[1]马锐豪,樊伟,王斐,等.不同林分类型叶片稳定碳、氮同位素的变化特征[J].江苏农业学报,2022,38(01):102-110.[doi:doi:10.3969/j.issn.1000-4440.2022.01.012]
　MA Rui-hao,FAN Wei,WANG Fei,et al.Variation characteristics of stable carbon and stable nitrogen isotopes in leaves of different forest types[J].,2022,38(01):102-110.[doi:doi:10.3969/j.issn.1000-4440.2022.01.012]
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不同林分类型叶片稳定碳、氮同位素的变化特征()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
38
期数:
2022年01期
页码:
102-110
栏目:
耕作栽培·资源环境
出版日期:
2022-02-28

文章信息/Info

Title:
Variation characteristics of stable carbon and stable nitrogen isotopes in leaves of different forest types
作者:
马锐豪; 樊伟; 王斐; 夏开; 温正宇; 徐小牛
(安徽农业大学林学与园林学院，安徽合肥230036)
Author(s):
MA Rui-hao; FAN Wei; WANG Fei; XIA Kai; WEN Zheng-yu; XU Xiao-niu
(School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China)
关键词:
稳定碳、氮同位素; 林型; 叶龄; 营养元素
Keywords:
stable carbon and stable nitrogen isotopes; forest type; foliar age; nutrient element
分类号:
S718.3
DOI:
doi:10.3969/j.issn.1000-4440.2022.01.012
文献标志码:
A
摘要:
为了解各种生物及非生物因素对植物叶片稳定碳、氮同位素含量的影响，研究了蔡家桥林场内马尾松次生林（PM-SF）、湿地松人工林（PE-P）及杉木人工林（CL-P），不同叶龄叶片的养分（C、N、P、K、Ca、Mg）含量及其化学计量比与稳定碳同位素（δ13C）、稳定氮同位素（δ15N）含量的关系，探讨植物叶片δ13C、δ15N含量变异特征。结果表明，各林型叶片δ13C含量随叶龄变化不显著，叶片δ15N含量随叶龄的增大而减小。总体上，马尾松次生林叶片δ13C、δ15N含量均高于湿地松人工林及杉木人工林。多元回归分析结果表明，叶片养分含量、叶龄和林型的共同影响分别解释叶片δ13C、δ15N含量变化的83.94%和83.00%。相关性分析结果表明，叶片δ13C含量与N含量呈显著正相关关系，与C含量/N含量呈显著负相关关系；δ15N含量与N、P、K含量呈显著正相关关系，与Ca含量、C含量/N含量呈显著负相关关系。总体来看，植物叶片对碳、氮同位素的分馏受林分类型、叶龄、营分元素含量等多种因素的影响，不同林型条件下，环境和养分因子的变化在一定程度上反映并影响了植物叶片δ13C、δ15N含量的变化特征。
Abstract:
In order to understand the effects of various biotic and abiotic factors on contents of stable carbon isotope and stable nitrogen isotope in plant leaves, the relationship between nutrients (C, N, P, K, Ca, Mg) contents and their stoichiometric ratios and the contents of stable carbon isotope (δ13C) and stable nitrogen isotope (δ15N) in leaves at different foliar ages of Pinus massoniana secondary forest (PM-SF), Pinus elliottii artificial forest (PE-P) and Cunninghamia lanceolata artificial forest (CL-P) in Caijiaqiao Forest Farm were analyzed, and the variation characteristics of δ13C and δ15N contents in plant leaves were discussed. The results showed that, with the change of foliar ages, the change of foliar δ13C contents of different forest types was not significant, but the foliar δ15N content of different forest types decreased with the increase of foliar age. The foliar δ13C and δ15N contents of Pinus massoniana secondary forest were higher than those of the two artificial forests on the whole. Multiple regression analysis suggested that, the combined effects of foliar nutrient contents, foliar age and forest type could explain 83.94% and 83.00% of the foliar δ13C and δ15N contents, respectively. Results of the correlation analysis showed that, the foliar δ13C content was in significant positive correlation with N content, and was in significant negative correlation with the ratio of C content and N content; the foliar δ15N content was in significant positive correlation with N content, P content and K content, and was in significant negative correlation with Ca content, C content and the ratio of C content and N content. In conclusion, the fractionation of carbon and nitrogen isotopes in plant leaves is affected by multiple factors including forest type, foliar age and contents of nutrient elements, and the variation of environmental and nutrient factors can reflect and affect the change properties of foliar δ13C and δ15N contents to some extent under different forest types.

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备注/Memo

备注/Memo:
收稿日期：2021-03-24基金项目：国家“十三五”重点研发计划项目（2016YFD0600304-03）；国家自然科学基金项目（31770672、31370626）作者简介：马锐豪（1997-），男，河南许昌人，硕士研究生，主要研究方向为森林培育学。(E-mail)marh0407@163.com通讯作者：徐小牛，(E-mail)xnxu2007@ahau.edu.cn
更新日期/Last Update: 2022-03-04