水土保持研究2011，Vol.18Issue(5)：104-107,4.
黄土坡面不同土地利用方式对土壤有机碳流失的影响
Effects of Different Land Use Patterns on Soil Organic Carbon Loss on the Loess Slope
摘要
Abstract
Slope land use pattern has a close relationship with generation of runoff and sediment as well as soil organic carbon loss.A study on the runoff,sediment and organic carbon loss was conducted in 6 runoff plots on a slope in Yangou watershed.The plots were used as bare land,harvested grassland,grassland,harvested shrub land,shrub land and Robinia pseudoacacia L.woodland respectively.The results showed that the yields of runoff and sediment were negatively correlated with the vegetation coverage under different land use patterns;the losses of soluble organic carbon along with the runoff loss followed the order of bare landharvested grasslandgrasslandharvested shrub landshrub landRobinia pseudoacacia L.woodland;the losses of soil organic carbon along with the sediment followed the order as that bare landgrasslandshrub landRobinia pseudoacacia L.woodland.It is also can be seen that most of lost soil organic carbon from the total loss coupled with the transfer of the sediment,whereas only a small part of organic carbon in the soluble form lost along with runoff.Therefore,it is suggested that the key way to control runoff,sediment yield and soil organic carbon loss is to increase the vegetation coverage on the loess slope.关键词
土地利用方式/土壤有机碳流失/水土流失/黄土坡面Key words
land use pattern/soil organic carbon loss/soil and water loss/loess slope分类
管理科学引用本文复制引用
邓瑞芬,王百群,刘普灵,刘栋,徐佳..黄土坡面不同土地利用方式对土壤有机碳流失的影响[J].水土保持研究,2011,18(5):104-107,4.基金项目
国家科技支撑项目农田水土保持关键技术研究与示范 （）
中国科学院战略性先导科技专项“应对气候变化的碳收支认证及相关问题” （）
黄土高原土壤侵蚀与旱地农业国家重点实验室自主课题 （）
