水土保持学报2018，Vol.32Issue(1)：46-53,58,9.DOI:10.13870/j.cnki.stbcxb.2018.01.008
南方典型红壤区不同水保措施下坡面产流产沙及稀土迁移特征
Characteristics of Slope Runoff and Sediment Yield and REEs Migrations Under Different Soil and Water Conservation Measures in a Typical Red Soil Region of Southern China
摘要
Abstract
Five kinds of soil and water conservation measures in a typical red soil region in Changting County of Fujian Province were studied,the data of slope runoff,sediment yield and rare earth elements(REEs) migration were collected to reveal the benefits soil and water conservation measures on runoff and sediment reduction and rare earth migration resistance.The results showed that:(1) The average annual runoff reduction rates and the average annual sediment reduction rates of five kinds of soil and water conservation measures (the whole slope coverd by grass,closed forest,low-effect masson pine fertilization,mixture of trees with shrubs and herb,enrichment planting masson pine) were 65.41％,69.29％,63.42％,86.19％,72.59％ and 91.87％,84.21％,81.54％,94.13％,and 81.75％,respectively.(2) Under the rainfall,the REEs migration intensity of runoff and sediment were 85.13％,94.86％,66.89％,95.46％,93.10％ and 89.92％,80.38％,70.18％,93.38％,and 92.73％ lower than those in control plot under five kinds of soil and water conservation measures,respectively,of which,the peak occurred in moderate rain.(3) The LREE migration intensity of runoff were 55.68％,40.38％,85.76％ and 85.94％ lower than HREE migration intensity under five kinds of soil and water conservation measures except the whole slope covered by grass,and the HREE migration intensity of sediment were 82.29％,81.25％,78.38％,75.35％ and 77.05％ lower than LREE migration intensity under five kinds of soil and water conservation measures.In summary,five kinds of soil and water conservation measures have markedly benefits of runoff and sediment reduction and REE resistance,especially for of the mixture of trees with shrubs and herb.The results provide scientific basis and empirical support for making the best use the role of soil and water conservation measures applying in ecological restoration and rare earth migration.关键词
南方典型红壤区/长汀县/水保措施/减水减沙/稀土迁移Key words
typical red soil region of Southern China/Changting County/soil and water conservation measures/runoff and sediment reduction/rare earth migration分类
农业科技引用本文复制引用
张青青,陈志强,陈志彪,马倩怡..南方典型红壤区不同水保措施下坡面产流产沙及稀土迁移特征[J].水土保持学报,2018,32(1):46-53,58,9.基金项目
福建省自然科学基金项目“南方稀土矿区芒萁的生态化学计量特征及其稀土迁移阻控效应”(2017J01462) （2017J01462）
