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氮、水交互对长白山阔叶红松林细根形态及生产量的影响

郭伟 宫浩 韩士杰 金阳 王译焓 冯圆 王存国

郭伟, 宫浩, 韩士杰, 金阳, 王译焓, 冯圆, 王存国. 氮、水交互对长白山阔叶红松林细根形态及生产量的影响[J]. 北京林业大学学报, 2016, 38(4): 29-35. doi: 10.13332/j.1000-1522.20150436
引用本文: 郭伟, 宫浩, 韩士杰, 金阳, 王译焓, 冯圆, 王存国. 氮、水交互对长白山阔叶红松林细根形态及生产量的影响[J]. 北京林业大学学报, 2016, 38(4): 29-35. doi: 10.13332/j.1000-1522.20150436
GUO Wei, GONG Hao, HAN Shi-jie, JIN Yang, WANG Yi-han, FENG Yuan, WANG Cun-guo. Effects of nitrogen-water interaction on fine root morphology and production in a mixed Pinus koraiensis forest in Changbai Mountains, northeastern China[J]. Journal of Beijing Forestry University, 2016, 38(4): 29-35. doi: 10.13332/j.1000-1522.20150436
Citation: GUO Wei, GONG Hao, HAN Shi-jie, JIN Yang, WANG Yi-han, FENG Yuan, WANG Cun-guo. Effects of nitrogen-water interaction on fine root morphology and production in a mixed Pinus koraiensis forest in Changbai Mountains, northeastern China[J]. Journal of Beijing Forestry University, 2016, 38(4): 29-35. doi: 10.13332/j.1000-1522.20150436

氮、水交互对长白山阔叶红松林细根形态及生产量的影响

doi: 10.13332/j.1000-1522.20150436
基金项目: 

国家自然科学基金项目(31500354)、国家自然科学基金重点项目(41330530)、森林与土壤生态国家重点实验室开放基金课题(LFSE2015-12)

详细信息
    作者简介:

    郭伟,博士。主要研究方向:植物生态学。Email: guowei_233@163.com 地址:110866 辽宁省沈阳市沈河区东陵路120号沈阳农业大学农学院。
    责任作者: 韩士杰,研究员,博士生导师。主要研究方向: 森林界面生态学。 Email : hansj@iae.ac.cn 地址:110016 辽宁省沈阳市沈河区文化路72号中国科学院沈阳应用生态研究所

    郭伟,博士。主要研究方向:植物生态学。Email: guowei_233@163.com 地址:110866 辽宁省沈阳市沈河区东陵路120号沈阳农业大学农学院。
    责任作者: 韩士杰,研究员,博士生导师。主要研究方向: 森林界面生态学。 Email : hansj@iae.ac.cn 地址:110016 辽宁省沈阳市沈河区文化路72号中国科学院沈阳应用生态研究所

Effects of nitrogen-water interaction on fine root morphology and production in a mixed Pinus koraiensis forest in Changbai Mountains, northeastern China

  • 摘要: 土壤养分和水分的变化深刻影响着森林生态系统的碳分配,进而影响树木细根形态结构和生产量。本文以我国长白山阔叶红松林为研究对象,研究氮沉降增加(50 kg/(hm·a))和降雨量减少(30%穿透雨,约210 mm/a)情形下,细根形态结构和生产量的时空响应特征。结果表明,细根形态结构和生产量受多种因素(处理、取样时间、取样层次)的共同影响。施氮样地(N)显著降低了0~10 cm土壤层细根直径,从而增加了比根长, 减少降雨样地(D)细根根长密度增加了1.55~3.24倍,细根生产量增加了104 g/(m·a), 减少降雨同时施氮样地(DN)10~20 cm土壤层细根直径和生产量显著增加。因此,长白山阔叶红松林不同土壤层细根在氮和水分吸收功能上可能存在分化,氮沉降增加、降雨格局变化及其交互作用在不同程度上驱动着细根形态和生产量的时空变化。

     

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  • 收稿日期:  2015-11-06
  • 刊出日期:  2016-04-30

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