勇..土地利用对沼泽湿地土壤碳影响的研究[J].水土保持学报,2009,23(5):248-252,5.基金项目
国家自然科学基金项目(40805050) （40805050）
教育部博士点新教师基金(200806351014) （200806351014）
重庆市科技计划项目(CSTC,2009AC7011) （CSTC,2009AC7011）
