[1]郝玉琢,周 磊,吴 慧,等.4种类型水曲柳人工林叶片-凋落物-土壤生态化学计量特征比较[J].南京林业大学学报(自然科学版),2019,43(04):101-108.[doi:10. 3969/ j. issn. 1000-2006. 201806021]
 HAO Yuzhuo,ZHOU Lei,WU Hui,et al.Comparison of ecological stoichiometric characteristics of leaf-litter-soil in four types of Fraxinus mandshurica plantations[J].Journal of Nanjing Forestry University(Natural Science Edition),2019,43(04):101-108.[doi:10. 3969/ j. issn. 1000-2006. 201806021]
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4种类型水曲柳人工林叶片-凋落物-土壤生态化学计量特征比较
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
43
期数:
2019年04期
页码:
101-108
栏目:
研究论文
出版日期:
2019-07-24

文章信息/Info

Title:
Comparison of ecological stoichiometric characteristics of leaf-litter-soil in four types of Fraxinus mandshurica plantations
文章编号:
1000-2006(2019)04-0101-08
作者:
郝玉琢周 磊吴 慧 王树力*
(东北林业大学林学院,黑龙江 哈尔滨 150040)
Author(s):
HAO Yuzhuo ZHOU Lei WU HuiWANG Shuli*
(College of Forestry,Northeast Forestry University,Harbin 150040,China)
关键词:
水曲柳人工林 叶片 凋落物 土壤 生态化学计量特征 养分利用效率
Keywords:
Fraxinus mandshurica plantation leaf litter soil ecological stoichiometric characteristics efficacy of nutrientuse
分类号:
S718.54
DOI:
10. 3969/ j. issn. 1000-2006. 201806021
文献标志码:
A
摘要:
【目的】利用生态过程中多重化学元素的平衡关系,揭示营养元素相互作用的变化规律,了解多重化学元素质量平衡及其对生态交互作用的影响。分析4种类型水曲柳人工林间树种叶片-凋落物-土壤以及同一水曲柳人工林不同组分间碳(C)、氮(N)、磷(P)的含量及其生态化学计量特征,为水曲柳人工林的混交树种选择、叶片-凋落物-土壤中的养分调节及水曲柳人工林的合理施肥提供理论参考。【方法】在东北林业大学森林培育实验站,以天然林带状皆伐后营造的29年生水曲柳纯林、长白落叶松水曲柳混交林、红皮云杉水曲柳混交林和红松水曲柳混交林为对象,野外样地调查取样,室内测定叶片、凋落物、土壤的有机C、N、P含量,分析比较了4种类型水曲柳人工林叶片-凋落物-土壤的C、N、P含量及其化学计量比[碳氮、碳磷、氮磷质量比,即m(C):m(N),m(C):m(P),m(N):m(P),分别表示为C/N、C/P、N/P]特征。【结果】水曲柳与长白落叶松叶片的N、P含量显著高于红皮云杉和红松叶片中的N、P含量; 水曲柳纯林凋落物的N、P含量显著高于3种混交林凋落物的N、P含量; 4种林型土壤C、N、P含量差异显著,C以长白落叶松水曲柳混交林土壤的为最高,N、P以水曲柳纯林土壤的为最高,C、N、P皆以红松水曲柳混交林土壤的为最低; 4种林型叶片到凋落物的C、N、P含量平均降低率分别为18.98%、32.12%与21.95%; 凋落物到土壤的C、N、P含量平均降低率分别为81.37%、50.73%与3.49%; 混交林叶片到土壤的C、N、P含量平均降低率分别为84.90%、66.55%与24.67%; 红皮云杉和红松叶片的C/N、C/P显著高于水曲柳、长白落叶松叶片,N/P皆以长白落叶松、红皮云杉和红松显著低于水曲柳; 凋落物C/N和C/P以红皮云杉水曲柳混交林和红松水曲柳混交林显著高于水曲柳纯林和落叶松水曲柳混交林,N/P以水曲柳纯林高于3种混交林; 土壤C/N和C/P皆以落叶松水曲柳混交林显著高于其他3种林型。C/N以凋落物最高,土壤最低; C/P和N/P以叶片最高,土壤最低。【结论】从提高养分利用效率,促进树木生长和保护土壤角度综合考虑,相对于红松与红皮云杉,水曲柳与长白落叶松具有更好的养分利用效率与生长速度,长白落叶松水曲柳混交林和水曲柳纯林林下土壤中的C、N、P含量也相对高于红皮云杉水曲柳混交林与红松水曲柳混交林。因此,对水曲柳人工林的混交树种应优先选择长白落叶松。基于水曲柳人工林叶片-凋落物-土壤的C、N、P含量及其生态化学计量在不同组分中的变化情况,应注意林下土壤N、P肥的补施。
Abstract:
【Objective】Using the balance relationship of multiple chemical elements in the ecological process,  we aimed to determine the similarities and differences of C, N, P content, and their ratios in the leaf-litter-soil system among different types of Fraxinus mandshurica plantations. In addition, we investigated possible relationships between different components of the same plantation type, and provided theoretical reference for mixed tree species selection, nutrient regulation, and fertilization methods to F. mandshurica plantations.【Method】We studied pure F. mandshurica plantation, Larix olgensis ×F. mandshurica mixed plantation, Picea koraiensis ×F. mandshurica mixed plantation, and Pinus koraiensis ×F. mandshurica mixed plantation that were planted 29 years ago on the natural forest strip clear cutting land in the Forest Cultivation Experiment Station of Northeast Forestry University; leaf-litter-soil samples were also taken back to the laboratory for analysis. Organic C, N, P content in the leaf-litter-soil system was measured. C, N and P content, as well as their ratios in the leaf-litter-soil system of the four types of F. mandshurica plantations were compared.