Relationship Between Decomposition Characteristics of Litters and Soil Nutrients in Tibetan Fir Forest Under Different Habitat Conditions

Dai Songjia; Duan Fei; Fang Jiangping; Long Chunlin; Zhou Chenni

doi:10.13961/j.cnki.stbctb.2020.03.009

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Relationship Between Decomposition Characteristics of Litters and Soil Nutrients in Tibetan Fir Forest Under Different Habitat Conditions

- Relationship Between Decomposition Characteristics of Litters and Soil Nutrients in Tibetan Fir Forest Under Different Habitat Conditions
- Bulletin of Soiland Water Conservation Vol. 40, Issue 3, Pages: 56-63(2020)
- 作者机构：
  
  1. 中央民族大学生命与环境科学学院,北京,100081
  2. 西藏农牧学院高原生态研究所,西藏,林芝,860000
  3. 西藏自治区生态安全联合实验室,西藏,林芝,860000
  4. 西藏农牧学院西藏高原森林生态教育部重点实验室,西藏,林芝,860000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.03.009
  CLC： Q149;S718.52
- Published：2020
- 稿件说明：
移动端阅览
Dai Songjia, Duan Fei, Fang Jiangping, et al. Relationship Between Decomposition Characteristics of Litters and Soil Nutrients in Tibetan Fir Forest Under Different Habitat Conditions[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 56-63.
DOI：

Dai Songjia, Duan Fei, Fang Jiangping, et al. Relationship Between Decomposition Characteristics of Litters and Soil Nutrients in Tibetan Fir Forest Under Different Habitat Conditions[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 56-63. DOI： 10.13961/j.cnki.stbctb.2020.03.009.

摘要

[目的

]

研究不同生境条件下（林内、林外、林缘）藏东南急尖长苞冷杉林（Abies georgei var.smithii）凋落物分解特征与土壤养分特征之间的关系，为深入了解高寒高山森林生态系统物质循环过程提供依据。[方法

]

采用野外分解袋法和室内分析相结合，在林内、林外、林缘3种不同生境条件下对藏东南急尖长苞冷杉林凋落物进行了原位分解试验。[结果

]

分解速率总体上呈现出：林内 > 林缘 > 林外的特点，逐月分解率的变异系数表现为：林内（34.83%）

林缘（57.35%）

林外（72.09%）；Olson指数衰减模型的模拟结果显示不同生境条件下（林内、林缘、林外）凋落物分解50%需要的时间为2.11，2.52，2.34 a，分解95%需要的时间为8.96，10.01，10.84 a；3种不同生境土壤养分在空间上差异显著，林内生境中与凋落物分解速率呈现极显著相关的土壤养分因子有土壤总有机碳（TOC）含量、N含量、土壤微生物量碳（SMBC）含量、土壤微生物量氮（SMBN）含量以及W

：W

值；林外、林缘生境中与凋落物分解速率相关性最大的为土壤TOC含量，其次为W

：W

值。[结论

]

生境条件的差异对凋落物分解速率有显著影响，在不同的生境条件下对凋落物分解影响起主导作用的土壤养分因素不同，凋落物—土壤生物地化循环紧密联系，相互作用关系复杂，生境作用效应突出。

Abstract

[Objective] The relationship between litter decomposition characteristics and soil nutrient characteristics of Abies georgei var. smithii forest in Southeastern Tibet under different habitat conditions

i.e.

in forest (IF)

outside forest (OF)

and beside forest (BF) was studied to provide basic data for further understanding the material circulation process of the alpine forest ecosystem.[Methods] Based on field decomposition bag method and indoor analysis

in situ decomposition experiments were conducted on A. georgei forest litters in Southeast Tibet under three different habitats.[Results] The decomposition rate showed the characteristics of IF > BF > OF

and the variation coefficient of the monthly decomposition rate represented the characteristics of IF (34.83%) < BF(57.35%) < OF (72.09%). According to the simulation results of the Olson exponential decay model

the decomposition times of litters in different habitat conditions (IF

and OF) were 2.11

2.52

and 2.34 years

respectively

and 95% of decomposition times were 8.96

10.01

and 10.84 years

respectively. Soil nutrients in the three different habitats were significantly different in space. The soil nutrient factors in the forest habitats with significant correlation with the litter decomposition rate were soil total organic carbon (TOC) content

N content

soil microbial biomass carbon content

soil microbial biomass nitrogen content

and WC:WN value. The soil TOC content was maximum correlated with the decomposition rate of litter in the habitats outside and at forest margins

followed by WC:WN value.[Conclusion] The difference of habitat conditions had a significant impact on the decomposition rate and nutrient release rate of litters

and different soil nutrient factors played a leading role in the decomposition of litters under different habitat conditions. The litter-soil biogeochemical cycle was closely related to complex interaction and a prominent habitat effect.

