[1]向云西,陈胜魁,潘萍,等.马尾松叶片-凋落物-土壤的碳氮磷化学计量特征[J].森林与环境学报,2019,39(02):120-126.[doi:10.13324/j.cnki.jfcf.2019.02.002]
 XIANG Yunxi,CHEN Shengkui,PAN Ping,et al.Stoichiometric traits of C, N and P of leaf-litter-soil system of Pinus massoniana forest[J].,2019,39(02):120-126.[doi:10.13324/j.cnki.jfcf.2019.02.002]
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马尾松叶片-凋落物-土壤的碳氮磷化学计量特征()
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《森林与环境学报》[ISSN:2096-0018/CN:35-1327/S]

卷:
39卷
期数:
2019年02期
页码:
120-126
栏目:
出版日期:
2019-03-06

文章信息/Info

Title:
Stoichiometric traits of C, N and P of leaf-litter-soil system of Pinus massoniana forest
作者:
向云西1 陈胜魁2 潘萍1 欧阳勋志1 宁金魁1 李琦1
1. 江西农业大学林学院, 江西 南昌 330045;
2. 赣州市林业科学研究所, 江西 赣州 341000
Author(s):
XIANG Yunxi1 CHEN Shengkui2 PAN Ping1 OUYANG Xunzhi1 NING Jinkui1 LI Qi1
1. College of Forestry, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China;
2. Ganzhou Institute of Forestry Science, Ganzhou, Jiangxi 341000, China
关键词:
马尾松叶片凋落物土壤化学计量
Keywords:
Pinus massoniana Lamb.leaflittersoilstoichiometry
分类号:
S791.38
DOI:
10.13324/j.cnki.jfcf.2019.02.002
摘要:
以赣南马尾松天然林为研究对象,采用空间代替时间的方法,通过典型样地调查和样品测定,分析不同林龄马尾松林叶片、凋落物和土壤的C、N、P含量及化学计量特征。结果表明:(1)各龄组的C、N、P含量均表现为土壤<凋落物<叶片,且三者之间均呈现显著性差异(P<0.05),叶片C、N、P含量均在近熟林达最大值;土壤C含量为成熟林最大,而N、P含量则近熟林最大;凋落物的C含量则成熟林最小,N、P含量为近熟林最小。(2)不同龄组之间,C含量在叶片、凋落物、土壤中均有显著差异(P<0.05),N、P含量及C∶N、N∶P在土壤中有显著差异(P<0.05),C∶N和C∶P在凋落物中有显著差异(P<0.05)。(3) C、N、P含量及其化学计量比在叶片、凋落物、土壤各自的相关性优于两两之间,而两两间的相关性主要体现在叶片P与凋落物N、叶片P与土壤P、叶片N∶P与凋落物N∶P。土壤有机质的矿化作用偏慢,林木的生长、凋落物分解均受到N元素的限制,P元素的有效性偏低;叶片、凋落物、土壤的主要化学计量指标之间具有明显的耦合性,P元素相比C、N元素在叶片、凋落物、土壤三者之间的相关性更为明显。
Abstract:
Using datum of typical plots survey and space instead time method, investigated natural Pinus massoniana forest to analyze the content of C, N, P and stoichiometric characteristics of leaf, litter and soil in different age forest. The results showed that:(1)the content of C, N and P in each age group were all shown as soilP<0.05), the content of C, N and P in leaf were the maximum in the near-mature forest; the content of C in soil was the maximum in mature forest, while the content of N and P were the maximum in near-mature forest; the content of C in litter was the minimum in mature forest, while the content of N and P were the minimum in near-mature forest. (2)Among different age groups, there were significant difference in C content of leaf, litter and soil (P<0.05), significant difference in N, P and C:N and N:P of soil (P<0.05), and significant difference in C:N and C:P of litter (P<0.05). (3)The correlation the content of C, N, P and their stoichiometric ratios in leaf, litter, soil respectively were better than that between them, the correlation between them were mainly reflected leaf P and litter N, leaf P and soil P, leaf N:P and litter N:P. The mineralization of soil organic matter was slow, the growth of trees and the decomposition of litter were all restricted by N element, and the availability of P element was low. The main stoichiometric indexes in leaf, litter and soil have obvious coupling, the correlation of P element in leaf, litter and soil is more obvious than that the C and N element.

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备注/Memo

备注/Memo:
收稿日期:2018-07-05;改回日期:2018-10-23。
基金项目:国家自然科学基金项目(31760207,31360181);江西省林业科技创新专项资金项目(201607);中国科学院战略性先导科技专题项目(XDA05050205)。
作者简介:向云西(1992-),女,硕士研究生,从事森林资源管理与监测研究。Email:289164472@qq.com。
通讯作者:欧阳勋志(1966-),男,教授,博士,博士生导师,从事森林资源管理与监测和森林生态研究。Email:oyxz_2003@hotmail.com。
更新日期/Last Update: 1900-01-01