【Result】N and P content in F. mandshuricab and L. olgensis leaves were significantly higher when compared with those of Picea koraiensis and Pinus koraiensis. N and P content in the litter of F. mandshurica plantation were significantly higher when compared with those in the litter of the three kinds of mixed plantations. C, N and P content in the soil differed significantly among the different plantation types. C content was the highest in L. olgensis ×F. mandshurica mixed plantation. N and P contents were the highest in pure Fraxinus mandshurica plantation. C, N and P content were the lowest in Pinus koraiensis ×F. mandshurica mixed plantation. The average decrease in the ratio of C, N and P content from leaf to litter, from litter to soil, and from leaf to soil in the four types of F. mandshurica plantations was 18.98%, 32.12% and 21.95%; 81.37%, 50.73% and 3.49%; and 84.90%, 66.55% and 24.67%, respectively. C/N and C/P ratios in F. mandshurica and L. olgensis leaves were significantly lower when compared with those in Picea koraiensis and Pinus koraiensis leaves; the N/P ratio in F. mandshurica leaves was significantly higher when compared with those in the three mixed plantations; C/N and C/P ratios in the litter of pure F. mandshurica plantation and F. mandshurica×L.olgensis mixed plantation were significantly lower when compared with those of Picea koraiensis×F. mandshurica and Pinus koraiensis ×F. mandshurica mixed plantations. The N/P ratio in the litter of pure F. mandshurica plantation was significantly higher when compared with those in the three mixed forests; C/N and C/P ratio in the soil of F. mandshurica ×L. olgensis mixed plantation was significantly higher when compared with those in the three mixed forests; The C/N ratio was the largest in the litter, but was the smallest in the soil in the four types of plantations. C/P and N/P ratios were the greatest in leaves, and the smallest in the soil among the four types of plantations.【Conclusion】This study aimed to examine ways to improve the efficacy of nutrient use, promote trees growth, and protect the soil. F. mandshurica and L. olgensis exhibited greater nutrient use efficiency and growth rate than that Picea koraiensis and Pinus koraiensis did; C, N and P content in the soil of pure F. mandshurica and L. olgensis ×F. mandshurica mixed plantations were higher than those in the soil of Picea koraiensis ×F. mandshurica mixed and Pinus koraiensis × F. mandshurica mixed plantation. Therefore, the most preferable mixed species should be L. olgensis. Based on C, N and P content, and their stoichiometric ratio in the leaf-litter-soil system of four types of F. mandshurica plantations, we propose that attention should be paid to soil N and P fertilizer application during F. mandshurica cultivation.

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备注/Memo

备注/Memo:
收稿日期:2018-06-19 修回日期:2019-04-02 基金项目:国家重点研发计划(2017YFD0601103); 黑龙江省省级财政林业科研专项(201522)。 第一作者:郝玉琢(yuzhuohao1991@163.com)。*通信作者:王树力(shuliwang@163.com),教授,ORCID(0000-0002-4952-0547)。
更新日期/Last Update: 2019-07-22