基于叶片性状变化下云杉幼苗更新的C,N,P调控机制
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摘要
为探测云杉幼苗更新的潜在生态学机制,研究了云杉幼苗随更新年龄变化下的叶片形态特征、叶片及根系C,N,P含量特征及其与叶片形态特征的相关性。结果表明,云杉幼苗叶片形态指标随更新过程中龄级的增加而变化。其中,叶长、叶宽、叶周长、叶面积均随着龄级的增加而增加,叶长宽比和比叶面积随着龄级的增加而减小。云杉幼苗叶片有机碳与全磷含量随年龄的增大而增加,全氮则在减少;根系中C,N,P随更新年龄增加均呈增加趋势。叶片和根系C,N,P含量随更新年龄的增加而变化且各含量间相互关联。云杉幼苗更新过程中,叶片有机碳和全磷可促进叶长、叶宽、叶面积及叶周长的增加,同时抑制叶长宽比和比叶面积的增加;全氮对幼苗更新过程中叶片形态特征的影响与有机碳、全磷相反。根系中C,N含量及C,N,P间的关联变化对叶片C,N含量及C,N,P间的相互作用存在显著影响;叶片C,N,P含量受根系C,N,P含量的影响,并通过影响叶片形态特征从而对云杉幼苗的更新过程起调控作用。
To explore the potential ecological mechanism of Picea aspoerata seedling regeneration, the leaf morphological characteristics, leaf and root C, N, P content characteristics and the correlation among them were studied. The results showed that the leaf morphological indexes of Picea aspoerata seedlings changed with the increase of age-class during regeneration. Among them, leaf length,leaf width, leaf circumference and leaf area increased with the increase of age-class, while leaf length-width ratio and specific leaf area decreased with increase of age-class. The contents of organic carbon and total phosphorus in Picea aspoerata seedlings increased with increase of age, while total nitrogen decreased. C, N, P content in roots increased with increase of age. The C, N and P content of leaves and roots changed and related to each other with increase of age. In the process of Picea aspoerata seedling regeneration, organic carbon and total phosphorus could promote the increase of leaf length, leaf width, leaf area and leaf circumference, and inhibit the increase of leaf length-width ratio and specific leaf area, the effect of total nitrogen on leaf morphological characteristics during seedling regeneration was contrary to that of organic carbon and total phosphorus. The content of C, N and the correlation between C, N and P in root had significant influence on the content of C, N and the interaction between C, N and P in leaves. Leaf C, N, P content was affected by root C, N, P content, and regulated the regeneration process of Picea aspoerata seedlings by affecting leaf morphological characteristics.
To explore the potential ecological mechanism of Picea aspoerata seedling regeneration, the leaf morphological characteristics, leaf and root C, N, P content characteristics and the correlation among them were studied. The results showed that the leaf morphological indexes of Picea aspoerata seedlings changed with the increase of age-class during regeneration. Among them, leaf length,leaf width, leaf circumference and leaf area increased with the increase of age-class, while leaf length-width ratio and specific leaf area decreased with increase of age-class. The contents of organic carbon and total phosphorus in Picea aspoerata seedlings increased with increase of age, while total nitrogen decreased. C, N, P content in roots increased with increase of age. The C, N and P content of leaves and roots changed and related to each other with increase of age. In the process of Picea aspoerata seedling regeneration, organic carbon and total phosphorus could promote the increase of leaf length, leaf width, leaf area and leaf circumference, and inhibit the increase of leaf length-width ratio and specific leaf area, the effect of total nitrogen on leaf morphological characteristics during seedling regeneration was contrary to that of organic carbon and total phosphorus. The content of C, N and the correlation between C, N and P in root had significant influence on the content of C, N and the interaction between C, N and P in leaves. Leaf C, N, P content was affected by root C, N, P content, and regulated the regeneration process of Picea aspoerata seedlings by affecting leaf morphological characteristics.
引文
[1]马姜明,李昆,张昌顺.元谋干热河谷苏门答腊金合欢、新银合欢人工林天然更新初步研究[J].应用生态学报,2006,17(8):1365-1369.
[2]于飞,王得祥,史晓晓,等.不同生态条件下松栎混交林3种优势乔木种群的更新规律[J].西北植物学报,2013,33(5):1020-1026.
[3]SARDANS J,RIVAS-UBACH A,PE譙UELAS J.The elemental stoichiometry of aquatic and terrestrial ecosystems and its relationships with organismic lifestyle and ecosystem structure and function:A review and perspectives[J].Biogeochemistry,2012,111(1/3):1-39.
[4]马永跃,仝川,王维奇,等.浮萍对福州平原稻田CH4和N2O排放的影响分析[J].中国生态农业学报,2012,20(6):723-727.
[5]荣戗戗,刘京涛,夏江宝,等.莱州湾湿地柽柳叶片N、P生态化学计量学特征[J].生态学杂志,2012,31(12):3032-3037.
[6]赵维俊,刘贤德,金铭,等.祁连山青海云杉林叶片-枯落物-土壤的碳氮磷生态化学计量特征[J].土壤学报,2016,53(2):477-489.
[7]李芳菲.刺槐人工林C、N、P分配格局及其化学计量特征研究[D].杨凌:西北农林科技大学,2015.
