[1]巢林,林晗,吴承祯,等.千年桐(Aleurites montana)人工林细根特征及其与细根N、C含量的关系[J].山地学报,2015,(01):33.
　CHAO Lin,LIN Han,WU Chengzhen,et al.Fine Root Characteristics and Relationship among Morphology, Biomass and Tissue N and C Contents of Aleurites montana Plantation[J].Mountain Research,2015,(01):33.
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千年桐(Aleurites montana)人工林细根特征及其与细根N、C含量的关系()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2015年01期
页码:
33
栏目:
山地研究
出版日期:
2015-02-01

文章信息/Info

Title:
Fine Root Characteristics and Relationship among Morphology, Biomass and Tissue N and C Contents of Aleurites montana Plantation
作者:
巢林;林晗;吴承祯;刘艳艳;贾兰霞;洪滔;谢安强;陈建忠;洪伟;
福建农林大学林学院;福建省高校森林生态系统过程与经营重点实验室;武夷学院生态与环境学院;福建省建阳市林业局;
Author(s):
CHAO Lin; LIN Han; WU Chengzhen; LIU Yanyan; JIA Lanxia;  HONG Tao; XIE Anqiang; CHEN Jianzhong; HONG Wei
1.College of Forestry ，Fujian Agriculture and Forestry University，Fuzhou 350002，China； 2.Key Laboratory of Fujian Forest Ecological System Process and Management，Fuzhou 350002，China； 3.College of Ecology Resources Engineering, Wuyi University，Wuyishan 354300，China； 4.Foresty Bureau of Jianyang City, Jiangyang, Fujian 354200，China
关键词:
千年桐; 细根; 细根特征; 细根碳氮含量
Keywords:
Aleurites montana; fine root; fine root characteristics; fine roots tissue carbon and nitrogen contents
分类号:
Q948
文献标志码:
A
摘要:
采用完整土块法,以千年桐(Aleurites montana)人工林为研究对象,测定了1~5级细根的形态、生物量和组织碳(C)、氮(N)含量,分析了不同径级和序级与细根形态指标的差异性,对序级与细根生物量、碳氮含量及它们之间的关系进行探讨。结果表明:直径≤1 mm的细根根尖数、根系累计长度、根系累计表面积分别占据总量的99.66%,88.42%,69.82%;随着根序从1级根到5级根升高,千年桐细根直径由0.86 mm增加到1.35 mm,组织密度由0.11 g/cm3上升到0.47 g/cm3,根表面积密度由0.46 m2/m3降低到0.085 m2/m3,比根长由32.04 m/g减少到1...
Abstract:
Taking Aleurites montana plantation as the object, measured root morphology, biomass, carbon and nitrogen concentration of the first five orders roots. Analyzed differences between different diameter, root orders and morphological parameter, relationships of fine root biomass, C and N concentration with fine root orders by means of regression were discussed. The results showed that the root tips, accumulative root length and surface area of root d≤1mm accounted for the majority of total roots, accounting for the total respectively as 99.66%，88.42%，6982%；Along with the fine root ascending from the first to fifth order, root diameter increased from 0.86 mm to 1.35 mm, tissue density rose from 0.11 g/cm3 to 0.47 g/cm3, root surface area density decreased from 0.46 m2/m3 to 0.085 m2/m3, specific root length reduced from 32.04 m/g to 16.41 m/g; Fine root diameter, specific root length, surface area density, tissue density, biomass with root order can be represented by quadratic, exponential, linear, cubic or Gaussian peak functions; From the first to fifth fine root order contribution to the total biomass respectively as 18.7%，30.9%，27.1%，16.6%，6.7%; Fine root tissue N concentration reduced from 16.73 mg/g to 11.83 mg/g, C concentration increased from 454.97 mg/g to 494.43 mg/g with ascending fine root order; Moreover, C/N ratio in roots was mainly affected by tissue N rather than tissue C concentrations, the former affected reached 93%, the later only reached 50%; These results suggested that there are systematic differences in fine root morphology and structure, biomass, and tissue carbon and nitrogen contents among different root orders，this provides an important basis for understanding fine root architecture and function of Aleurites montana.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2014-03-11；改回日期(Accepted) : 2014-06-30。
基金项目（Foundation item）：国家自然科学基金(30671664)、教育部博士学科专项基金(200803890010)、福建省科技厅重点项目(2011N0002)。[The National Natural Science Foundation of China(No. 30671664); The National Ministry of Education Foundation For Ph d program(200803890010) ;Science Foundation of the Committee of Science and Technology of Fujian Province(No. 2011N0002).]
作者简介（Biography）：巢 林(1988-)，男，安徽六安人，硕士研究生，主要从事数量森林经理研究。[ Chao Lin， (1988- ), Male, born in Lu’an of Anhui Province, master degree student, mainly engaged in forest management.] E-mail:fjchaolin@126.com *
通信作者(Corresponding author)：吴承祯，博士，教授，主要从事森林生态学等方面研究。[Wu Chengzhen, Ph d, professor, mainly engaged in forest ecology.] Tel:0591-87640103，E-mail：fjwcz@126.com第1期 巢 林，等：
更新日期/Last Update: 1900-01-01