| 土壤增温对杉木幼苗细根生长量及形态特征的影响 |
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| 引用本文： | 陈望远,熊德成,史顺增,宋涛涛,蔡瑛莹,郭润泉,陈廷廷,郑欣,陈光水.土壤增温对杉木幼苗细根生长量及形态特征的影响[J].生态学报,2018,38(15):5305-5314. |
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| 作者姓名： | 陈望远 熊德成 史顺增 宋涛涛 蔡瑛莹 郭润泉 陈廷廷 郑欣 陈光水 |
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| 作者单位： | 福建师范大学湿润亚热带山地生态国家重点实验室培育基地;福建师范大学地理研究所 |
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| 基金项目： | 国家自然科学基金优秀青年基金项目（31422012）;福建省杰出青年基金项目滚动资助项目（2014J07005）;福建师范大学"大学生创新创业训练计划"（创新训练类）项目（201610394066） |
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| 摘 要： | 为了揭示杉木人工林对全球变暖的地下响应,在福建省三明市陈大国有林场开展杉木(Cunninghamia lanceolata)幼苗土壤增温试验,采用内生长环法探讨增温实验开始后第2年(2015年1月、7月取样)和第3年(2016年1月、7月取样)杉木幼苗细根生长量和形态特征(比根长,SRL;比表面积,SRA;组织密度,RTD)的变化。结果表明:(1)随着苗木的生长,土壤增温对细根生长量的影响趋势是先抑制,再无显著影响,最后促进。(2)土壤增温对细根形态特征的影响在不同取样时间有差异:土壤增温对7月份(夏季)取样的细根SRL或SRA有显著促进作用,对1月份(冬季)取样的细根SRL、SRA均无显著影响。(3)土壤增温对第二、第三次取样的1—2 mm细根RTD有促进作用。表明土壤增温对杉木幼苗细根生长量的影响与苗木生长阶段有关;同时苗木可通过细根形态的调整(增大SRL和RTD)以适应土壤增温引起的土壤资源变化和环境胁迫,维持自身的生长。
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| 关 键 词： | 土壤增温 细根 内生长环 细根生长量 细根形态 |
| 收稿时间： | 2017/8/23 0:00:00 |
| 修稿时间： | 2018/3/7 0:00:00 |
Effects of soil warming on fine root growth and morphology of Chinese fir (Cunninghamia lanceolata) seedlings |
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| CHEN Wangyuan,XIONG Decheng,SHI Shunzeng,SONG Taotao,CAI Yingying,GUO Runquan,CHEN Tingting,ZHENG Xin and CHEN Gunagshui.Effects of soil warming on fine root growth and morphology of Chinese fir (Cunninghamia lanceolata) seedlings[J].Acta Ecologica Sinica,2018,38(15):5305-5314. |
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| Authors: | CHEN Wangyuan XIONG Decheng SHI Shunzeng SONG Taotao CAI Yingying GUO Runquan CHEN Tingting ZHENG Xin and CHEN Gunagshui |
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| Institution: | State Key Laboratory of Subtropical Mountain Ecology(Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China;School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China,State Key Laboratory of Subtropical Mountain Ecology(Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China;School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China,State Key Laboratory of Subtropical Mountain Ecology(Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China;School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China,State Key Laboratory of Subtropical Mountain Ecology(Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China;School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China,State Key Laboratory of Subtropical Mountain Ecology(Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China;School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China,State Key Laboratory of Subtropical Mountain Ecology(Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China;School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China,State Key Laboratory of Subtropical Mountain Ecology(Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China;School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China,State Key Laboratory of Subtropical Mountain Ecology(Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China;School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China and State Key Laboratory of Subtropical Mountain Ecology(Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China;School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China |
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| Abstract: | |
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| Keywords: | soil warming fine roots in-growth donut fine root growth fine root morphology |
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