Leaf Litter Decomposition and Its Relationship with Soil Properties in Betula alnoides and Eucalyptus urophylla &#215; E. grandis

HAO Jian; MO Hui-hua; HUANG Bi-chang; ZHOU Yan-ping; CAI Dao-xiong

Volume 29 Issue 2

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Leaf Litter Decomposition and Its Relationship with Soil Properties in Betula alnoides and Eucalyptus urophylla × E. grandis

1.
Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, Guangxi, China
2.
Guangxi Youyiguan Forest Ecosystem Research Station, Pingxiang 532699, Guangxi, China
3.
Linduo Forest Farm of Tian'e County, Tian'e 547300, Guangxi, China

Received Date: 2015-06-09

Abstract

[Objective]To study the decomposition dynamics of leaf litter and its relationship with soil chemical properties in two young plantation stands (monocultures of Betula alnoides and Eucalyptus urophylla × E. grandis) in subtropical China. [Method]The decomposition processes of leaf litter were measured using mesh nylon bag method. [Result]The decomposition coefficients of leaf litter of B. alnoides and E. urophylla × E. grandis were 0.96 a-1 and 0.88 a-1, respectively. During the 12-month decomposition, the organic carbon contents declined gradually in the two leaf litter. The total K and C/N ratio rapidly decrease at the early stage, and tended towards stability thereafter. The total N and total P in the two leaf litter increased gradually, whereas the N/P ratio increased at first and then decreased throughout the entire decomposition. In both early and late phase of decomposition, the dry mass loss of the leaf litter was correlated positively with the N contents (R=0.877 and 0.855, respectively), and a negative relation was observed with C/N ratio (R=-0.735 and-0.697, respectively). Compared with the E. urophylla × E. grandis stand, the B. alnoides had significantly higher contents of soil organic carbon (SOC), total N, total P, total K as well as higher N/P ratio in 0-10 and 10-20 cm soil depth. However, the litter decomposition had no significant effects on SOC, total K, pH, C/N ratio and N/P ratio in 20-30 cm soil depth. The correlation analysis revealed that the organic C of leaf litter was significantly related to SOC, total N, total P, total K and N/P ratio, whereas the total N of leaf litter was significantly related to soil total N, pH and C/N ratio. [Conclusion]The nutrient contents of leaf litter were found to be significantly correlated with the soil nutrient condition. Compared with the E. urophylla × E. grandis, the nutrient contents of leaf litter were significantly higher in B. alnoides, and subsequently, faster decomposition rate of leaf litter resulted in higher soil nutrient contents.
- Betula alnoides,
- Eucalyptus urophylla × E.grandis,
- leaf litter,
- decomposition rate,
- nutrient content,
- chemical properties,
- subtropical China

