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[1]邱岭军,胡欢甜,林宇,等.滨海沙地不同林龄尾巨桉内吸收率及其C:N:P化学计量特征[J].应用与环境生物学报,2017,23(04):739-744.[doi:10.3724/SP.J.1145.2016.11028]
 QIU Lingjun,HU Huantian,et al.Water environment revealed by aquatic communities of lakes: a case study on Dongping Lake[J].Chinese Journal of Applied & Environmental Biology,2017,23(04):739-744.[doi:10.3724/SP.J.1145.2016.11028]
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滨海沙地不同林龄尾巨桉内吸收率及其C:N:P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04期
页码:
739-744
栏目:
研究简报
出版日期:
2017-08-25

文章信息/Info

Title:
Water environment revealed by aquatic communities of lakes: a case study on Dongping Lake
作者:
邱岭军胡欢甜林宇葛露露王柯远何宗明董强
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 Lingjun1 2 HU Huantian1 2 LIN Yu3 GE Lulu1 2 WANG Keyuan1 2 HE Zongming1 2 & DONG Qiang1 2**
1Forestry College of Fujian Agriculture and Forestry University, Fuzhou 350002, China 2Chinese Fir Engineering Technology Research Center, State Forestry Administration, Fuzhou 350002, China 3Changle Dahe State-Owned Protection Forest Farm of Fujian Province, Changle 350212, China
关键词:
滨海沙地养分内吸收养分限制C:N:P沿海防护林尾巨桉林龄
Keywords:
sandy coastal plain area resorption efficiency nutrient limitation C:N:P coastal protection forest Eucalyptus urophylla × E. grandis forest age
分类号:
S718.554.2 : S792.390.2
DOI:
10.3724/SP.J.1145.2016.11028
摘要:
以4年生、8年生、13年生尾巨桉林为研究对象,测定并计算其鲜叶、凋落叶和表层土壤的养分含量、内吸收率及碳氮磷化学计量比(C:N:P). 结果显示:叶片C、N、P含量变化范围分别为486.0-508.56、13.31-15.46、0.60-0.84 mg/g,凋落物为462.55-499.9、8.20-11.51、0.29-0.51 mg/g,土壤为1.87-2.78、0.17-0.33、0.12-0.18 mg/g;植物C、N、P含量显著高于土壤,不同林龄间叶片C、N含量差异显著(P < 0.05),叶片、凋落叶P含量差异均极显著(P < 0.01);尾巨桉N、P内吸收率分别为31.37%、42%,P内吸收率大于N内吸收率;叶片重吸收效率表现出了随林龄增大而呈下降的趋势,且不同林龄尾巨桉N:P > 16. 研究结果表明该地区尾巨桉的生长限制因子为P元素,有助于为滨海沙地人工纯林植物群落制定合理的营林规划、施肥评估标准提供依据. (图1 表3 参33)
Abstract:
Four-, eight-, and thirteen-year-old Eucalyptus urophylla × E. grandis plantations were chosen as the study objects, and the nutrient contents of fresh leaves, litter, and surface soil, resorption efficiency, and C:N:P stoichiometric ratio were measured. The results showed that the contents of C, N, and P were 486.0-508.56, 13.31-15.46, and 0.60-0.84 mg/g in leaves, 462.55-499.9 mg/g, 8.20-11.51 mg/g, and 0.29-0.51 mg/g in litter, and 1.87 to 2.78 mg/g, 0.17 to 0.33 mg/g, and 0.12 to 0.18 mg/g in soil, respectively. The contents of C, N, and P in plants were significantly higher than those in the soil. The differences in C and N contents in leaves were significant between different ages (P < 0.05), and P contents in leaves and litter were also very significant (P < 0.01). The N and P resorption efficiencies were 31.37% and 42%, respectively, showing that P resorption efficiency was greater than that of N. The leaf resorption efficiency showed a decreasing trend with age, and the N:P ratio was >16. These results showed that the E. urophylla × E. grandis plantation is largely restricted by P element in this region, providing reasonable basis for planning and fertilization evaluation of artificial plant communities in sandy coastal plain areas.

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[2]葛露露,孟庆权,林宇,等.滨海沙地不同树种人工林的碳储量及其分配格局[J].应用与环境生物学报,2018,24(04):723.[doi:10.19675/j.cnki.1006-687x.2017.10016]
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更新日期/Last Update: 2017-08-25