南昌工程学院学报Issue(4)：23-27,5.
植被恢复过程中芒萁对侵蚀红壤碳氮库的影响
Effects of dicranopteris dichotoma on soil organic carbon and soil total nitrogen during revegetation process in red soil erosion area
摘要
Abstract
Dicranopteris dichotoma is the most important understory vegetation in the eroded area of red soil in southern China,but its contribution to the accumulation of soil organic carbon(SOC)and soil total nitrogen(STN)is poorly understood. In this study,this paper quantifies SOC and STN storage between D. dichotoma-covered soil(MQ)and soil without D. dichotoma coverage(CK)in a severely eroded land and two Pinus massoniana plantations(PM)(10-year-old and 30-year-old). Results show that:The cov-erage and biomass of MQ sees the lowest in the severely eroded land,but it increases significantly in 10-year-old and 30-year-old Pinus massoniana. The SOC and STN storage of MQ treatment are significantly higher than those in the bare land of CK(P ﹤ 0. 05). Compared to severely eroded land,SOC storage in-crease by 153% and 296% in 10-year-old and 30-year-old Pinus massoniana,respectively,and the figure for STN is 24% and 101% . Such results imply that the accumulation rate of SOC is faster than that of STN with Pinus massoniana treatment,and the C:N ratio is generally higher with MQ covered than in bare land. In conclusion,D. dichotoma has a significant effect on SOC and STN accumulation in red soil erosion regions.关键词
芒萁/土壤有机碳/土壤全氮,植被恢复/侵蚀红壤Key words
Dicranopteris dichotoma/soil organic carbon/soil total nitrogen/revegetation/eroded red soil分类
农业科技引用本文复制引用
陈坦,江军,杨燕华,吕茂奎,胥超,付林池,杨玉盛,谢锦升..植被恢复过程中芒萁对侵蚀红壤碳氮库的影响[J].南昌工程学院学报,2014,(4):23-27,5.基金项目
国家自然科学基金资助项目（31370465）；973计划前期专项课题 （）