References

[1]	Berg B.Litter decomposition and organic matter turnover in northern forest soils[J].Forest Ecology and Management,2000,133(1):13-22.
[2]	Wang G G,Klinka K.White spruce foliar nutrient concentrations in relation to tree growth and soil nutrient amounts[J].Forest Ecology and Management,1997,98(1):89-99.
[3]	葛晓改,肖文发,曾立雄,等.不同林龄马尾松凋落物基质质量与土壤养分的关系[J].生态学报,2012,32(3):852-862.
[4]	Wang H,Liu S,Wang J,et al.Effects of tree species mixture on soil organic carbon stocks and greenhouse gas fluxes in subtropical plantations in China[J].Forest Ecology and Management,2013,300:4-13.
[5]	梁瑞龙.广西乡土阔叶树种资源现状及其发展对策[J].广西林业科学,2007,36(1):5-9.
[6]	周燕萍,庞正轰,黄弼昌,等.林朵林场西南桦造林试验[J].广西科学,2012,19(2):192-195.
[7]	Mo J,Brown S,Xue J,et al.Response of litter decomposition to simulated N deposition in disturbed,rehabilitated and mature forests in subtropical China[J].Plant and Soil,2006,282(1-2):135-151.
[8]	Ostertag R,Marín-Spiotta E,Silver W L,et al.Litterfall and decomposition in relation to soil carbon pools along a secondary forest chronosequence in Puerto Rico[J].Ecosystems,2008,11(5):701-714.
[9]	鲍士旦.土壤农化分析[M].南京:中国农业出版社,2000.
[10]	Olson J S.Energy storage and the balance of producers and decomposers in ecological systems[J].Ecology,1963,44(2):322-331.
[11]	宋新章,江洪,马元丹,等.中国东部气候带凋落物分解特征--气候和基质质量的综合影响[J].生态学报,2009,29(10):5219-5226.
[12]	唐仕姗,杨万勤,殷睿,等.中国森林生态系统凋落叶分解速率的分布特征及其控制因子[J].植物生态学报,2014,38(6):529-539.
[13]	郭忠玲,郑金萍,马元丹,等.长白山各植被带主要树种凋落物分解速率及模型模拟的试验研究[J].生态学报,2006,26(4):1037-1046.
[14]	Zhang D,Hui D,Luo Y,et al.Rates of litter decomposition in terrestrial ecosystems: global patterns and controlling factors[J].Journal of Plant Ecology,2008,1(2):85-93.
[15]	刘颖,武耀祥,韩士杰,等.长白山四种森林类型凋落物分解动态[J].生态学杂志,2009,28(3):400-404.
[16]	罗达,史作民,唐敬超,等.南亚热带乡土树种人工纯林及混交林土壤微生物群落结构[J].应用生态学报,2014,25(9):2543-2550.
[17]	游巍斌,刘勇生,何东进,等.武夷山风景名胜区不同天然林凋落物分解特征[J].四川农业大学学报,2010,28(2):141-147.
[18]	刘颖,韩士杰,林鹿.长白山4种森林凋落物分解过程中养分动态变化[J].东北林业大学学报,2009,37(8):28-30.
[19]	Meier C L,Bowman W D.Links between plant litter chemistry,species diversity,and below-ground ecosystem function[J].Proceedings of the National Academy of Sciences,2008,105(50):19780-19785.
[20]	Krashevska V,Sandmann D,Maraun M,et al.Consequences of exclusion of precipitation on microorganisms and microbial consumers in montane tropical rainforests[J]. Oecologia,2012,170(4):1067-1076.
[21]	Mendonça E S,Stott D E.Characteristics and decomposition rates of pruning residues from a shaded coffee system in Southeastern Brazil[J].Agroforestry Systems,2003,57(2):117-125.
[22]	Jensen L S,Salo T,Palmason F,et al.Influence of biochemical quality on C and N mineralisation from a broad variety of plant materials in soil[J].Plant and Soil,2005,273(1-2):307-326.
[23]	Xu X,Hirata E.Decomposition patterns of leaf litter of seven common canopy species in a subtropical forest: N and P dynamics[J].Plant and Soil,2005,273(1-2):279-289.
[24]	Aerts R,de Caluwe H.Nutritional and plant-mediated controls on leaf litter decomposition of Carex species[J].Ecology,1997,78(1):244-260.
[25]	潘开文,何静,吴宁.森林凋落物对林地微生境的影响[J].应用生态学报,2004,15(1):153-158.
[26]	Maisto G,De Marco A,Meola A,et al.Nutrient dynamics in litter mixtures of four Mediterranean maquis species decomposing in situ[J].Soil Biology and Biochemistry,2011,43(3):520-530.
[27]	解宪丽,孙波,周慧珍,等.中国土壤有机碳密度和储量的估算与空间分布分析[J].土壤学报,2004,41(1):35-43.
[28]	Ohrui K,Mitchell M J,Bischoff J M.Effect of landscape position on N mineralization and nitrification in a forested watershed in the Adirondack Mountains of New York[J].Canadian Journal of Forest Research,1999,29(4):497-508.
[29]	陈印平,赵丽华,吴越华,等.森林凋落物与土壤质量的互作效应研究[J].世界科技研究与发展,2006,27(4):88-94.
[30]	Moore T R,Trofymow J A,Prescott C E,et al.Patterns of carbon,nitrogen and phosphorus dynamics in decomposing foliar litter in Canadian forests[J].Ecosystems,2006,9(1):46-62.
[31]	Moore T R,Trofymow J A,Prescott C E,et al.Nature and nurture in the dynamics of C,N and P during litter decomposition in Canadian forests[J].Plant and Soil,2011,339(1-2):163-175.

