|本期目录/Table of Contents|

[1]周丽丽,李树斌,王万萍,等.福建漳江口4种红树植物叶片碳氮磷化学计量及养分重吸收特征[J].应用与环境生物学报,2020,26(03):674-680.[doi:10.19675/j.cnki.1006-687x.2019.07057]
 ZHOU Lili,LI Shubin,et al.Leaf C, N, P stoichiometry and nutrient resorption characteristics among four mangrove tree species in the Zhangjiangkou wetland, Fujian Province[J].Chinese Journal of Applied & Environmental Biology,2020,26(03):674-680.[doi:10.19675/j.cnki.1006-687x.2019.07057]
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福建漳江口4种红树植物叶片碳氮磷化学计量及养分重吸收特征
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年03期
页码:
674-680
栏目:
研究论文
出版日期:
2020-06-25

文章信息/Info

Title:
Leaf C, N, P stoichiometry and nutrient resorption characteristics among four mangrove tree species in the Zhangjiangkou wetland, Fujian Province
作者:
周丽丽李树斌王万萍闫新阳 陈震潘辉
1闽江学院海洋研究院 福州 350108 2人工林可持续经营福建省高校工程研究中心 福州 350002 3福建农林大学林学院 福州 350002 4国家林业和草原局杉木工程技术研究中心 福州 350002
Author(s):
ZHOU Lili1 2 LI Shubin3 4 WANG Wanping3 YAN Xinyang3 CHEN Zhen1 & PAN Hui1?
1 Institute of Oceanography, Minjiang University, Fuzhou 350108, China 2 Fujian Provincial Colleges and University Engineering Research Center of Plantation Sustainable Management, Fuzhou 350002, China 3 College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China 4 Chinese Fir Engineering Technology Research Center of the State Forestry and Grassland Administration, Fuzhou 350002, China
关键词:
红树植物C:N:P养分限制养分重吸收化学计量学
Keywords:
mangrove tree species C:N:P ratio nutrient limitation nutrient resorption stoichiometry
DOI:
10.19675/j.cnki.1006-687x.2019.07057
摘要:
以福建漳江口红树林的秋茄(Kandelia candel)、桐花树(Aegiceras corniculatum)、白骨壤(Avicennia marina)和木榄(Bruguiear gymnorrhiza)为研究对象,对其成熟叶和衰老叶的C、N、P含量、生态化学计量比及重吸收效率进行分析,探讨不同树种养分限制格局及养分高效利用策略,结果显示:(1)成熟叶C、N、P含量范围分别为483.57-568.87、8.53-26.15、0.74-1.56 g/kg,衰老叶为441.33-512.67、2.59-8.93、0.28-0.74 g/kg,表现为成熟叶>衰老叶;成熟叶的C:N、C:P、N:P变化范围为21.11-69.39、310.96-735.87、11.11-34.86,衰老叶为49.51-207.42、563.03-1 878.98、7.20-11.38,成熟叶C:N、C:P小于衰老叶(白骨壤的C:P除外),而成熟叶N:P大于衰老叶,4种红树植物C、N、P含量和化学计量比差异均达显著水平(P < 0.05);成熟叶片C:N:P比范围为311:12:1-736:35:1,衰老叶为563:11:1-1 879:9:1;(2)N重吸收效率(NRE)范围为47.97%-84.64%,表现为木榄>秋茄>白骨壤>桐花树;P重吸收效率(PRE)范围为18.39%-76.81%,表现 为木榄>秋茄>桐花树>白骨壤;4种红树植物N重吸收效率均大于P;(3)相关分析表明,NRE与成熟叶的C:N和C:P显著负相关(P < 0.05),PRE与成熟叶P含量极显著正相关(P < 0.01)、与成熟叶C: P极显著负相关(P < 0.01). 成熟叶片N:P阈值(14)指示秋茄、桐花树和木榄生长受N限制,白骨壤生长受P限制,受N限制的秋茄、桐花树和木榄具有较高的NRE,而受P限制的白骨壤并不具有较高PRE. 综上可知,高效的NRE是红树植物适应低N环境的重要养分利用策略,而红树植物可能采取其他适应机制来响应低P胁迫. (表5 参38)
Abstract:
To understand the nutrient limitation pattern and efficient nutrient utilization strategy of mangrove species, we analyzed C, N and P concentrations, stoichiometric ratios (C:N:P), and nutrient resorption efficiency of mature and senescent leaves of Kandelia candel, Aegiceras corniculatum, Avicennia marina, and Bruguiear gymnorrhiza in Zhangjiang Estuary, Fujian Province, Eastern China. Results showed that (1) C, N, and P concentrations were 483.57-568.87 g/kg, 8.53-26.15 g/kg, and 0.74-1.56 g/kg in mature leaves and 441.33-512.67 g/kg, 2.59-8.93 g/kg and 0.28-0.74 g/kg, respectively, in senescent leaves, with lower concentrations in senescent leaves. C:N, C:P, and N:P ratios were 21.11-69.39, 310.96-735.87, and 11.11-34.86 in mature leaves and 49.51-207.42, 563.03-1 878.98, and 7.20-11.38 in senescent leaves, respectively. Senescent leaves exhibited higher C:N and C:P ratios (except for the C:P ratio of A. marina) than mature leaves, whereas the opposite trend was observed for N:P ratio. The concentrations and stoichiometric ratios of C, N, and P in the four mangrove species were significantly different (P < 0.05). C:N:P ratios were 311:12:1-736:35:1 and 563:11:1-1879:9:1 in mature and senescent leaves, respectively. (2) N resorption efficiency (NRE) was 47.97%-84.64% (in the order Bruguiear gymnorrhiza > Kandelia candel > Avicennia marina > Aegiceras corniculatum) and the P resorption efficiency (PRE) was 18.39%-76.81% (in the order Bruguiear gymnorrhiza > Kandelia candel > Aegiceras corniculatum > Avicennia marina). NRE was higher than PRE for the four mangrove species. (3) Correlation analysis indicated that NRE was significantly negatively correlated with C:N and C:P in mature leaves (P < 0.05) and that PRE was significantly positively correlated with P and significantly negatively correlated with C:P in mature leaves (P < 0.01). The threshold value of the foliar N:P ratio (14) indicated that Kandelia candel, Aegiceras corniculatum, and Bruguiear gymnorrhiza were N limited and Avicennia marina was P limited; however, the nutrient resorption efficiency did not correspond to high N and P resorption efficiencies in the species. We conclude that the nutrient utilization strategy of these mangrove species included adopting relatively higher NRE to adapt to the N-deficient environment; however, mangrove species appeared to develop new adaptation mechanisms to respond to P-deficiency stress.

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更新日期/Last Update: 2020-06-25