关键词

Keywords

references

Bray S R, Kitajima K, Mack M C. Temporal dynamics of microbial communities on decomposing leaf litter of 10 plant species in relation to decomposition rate [J]. Soil Biology and Biochemistry, 2012,49:30-37.

刘晶,谢婉余,张巧明,等.黄土丘陵区不同植物凋落叶片的分解及养分释放特性[J].草业学报,2018,27(9):25-33.

刘涛,孙守琴,邱阳.川西亚高山生态系统三种典型植物凋落物分解动态特征[J].山地学报,2017,35(5):663-668.

Moore T R, Group C W, Trofymow J A, 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.

曲浩,赵学勇,赵哈林,等.陆地生态系统凋落物分解研究进展[J].草业科学,2010,27(8):44-51.

Hobbie S E. Plant species effects on nutrient cycling: Revisiting litter feedbacks [J]. Trends in Ecology & Evolution, 2015,30(6):357-363.

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.

丁新景,解国磊,敬如岩,等.黄河三角洲不同人工刺槐混交林凋落物分解特性[J].水土保持学报,2016,30(4):249-253.

金龙,吴志祥,杨川,等.不同林龄橡胶凋落物叶分解特性与有机碳动态研究[J].热带作物学报,2015,36(4):698-705.

刘秉儒,张秀珍,胡天华,等.贺兰山不同海拔典型植被带土壤微生物多样性[J].生态学报,2013,33(22):7211-7220.

Aerts R, de Caluwe H. Nutritional and plant-mediated controls on leaf litter decomposition of Carex species [J]. Ecology, 1997,78(1):244.

裴蓓,高国荣.凋落物分解对森林土壤碳库影响的研究进展[J].中国农学通报,2018,34(26):58-64.

Wardle D A. Ecological linkages between aboveground and belowground biota [J]. Science, 2004,304(5677): 1629-1633.

徐胜,付伟,平琴,等.气候变化对树木凋落物分解的影响研究进展[J].生态学杂志,2017,36(11):3266-3272.

吴鹏,王襄平,张新平,等.东北地区森林凋落叶分解速率与气候、林型、林分光照的关系[J].生态学报,2016,36(8):2223-2232.

吴庆贵,吴福忠,谭波,等.高山森林林窗对凋落叶分解的影响[J].生态学报,2016,36(12):3537-3545.

吴庆贵,谭波,杨万勤,等.亚高山森林林窗大小对凋落叶木质素降解的影响[J].生态学报,2016,36(18):5701-5711.

李文华.西藏暗针叶林概论[J].资源科学,1982,4(2):1-16.

徐凤翔.西藏森林的特点、规律及其生态成因初析[J].南京林业大学学报(自然科学版),1982,6(3):84-96.

方江平,巴青翁姆.西藏原始林芝云杉林凋落物养分归还规律[J].自然资源学报, 2013,28(7):1139-1145.

Vance E D, Brookes P C, Jenkinson D S. An extraction method for measuring soil microbial biomass C [J]. Soil Biology and Biochemistry, 1987,19(6):703-707.

Brookes P C, Landman A, Pruden G, et al. Chloroform fumigation and the release of soil nitrogen: A rapid direct extraction method to measure microbial biomass nitrogen in soil [J]. Soil Biology and Biochemistry, 1985,17(6):837-842.

Moro M. Litter decomposition in four woody species in a mediterranean climate: Weight loss, N and P dynamics [J]. Annals of Botany, 2000,86(6):1065-1071.

徐波,朱忠福,李金洋,等.九寨沟国家自然保护区4个典型树种叶片凋落物在林下及高山湖泊中的分解及养分释放特征 [J].植物生态学报,2016,40(9):883-892.

武启骞,吴福忠,杨万勤,等.季节性雪被对高山森林凋落物分解的影响[J].植物生态学报,2013,37(4):296-305.

Ladanai S, gren G I, Olsson B A. Relationships between tree and soil properties in

Picea abies

and

Pinus sylvestris

forests in Sweden [J]. Ecosystems, 2010,13(2):302-316.

张泰东,王传宽,张全智.帽儿山5种林型土壤碳氮磷化学计量关系的垂直变化[J].应用生态学报,2017,28(10):3135-3143.

罗佳,周小玲,陈建华,等.桉树人工林土壤养分对凋落物分解的影响[J].中南林业科技大学学报,2017,37(11):132-139.

Gartner T B, Cardon Z G. Site of leaf origin affects how mixed litter decomposes [J]. Soil Biology and Biochemistry, 2006,38(8):2307-2317.

Nottingham A T, Turner B L, Whitaker J, et al. Soil microbial nutrient constraints along a tropical forest elevation gradient: A belowground test of a biogeochemical paradigm [J]. Biogeosciences, 2015,12(20):6071-6083.

Boerner R E J. Foliar nutrient dynamics and nutrient use efficiency of four deciduous tree species in relation to site fertility [J]. The Journal of Applied Ecology, 1984,21(3):1029.

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.

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