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Leaf Litter Decomposition and Its Relationship with Soil Properties in Betula alnoides and Eucalyptus urophylla × E. grandis

1. Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, Guangxi, China

2. Guangxi Youyiguan Forest Ecosystem Research Station, Pingxiang 532699, Guangxi, China

3. Linduo Forest Farm of Tian'e County, Tian'e 547300, Guangxi, China

Received Date: 2015-06-09

Abstract: [Objective]To study the decomposition dynamics of leaf litter and its relationship with soil chemical properties in two young plantation stands (monocultures of Betula alnoides and Eucalyptus urophylla × E. grandis) in subtropical China. [Method]The decomposition processes of leaf litter were measured using mesh nylon bag method. [Result]The decomposition coefficients of leaf litter of B. alnoides and E. urophylla × E. grandis were 0.96 a-1 and 0.88 a-1, respectively. During the 12-month decomposition, the organic carbon contents declined gradually in the two leaf litter. The total K and C/N ratio rapidly decrease at the early stage, and tended towards stability thereafter. The total N and total P in the two leaf litter increased gradually, whereas the N/P ratio increased at first and then decreased throughout the entire decomposition. In both early and late phase of decomposition, the dry mass loss of the leaf litter was correlated positively with the N contents (R=0.877 and 0.855, respectively), and a negative relation was observed with C/N ratio (R=-0.735 and-0.697, respectively). Compared with the E. urophylla × E. grandis stand, the B. alnoides had significantly higher contents of soil organic carbon (SOC), total N, total P, total K as well as higher N/P ratio in 0-10 and 10-20 cm soil depth. However, the litter decomposition had no significant effects on SOC, total K, pH, C/N ratio and N/P ratio in 20-30 cm soil depth. The correlation analysis revealed that the organic C of leaf litter was significantly related to SOC, total N, total P, total K and N/P ratio, whereas the total N of leaf litter was significantly related to soil total N, pH and C/N ratio. [Conclusion]The nutrient contents of leaf litter were found to be significantly correlated with the soil nutrient condition. Compared with the E. urophylla × E. grandis, the nutrient contents of leaf litter were significantly higher in B. alnoides, and subsequently, faster decomposition rate of leaf litter resulted in higher soil nutrient contents.

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Reference (31)

