Changes in Soil Hot-Water Extractable C,N and P Fractions During Vegetative Restoration in Zhifanggou Watershed on the Loess Plateau

查看全文 作　　者：UE [1,2]Sha;LI [3]Peng;LIU Guo-[1,2]bin;LI Zhan-[1,2]bin;ZHANG [1,2]Chao

机构地区：[1]State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau of Northwest A&F University;[2]Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry Water Resources;[3]Key Laboratory of Northwest Water Resources and Environment Ecology,Ministry of Education/Xi’an University of Technology

出　　处：《Journal of Integrative Agriculture》索引2013年第12卷第12期,共10页

基　　金：financially supported by the Strategic Technology Project of Chinese Academy of Sciences,China(XDA05060300);the Science and Technology Research and Development Program of Shaanxi Province,China(2011KJXX63);the Fundamental Research Funds for the Central Universities,China(ZD2013021) 摘　　要：The study was conducted in Zhifanggou Watershed,Shaanxi Province,China,to evaluate the effect of different vegetation types on hot-water extractable C,N and P fractions,with the aim to determine whether hot-water extractable fractions could be used as indicators of soil quality change in Loess Plateau.The six vegetation types established in 1975 were(i)Robinia pseudoacacia L.,(ii)Caragana korshinkii Kom.,(iii)Pinus tabulaeformis Carr.,(iv)P.tabulaeformis-Amorpha fruticosa L.,(v)R.pseudoacacia-A.fruticosa,and(vi)grassland.A cropped hillslope plot and a Platycladus orientalis L.native forest plot were used as references.The results indicated that the conversion of native forest to cropland resulted in a significant decline in the hot-water extractable C,N and P fractions.Hot-water extractable C,N,and P increased when cultivated land was revegetated,but after 30 years the amount of hot-water extractable C,N,and P in revegetated fields was still much lower compared to native forest.Hot-water extractable fractions increased more under mixed-forest than under pure-forest stands.Furthermore,there was a significant correlation between the hot-water extractable fractions and soil chemical and microbiological properties.The results showed that hot-water extractable fractions could be used as indicators of soil quality change on the Loess Plateau. 关键词：土壤质量变化热水提取纸坊沟流域黄土高原植被恢复磷形态碳氮

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Changes in Soil Hot-Water Extractable C,N and P Fractions During Vegetative Restoration in Zhifanggou Watershed on the Loess Plateau

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