Response of Forest Stand Types to Soil Stoichiometric Characteristics, Microorganisms and Their Seasonal Dynamics in Liziping Nature Reserve

LU Qiwei; TUO Yunfei; FENG Yongyu; LI Jianqiang; SHI Rui; WANG Shu; ZHU Xuehu; HE Xiahong

doi:10.13870/j.cnki.stbcxb.2024.05.035

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Response of Forest Stand Types to Soil Stoichiometric Characteristics, Microorganisms and Their Seasonal Dynamics in Liziping Nature Reserve

更新时间：2025-02-18

- Response of Forest Stand Types to Soil Stoichiometric Characteristics, Microorganisms and Their Seasonal Dynamics in Liziping Nature Reserve
- Vol. 38, Issue 5, Pages: 285-295(2024)
- 作者机构：
  
  1. 西南林业大学水土保持学院,昆明,650224
  2. 云南省林下资源保护与利用重点实验室,昆明,650224
  3. 四川栗子坪国家级自然保护区管理局, 四川石棉,625400
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2024.05.035
  CLC： S714.2
- Published：2024
- 稿件说明：
移动端阅览
LU Qiwei, TUO Yunfei, FENG Yongyu, et al. Response of Forest Stand Types to Soil Stoichiometric Characteristics, Microorganisms and Their Seasonal Dynamics in Liziping Nature Reserve[J]. 2024, 38(5): 285-295.
DOI：

LU Qiwei, TUO Yunfei, FENG Yongyu, et al. Response of Forest Stand Types to Soil Stoichiometric Characteristics, Microorganisms and Their Seasonal Dynamics in Liziping Nature Reserve[J]. 2024, 38(5): 285-295. DOI： 10.13870/j.cnki.stbcxb.2024.05.035.

摘要

[目的] 为揭示栗子坪自然保护区林分类型对土壤有机碳、氮、磷含量的垂直分布特征、土壤化学计量特征(C/N、C/P、N/P)、酶活性、微生物及其季节响应。[方法] 选取旱季、雨季的青冈-川杨阔叶混交林、栓皮栎落叶阔叶林、冷杉-云杉针叶混交林和石棉玉山竹竹林土壤为研究对象

阐明林分类型对土壤化学计量特征、酶活性、微生物及其季节动态响应特征。[结果] (1)4个林分类型土壤理化性质和酶活性均表现为雨季大于旱季;(2) C/N在青冈-川杨阔叶混交林、冷杉-云杉针叶混交林表现为旱季大于雨季

其余2个林分反之;N/P在栓皮栎落叶阔叶林、冷杉-云杉针叶混交林表现为旱季大于雨季

其余2个林分反之;(3)不同林分类型土壤C/N、C/P、N/P比值旱季时依次为17.00~37.33

62.72~114.5

3.09~5.18

雨季时依次为17.72~39.16

63.21~90.72

2.39~5.80;(4)旱季、雨季C/N和C/P均高于全国平均水平(11.90

61.00)

表明养分循环过程中氮受限

且释放P的潜力较低;2个季节N/P均低于全国土壤平均水平(5.20)

表明土壤更容易受到N限制;(5)4个林分类型土壤微生物物活性在雨季均优于旱季

且土壤生态化学计量特征主要受到酶活性及微生物影响。[结论] 研究结果可为探究区域土壤养分分解、供应和限制及其循环过程对季节响应机制提供重要理论依据。

Abstract

[Objective]To reveal the vertical distribution characteristics of soil organic carbon

nitrogen

and phosphorus content

soil stoichiometric characteristics (C/N

C/P

N/P)

enzyme activity

microorganisms

and their seasonal responses of forest stand types in Liziping Nature Reserve. [Methods]The soils of Cyclobalanopsis and populus szechuanica broad-leaved mixed forest

Oriental oak deciduous broad-leaved forest

Fir-spruce coniferous mixed forest

and Yushania lineolata forest in the dry and rainy seasons were selected as the study objects to elucidate the effects of forest stand types on the stoichiometric characteristics of the soils

the enzyme activities

the microorganisms

and their seasonal dynamic response characteristics. [Results] (1) The soil physicochemical properties and enzyme activity of the four forest stand types are higher in the rainy season than in the dry season. (2) The soil C/N in the Cyclobalanopsis-populus szechuanica broad-leaved mixed forest is higher in the dry season than in the rainy season

while the other three stands show the opposite trend. Dry season's C/P are higher than the rainy season in Cyclobalanopsis and populus szechuanica broad-leaved mixed forest and Fir-spruce coniferous mixed forest

while the other two stands are the opposite.Dry season's N/P are higher than the rainy season in Oriental oak deciduous broad-leaved forest and Fir-spruce coniferous mixed forest

while the other two stands are the opposite. (3) Different forest types' value variation of soil C/N

C/P

and N/P are 17.00~37.33

62.72~114.50

3.09~5.18 in the dry season

and 17.72~39.16

63.21~90.72

2.39~5.80 in the rainy season. (4) The C/N and C/P values during the dry and rainy seasons are higher than the national average (11.90

61.00)

indicating that nitrogen is limited during nutrient cycling and the potential for releasing P is low; The N/P values for both seasons were lower than the national average soil level (5.20)

indicating that the soil is more susceptible to N limitation; (5) The soil microbial activity of the four forest stand types is better in the rainy season than in the dry season

and the soil ecological stoichiometric characteristics are mainly influenced by enzyme activity and microorganisms. [Conclusion] The results of this study can provide important theoretical basis for exploring the seasonal response mechanisms of regional soil nutrient decomposition

supply and limitation

as well as nutrient cycling processes.

关键词

Keywords

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