[1]	Berg B.Litter decomposition and organic matter turnover in northern forest soils[J].Forest Ecology and Management,2000,133(1):13-22.
[2]	Wang G G,Klinka K.White spruce foliar nutrient concentrations in relation to tree growth and soil nutrient amounts[J].Forest Ecology and Management,1997,98(1):89-99.
[3]	葛晓改,肖文发,曾立雄,等.不同林龄马尾松凋落物基质质量与土壤养分的关系[J].生态学报,2012,32(3):852-862.
[4]	Wang H,Liu S,Wang J,et al.Effects of tree species mixture on soil organic carbon stocks and greenhouse gas fluxes in subtropical plantations in China[J].Forest Ecology and Management,2013,300:4-13.
[5]	梁瑞龙.广西乡土阔叶树种资源现状及其发展对策[J].广西林业科学,2007,36(1):5-9.
[6]	周燕萍,庞正轰,黄弼昌,等.林朵林场西南桦造林试验[J].广西科学,2012,19(2):192-195.
[7]	Mo J,Brown S,Xue J,et al.Response of litter decomposition to simulated N deposition in disturbed,rehabilitated and mature forests in subtropical China[J].Plant and Soil,2006,282(1-2):135-151.
[8]	Ostertag R,Marín-Spiotta E,Silver W L,et al.Litterfall and decomposition in relation to soil carbon pools along a secondary forest chronosequence in Puerto Rico[J].Ecosystems,2008,11(5):701-714.
[9]	鲍士旦.土壤农化分析[M].南京:中国农业出版社,2000.
[10]	Olson J S.Energy storage and the balance of producers and decomposers in ecological systems[J].Ecology,1963,44(2):322-331.
[11]	宋新章,江洪,马元丹,等.中国东部气候带凋落物分解特征--气候和基质质量的综合影响[J].生态学报,2009,29(10):5219-5226.
[12]	唐仕姗,杨万勤,殷睿,等.中国森林生态系统凋落叶分解速率的分布特征及其控制因子[J].植物生态学报,2014,38(6):529-539.
[13]	郭忠玲,郑金萍,马元丹,等.长白山各植被带主要树种凋落物分解速率及模型模拟的试验研究[J].生态学报,2006,26(4):1037-1046.
[14]	Zhang D,Hui D,Luo Y,et al.Rates of litter decomposition in terrestrial ecosystems: global patterns and controlling factors[J].Journal of Plant Ecology,2008,1(2):85-93.
[15]	刘颖,武耀祥,韩士杰,等.长白山四种森林类型凋落物分解动态[J].生态学杂志,2009,28(3):400-404.
[16]	罗达,史作民,唐敬超,等.南亚热带乡土树种人工纯林及混交林土壤微生物群落结构[J].应用生态学报,2014,25(9):2543-2550.
[17]	游巍斌,刘勇生,何东进,等.武夷山风景名胜区不同天然林凋落物分解特征[J].四川农业大学学报,2010,28(2):141-147.
[18]	刘颖,韩士杰,林鹿.长白山4种森林凋落物分解过程中养分动态变化[J].东北林业大学学报,2009,37(8):28-30.
[19]	Meier C L,Bowman W D.Links between plant litter chemistry,species diversity,and below-ground ecosystem function[J].Proceedings of the National Academy of Sciences,2008,105(50):19780-19785.
[20]	Krashevska V,Sandmann D,Maraun M,et al.Consequences of exclusion of precipitation on microorganisms and microbial consumers in montane tropical rainforests[J]. Oecologia,2012,170(4):1067-1076.
[21]	Mendonça E S,Stott D E.Characteristics and decomposition rates of pruning residues from a shaded coffee system in Southeastern Brazil[J].Agroforestry Systems,2003,57(2):117-125.
[22]	Jensen L S,Salo T,Palmason F,et al.Influence of biochemical quality on C and N mineralisation from a broad variety of plant materials in soil[J].Plant and Soil,2005,273(1-2):307-326.
[23]	Xu X,Hirata E.Decomposition patterns of leaf litter of seven common canopy species in a subtropical forest: N and P dynamics[J].Plant and Soil,2005,273(1-2):279-289.
[24]	Aerts R,de Caluwe H.Nutritional and plant-mediated controls on leaf litter decomposition of Carex species[J].Ecology,1997,78(1):244-260.
[25]	潘开文,何静,吴宁.森林凋落物对林地微生境的影响[J].应用生态学报,2004,15(1):153-158.
[26]	Maisto G,De Marco A,Meola A,et al.Nutrient dynamics in litter mixtures of four Mediterranean maquis species decomposing in situ[J].Soil Biology and Biochemistry,2011,43(3):520-530.
[27]	解宪丽,孙波,周慧珍,等.中国土壤有机碳密度和储量的估算与空间分布分析[J].土壤学报,2004,41(1):35-43.
[28]	Ohrui K,Mitchell M J,Bischoff J M.Effect of landscape position on N mineralization and nitrification in a forested watershed in the Adirondack Mountains of New York[J].Canadian Journal of Forest Research,1999,29(4):497-508.
[29]	陈印平,赵丽华,吴越华,等.森林凋落物与土壤质量的互作效应研究[J].世界科技研究与发展,2006,27(4):88-94.
[30]	Moore T R,Trofymow J A,Prescott C E,et al.Patterns of carbon,nitrogen and phosphorus dynamics in decomposing foliar litter in Canadian forests[J].Ecosystems,2006,9(1):46-62.
[31]	Moore T R,Trofymow J A,Prescott C E,et al.Nature and nurture in the dynamics of C,N and P during litter decomposition in Canadian forests[J].Plant and Soil,2011,339(1-2):163-175.

Leaf Litter Decomposition and Its Relationship with Soil Properties in Betula alnoides and Eucalyptus urophylla × E. grandis

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通讯作者: 陈斌, bchen63@163.com

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Leaf Litter Decomposition and Its Relationship with Soil Properties in Betula alnoides and Eucalyptus urophylla × E. grandis

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