[8]鲍士旦.土壤农化分析[M].3版.北京:中国农业出版社,2000:30-34,265-270.
[9]田纪春,王学臣,刘广田.植物的光合作用与光合氮、碳代谢的耦联及调节[J].生命科学,2001(4):145-147.
[10]WRIGHT I J,ACKERLY D D,BONGERS F,et al.Relationships among ecologically important dimensions of plant trait variation in seven neotropical forests[J].Annals of Botany,2007,99(5):1003-1015.
[11]胥超,林开淼,刘小飞,等.不同林龄米槠更新林叶和枝碳氮磷含量及其化学计量特征[J].亚热带资源与环境学报,2016,11(2):32-38.
[12]姜沛沛,曹扬,陈云明,等.不同林龄油松(Pinus tabulaeformis)人工林植物、凋落物与土壤C,N,P化学计量特征[J].生态学报,2016,36(19):6188-6197.
[13]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(4):739-744.
[14]MCCARTHY M C,ENQUIST B J.Consistency between an allometric approach and optimal partitioning theory in global patterns of plant biomass allocation[J].Functional Ecology,2010,21(4):713-720.
[15]WRIGHT I J,REICH P B,CORNELISSEN J H C,et al.Modulation of leaf economic traits and trait relationships by climate[J].Global Ecology&Biogeography,2005,14(5):411-421.
[16]许卓婧,韩有志,王旭刚,等.云杉幼苗叶片N,P计量学特征的时空变异[J].山西农业科学,2017,45(4):547-551.
[17]郭卫红,王华,虞木奎,等.沿海地区水杉叶片性状的纬度变化机制[J].应用生态学报,2017,28(3):772-778.
[18]WRIGHT I J,REICH P B,WESTOBY M,et al.The worldwide leaf economics spectrum[J].Nature,2004,428:821.
[19]李明军,喻理飞,杜明凤,等.不同林龄杉木人工林植物-凋落叶-土壤C,N,P化学计量特征及互作关系[J].生态学报,2018,38(21):7772-7781.
[2]于飞,王得祥,史晓晓,等.不同生态条件下松栎混交林3种优势乔木种群的更新规律[J].西北植物学报,2013,33(5):1020-1026.
[3]SARDANS J,RIVAS-UBACH A,PE譙UELAS J.The elemental stoichiometry of aquatic and terrestrial ecosystems and its relationships with organismic lifestyle and ecosystem structure and function:A review and perspectives[J].Biogeochemistry,2012,111(1/3):1-39.
[4]马永跃,仝川,王维奇,等.浮萍对福州平原稻田CH4和N2O排放的影响分析[J].中国生态农业学报,2012,20(6):723-727.
[5]荣戗戗,刘京涛,夏江宝,等.莱州湾湿地柽柳叶片N、P生态化学计量学特征[J].生态学杂志,2012,31(12):3032-3037.
[6]赵维俊,刘贤德,金铭,等.祁连山青海云杉林叶片-枯落物-土壤的碳氮磷生态化学计量特征[J].土壤学报,2016,53(2):477-489.
[7]李芳菲.刺槐人工林C、N、P分配格局及其化学计量特征研究[D].杨凌:西北农林科技大学,2015.
[8]鲍士旦.土壤农化分析[M].3版.北京:中国农业出版社,2000:30-34,265-270.
[9]田纪春,王学臣,刘广田.植物的光合作用与光合氮、碳代谢的耦联及调节[J].生命科学,2001(4):145-147.
[10]WRIGHT I J,ACKERLY D D,BONGERS F,et al.Relationships among ecologically important dimensions of plant trait variation in seven neotropical forests[J].Annals of Botany,2007,99(5):1003-1015.
[11]胥超,林开淼,刘小飞,等.不同林龄米槠更新林叶和枝碳氮磷含量及其化学计量特征[J].亚热带资源与环境学报,2016,11(2):32-38.
[12]姜沛沛,曹扬,陈云明,等.不同林龄油松(Pinus tabulaeformis)人工林植物、凋落物与土壤C,N,P化学计量特征[J].生态学报,2016,36(19):6188-6197.
[13]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(4):739-744.
[14]MCCARTHY M C,ENQUIST B J.Consistency between an allometric approach and optimal partitioning theory in global patterns of plant biomass allocation[J].Functional Ecology,2010,21(4):713-720.
[15]WRIGHT I J,REICH P B,CORNELISSEN J H C,et al.Modulation of leaf economic traits and trait relationships by climate[J].Global Ecology&Biogeography,2005,14(5):411-421.
[16]许卓婧,韩有志,王旭刚,等.云杉幼苗叶片N,P计量学特征的时空变异[J].山西农业科学,2017,45(4):547-551.
[17]郭卫红,王华,虞木奎,等.沿海地区水杉叶片性状的纬度变化机制[J].应用生态学报,2017,28(3):772-778.
[18]WRIGHT I J,REICH P B,WESTOBY M,et al.The worldwide leaf economics spectrum[J].Nature,2004,428:821.
[19]李明军,喻理飞,杜明凤,等.不同林龄杉木人工林植物-凋落叶-土壤C,N,P化学计量特征及互作关系[J].生态学报,2018,38(21):7772-7781.