[1]邱岭军,胡欢甜,林宝平,等. 不同林龄杉木养分重吸收率及其C∶N∶P化学计量特征[J].西北林学院学报,2017,32(4):22-27.[doi:10.3969/j.issn.1001-7461.2017.04.04]
　QIU Ling-jun,HU Huan-tian,LIN Bao-ping,et al. Nutrient Resorption Efficiency and C∶N∶P Stoichiometry of Cunninghamia lanceolata Plantations with Different Ages[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(4):22-27.[doi:10.3969/j.issn.1001-7461.2017.04.04]
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 不同林龄杉木养分重吸收率及其C∶N∶P化学计量特征()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第4期
页码:
22-27
栏目:
出版日期:
2017-07-31

文章信息/Info

Title:
 Nutrient Resorption Efficiency and C∶N∶P Stoichiometry of Cunninghamia lanceolata Plantations with Different Ages
文章编号:
1001-7461(2017)04-0022-06
作者:
 邱岭军1; 2; 胡欢甜1; 2; 林宝平1; 2; 汪凤林1; 2; 林宇3; 何宗明1; 2*; 刘桌明1; 2
 (1.福建农林大学 林学院，福建 福州 350002;2.国家林业局 杉木工程技术研究中心，福建 福州 350002;3.福建省长乐大鹤国有防护林场，福建 长乐 350212)
Author(s):
 QIU Ling-jun1; 2; HU Huan-tian1; 2; LIN Bao-ping1; 2; WANG Feng-lin1; 2; LIN Yu3; HE Zong-ming1; 2*; LIU Zhuo-ming1; 2
 (1.Forestry College of Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China; 2.Chinese Fir Engineering Technology Research Center,State Forestry Administration,Fuzhou,Fujian 350002,China; 3.Changle Dahe State-Owned Protection Forest Farm of Fujian Province,Changle,Fujian 350212,China)
关键词:
 ; 杉木; C∶N∶P; 养分重吸收; 生态计量化学; 养分限制
Keywords:
Cunninghamia lanceolata;  C∶N∶P;  resorption efficiency;  egcological stoichometry;  nutrition limitation
分类号:
S791.27
DOI:
10.3969/j.issn.1001-7461.2017.04.04
文献标志码:
A
摘要:
 为探究不同林龄杉木成熟叶与衰老叶之间的重吸收率及其C∶N∶P化学计量特征 ，以8、14、21、46年生杉木为研究对象，测定并计算其鲜叶、凋落叶和表层土壤的养分含量、重吸收率及其C∶N∶P化学计量比。结果表明：1）不同林龄间叶片C、N含量差异显著(P<0.05)，叶片、凋落叶P含量差异性均极显著(P＜0.01)，14年生杉木叶片N含量显著高于其他3个年龄的树木(P＜0.05)，呈单峰型；2）较高的C∶N、C∶P比是植物对养分较高利用率的体现，杉木鲜叶养分含量均与其重吸收率均呈负相关，N、P利用效率在一定范围随N、P含量的升高而降低；3）本区植物N、P重吸收率分别在33.89%～38.40%和37.49%～46.35%之间，P重吸收率>N，且不同林龄杉木成熟鲜叶N∶P＞16，表明该地区杉木的生长可能受到P元素限制。
Abstract:
 To explore nutrient resorption efficiency and C∶N∶P stoichiometry of Cunninghamia lanceolata plantations with different ages,8-,14-,21-,and 46-year-old C.lanceolata trees were used as research objectives.Nutrient contents in the fresh mature leaves,fallen leaves,and facial soil were measured.The rate of resorption and C∶N∶P stoichiometry were calculated.The results showed that 1) the contents of C,N and P in the trees was significantly higher than those in soil.The differences in the contents of C and N between the trees with different ages were significant (P<0.05),P contents in the fresh leaves and litter were very significantly different (P<0.01).The content of N in the leaves of 14-year-old trees was significantly higher than that in other three age groups (P<0.05).2) Leaf C∶N and C∶P were less than that of litter,higher C∶N and C∶P ratio was the embodiment of higher utilization efficiency of the trees.3) The N and P reabsorption rates of the plants in this area ranged from 33.89% to 38.40% and from 37.49% to 46.35,P resorption efficiency was greater than N.The ratio of N∶P in the fresh mature leaves in all age groups was greater than 16,indicating that P might be the main limiting factor for C.lanceolata growth.

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备注/Memo

备注/Memo:
 收稿日期：2016-12-23修回日期：2017-03-08
基金项目：福建省科技重大专项（2012NZ0001）；福建省林业科技项目（闽林科［2012］3号）；福建农林大学部级创新平台项目。
作者简介：邱岭军，男，硕士研究生，研究方向：森林理水与保土功能。E-mail:447446583@qq.com
*通信作者：何宗明，男，研究员，研究方向：森林培育、水土保持研究。E-mail:hezm2@126.com
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