| 土壤增温对杉木幼苗细根生理生态性质的影响 |
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| 引用本文： | 冯建新,熊德成,史顺增,许辰森,钟波元,邓飞,陈云玉,陈光水,杨玉盛.土壤增温对杉木幼苗细根生理生态性质的影响[J].生态学报,2017,37(1):35-43. |
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| 作者姓名： | 冯建新 熊德成 史顺增 许辰森 钟波元 邓飞 陈云玉 陈光水 杨玉盛 |
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| 作者单位： | 福建师范大学地理科学学院, 福州 350007;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, 福州 350007,福建师范大学地理科学学院, 福州 350007;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, 福州 350007,福建师范大学地理科学学院, 福州 350007;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, 福州 350007,福建师范大学地理科学学院, 福州 350007;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, 福州 350007,福建师范大学地理科学学院, 福州 350007;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, 福州 350007,福建师范大学地理科学学院, 福州 350007;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, 福州 350007,福建师范大学地理科学学院, 福州 350007;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, 福州 350007,福建师范大学地理科学学院, 福州 350007;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, 福州 350007,福建师范大学地理科学学院, 福州 350007;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, 福州 350007 |
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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）；国家973前期专项课题（2014CB460602）；福建省杰出青年基金项目滚动资助项目（2014J07005） |
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| 摘 要： | 为了揭示我国最重要人工林树种杉木对全球变暖的地下响应及其适应性,通过在福建省三明市陈大国有林场设置杉木(Cunninghamia lanceolata)幼苗土壤增温实验(增温+5℃和不增温两个处理,各5个重复),用土钻法和内生长环法探讨土壤增温约1年后的杉木幼苗细根生物量和形态特征(比根长,SRL;比表面积,SRA),化学计量学特征(C、N、P)和代谢特征(包括呼吸和非结构性碳水化合物,NSC)的变化。结果表明:1)与对照相比,土壤增温处理0—1 mm细根生物量显著下降,1—2 mm细根生物量没有变化,细根形态亦未有显著变化;2)土壤增温处理细根N浓度显著增加,细根P浓度没有显著变化,细根C/N显著降低而N/P显著增加;3)土壤增温处理细根呼吸没有出现驯化现象,细根NSC显著下降。可见,土壤增温改变了杉木细根生物量分配格局,并引起一定的营养失衡和代谢失衡现象,从而对杉木生长和生产力产生影响。
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| 关 键 词： | 土壤增温 细根 生物量 形态 化学计量学 呼吸 非结构性碳水化合物 |
| 收稿时间： | 2016/3/26 0:00:00 |
| 修稿时间： | 2016/7/11 0:00:00 |
Effects of soil warming on the ecophysiological properties of the fine roots of Chinese fir (Cunninghamia lanceolata) seedlings |
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| FENG Jianxin,XIONG Decheng,SHI Shunzeng,XU Chensen,ZHONG Boyuan,DENG Fei,CHEN Yunyu,CHEN Gunagshui and YANG Yusheng.Effects of soil warming on the ecophysiological properties of the fine roots of Chinese fir (Cunninghamia lanceolata) seedlings[J].Acta Ecologica Sinica,2017,37(1):35-43. |
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| Authors: | FENG Jianxin XIONG Decheng SHI Shunzeng XU Chensen ZHONG Boyuan DENG Fei CHEN Yunyu CHEN Gunagshui and YANG Yusheng |
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| Institution: | College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China,College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China and College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;State Key Laboratory of Subtropical Mountain Ecology(Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou 350007, China |
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| Abstract: | |
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| Keywords: | soil warming fine roots biomass morphology stoichiometry respiration nonstructural carbohydrates |
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