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[1]邱岭军,何宗明,胡欢甜,等.滨海沙地不同树种碳氮磷化学计量特征[J].应用与环境生物学报,2017,23(03):555-559.[doi:2016.08017]
 QIU Lingjun,HE Zongming,HU Huantian,et al.Stoichiometric characteristics of carbon, nitrogen, and phosphorus in different tree species in a sandy coastal plain area[J].Chinese Journal of Applied & Environmental Biology,2017,23(03):555-559.[doi:2016.08017]
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滨海沙地不同树种碳氮磷化学计量特征()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
23卷
期数:
2017年03期
页码:
555-559
栏目:
研究论文
出版日期:
2017-06-25

文章信息/Info

Title:
Stoichiometric characteristics of carbon, nitrogen, and phosphorus in different tree species in a sandy coastal plain area
作者:
邱岭军何宗明胡欢甜林宝平 林 宇汪凤林林思祖
1福建农林大学林学院 福州 350002 2国家林业局杉木工程技术研究中心 福州 350002 3福建省长乐大鹤国有防护林场 长乐 350212
Author(s):
QIU Lingjun HE Zongming HU Huantian LIN Baoping LIN Yu WANG Fenglin & LIN Sizhu
1Forestry College of Fujian Agriculture and Forestry University, Fuzhou 350002, China 2State Forestry Administration Engineering Research Center of Chinese Fir, Fuzhou 350002, China 3Changle Dahe State-Owned Protection Forest Farm of Fujian Province, Changle 350212, China
关键词:
滨海沙地养分限制化学计量学C:N:P沿海防护林
Keywords:
sandy coastal plain area nutrient limitation stoichiometry C:N:P coastal protection forest
分类号:
S718.554.2
DOI:
2016.08017
摘要:
以滨海沙地尾巨桉、肯氏相思、纹荚相思、湿地松、木麻黄为研究对象,分别测定其新鲜叶片、凋落叶及0-10 cm土壤层样品的养分含量,分析不同人工林碳氮磷化学计量比(C:N:P),探讨化学计量垂直分异特征. 结果表明:C、N、P含量变化范围分别为叶片503.19-515.80、11.76-22.1、0.37-0.66 mg/g,凋落物474.81-497.28、7.18-15.54、0.34-0.55 mg/g,土壤3.41-4.41、0.33-0.47、0.09-0.12 mg/g;植物C、N、P含量显著高于土壤,不同物种间叶片N、P含量差异显著,凋落物C、N、P含量差异性显著. 凋落叶C:N、C:P大于叶片但N:P小于叶片. 植物N重吸收率大于P重吸收率(分别为29.54%、18.51%),且植物叶片N:P > 16. 本研究结果表明5个树种较大程度受到P元素限制,有助于更深入地认识滨海沙地养分循环规律和系统稳定机制. (图2 表2 参28)
Abstract:
The nutrient contents of fresh leaves, litter, and surface soil (0–10 cm) were determined in Eucalyptus urophylla × E. grandis, Acacia cunninghamii, A. aulacocarpa, Pinus elliottii, and Casuarina equisetifolia as the research objects, and the effects of the carbon, nitrogen and phosphorus stoichiometry (C:N:P) in different plantations were studied to explore the stoichiometric vertical differentiation characteristics. The results showed that the concentrations of C, N, and P were 503.19 to 515.80, 11.76 to 22.1, and 0.37 to 0.66 mg/g (leaves); 474.81 to 497.28, 7.18 to 15.54, and 0.34 to 0.55 mg/g (litter); 3.41 to 4.41, 0.33 to 0.47, and 0.09 to 0.12 mg/g (soil), respectively. The C, N, and P contents of plants were significantly higher than those of soil. The concentrations of N and P in leaves of different species were significantly different. The concentrations of C, N, and P in litter were significantly different. The C:N and C:P ratios in litter were higher than those in leaves, but the N:P ratio was lower than that in leaves. The N resorption efficiency of plants (29.54%) was greater than the P resorption efficiency (18.51%), and the leaf N:P ratio was greater than 16; these data showed that the tree species were mainly restricted by P. These results will contribute to a deeper understanding of the nutrient cycling law and the system stability mechanism of coastal sand.

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更新日期/Last Update: 2017-06-25