Effect of Simulated N Deposition on Soil Exchangeable Cations in Three Forest Types of Subtropical China

查看全文 作　　者：LU Xian-[1,5]Kai;MO Jiang-[1,2]Ming;[2]P.GUNDERSERN;ZHU Wei-[3]Xing;ZHOU Guo-[1]Yi;LI De-[1,5]Jun;[4]ZHANGXu

机构地区：[1]Dinghushan Forest Ecosystem Research Station, South China Botanical Garden, Chinese Academy of Sciences, Zhaoqing 526070 China;[2]Danish Centre for Forest, Landscape and Planning, University of Copenhagen, Hoersholm Kongevej 11, DK-2970 Hoersholm Denmark;[3]Department of Biological Sciences, State University of New York, Binghamton, NY 13902-6000 (USA);[4]Nanjing Agricultural University, Nanjing 210095 China;[5]Graduate University of the Chinese Academy of Sciences, Beijing 100049 China

出　　处：《Pedosphere》索引2009年第19卷第2期,共10页

基　　金：Project supported by the National Natural Science Foundation of China(No.30670392);the Knowledge Innovation Program of the Chinese Academy of Sciences(Nos.KZCX2-YW-432 and KSCX2-SW-133) 摘　　要：The effects of simulated nitrogen(N)deposition on soil exchangeable cations were studied in three forest types of subtropical China.Four N treatments with three replications were designed for the monsoon evergreen broadleaf forest (mature forest):control(0 kg N ha-1 year-1),low N(50 kg N ha-1 year-1),medium N(100 kg N ha-1 year-1)and high N(150 kg N ha-1 year-1),and only three treatments(i.e.,control,low N,medium N)were established for the pine and mixed forests.Nitrogen had been applied continuously for 26 months before the measurement.The mature forest responded more rapidly and intensively to N additions than the pine and mixed forests,and exhibited some significant negative symptoms,e.g.,soil acidification,Al mobilization and leaching of base cations from soil.The pine and mixed forests responded slowly to N additions and exhibited no significant response of soil cations.Response of soil exchangeable cations to N deposition varied in the forests of subtropical China,depending on soil N status and land-use history. 关键词：交换性阳离子亚热带森林土壤酸化森林类型氮沉降模拟可交换季风常绿阔叶林

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Effect of Simulated N Deposition on Soil Exchangeable Cations in Three Forest Types of Subtropical China

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