四川栗子坪自然保护区不同海拔土壤氮组分垂直特征及季节动态

谭豪; 脱云飞; 冯永钰; 贺莉莎; 畅翔; 陆其伟; 何霞红

doi:10.13870/j.cnki.stbcxb.2024.02.016

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四川栗子坪自然保护区不同海拔土壤氮组分垂直特征及季节动态

更新时间：2025-03-12

- 四川栗子坪自然保护区不同海拔土壤氮组分垂直特征及季节动态
- Vertical Characteristics and Seasonal Dynamics of Soil Nitrogen Components at Different Elevations in Liziping Nature Reserve, Sichuan
- 水土保持学报 2024年38卷第2期页码：234-245
- 作者机构：
  
  西南林业大学生态与环境学院,昆明,650224
- 作者简介：
- 基金信息：
  
  四川省栗子坪国家级自然保护区陆生动物生境调查研究项目(2021ZD0125);国家自然科学基金项目(51979134);2021年度云南省农业联合专项面上项目(202101BD070001-077);云南省基础研究重点项目(202201AS070034);云南省教育厅科学研究基金项目(2021J0164);云南省重大科技项目(202102AE090042);昆明市重大科技项目(2021JH002)
- DOI：10.13870/j.cnki.stbcxb.2024.02.016
  中图分类号： S153.6
- 纸质出版：2024
- 稿件说明：
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谭豪, 脱云飞, 冯永钰, 等. 四川栗子坪自然保护区不同海拔土壤氮组分垂直特征及季节动态[J]. 水土保持学报, 2024,38(2):234-245.

TAN Hao, TUO Yunfei, FENG Yongyu, et al. Vertical Characteristics and Seasonal Dynamics of Soil Nitrogen Components at Different Elevations in Liziping Nature Reserve, Sichuan[J]. 2024, 38(2): 234-245.
谭豪, 脱云飞, 冯永钰, 等. 四川栗子坪自然保护区不同海拔土壤氮组分垂直特征及季节动态[J]. 水土保持学报, 2024,38(2):234-245. DOI： 10.13870/j.cnki.stbcxb.2024.02.016.

TAN Hao, TUO Yunfei, FENG Yongyu, et al. Vertical Characteristics and Seasonal Dynamics of Soil Nitrogen Components at Different Elevations in Liziping Nature Reserve, Sichuan[J]. 2024, 38(2): 234-245. DOI： 10.13870/j.cnki.stbcxb.2024.02.016.

摘要

[目的] 为揭示四川栗子坪国家级自然保护区土壤氮组分(全氮、水解氮、铵态氮、硝态氮)沿海拔梯度的垂直分布差异及其与理化因子响应关系。[方法] 于2022年3

12月测定并分析四川栗子坪海拔1 800

2 100

2 400

2 700 m土壤氮组分及理化因子的垂直变化特征

并采用多变量方差分析及冗余分析法

分析环境因子与氮组分的关系及季节动态。[结果] (1)海拔、季节及交互作用对土壤氮组分有显著影响

12月铵态氮含量表现为海拔2 100 m＞2 400 m＞1 800 m＞2 700 m

硝态氮含量表现为海拔2 400 m＞2 100 m＞2 700 m＞1 800 m

沿月份梯度增加

全氮含量呈增加趋势

水解氮、铵态氮、硝态氮含量呈先减后增趋势

12月全氮和硝态氮含量有最大值分别为1.25 g/kg和8.26 mg/kg

3月水解氮和铵态氮含量有最大值185.14

5.80 mg/kg。全氮、水解氮、铵态氮、硝态氮沿土层变化规律有一致性

呈"V"形;(2)不同季节和海拔理化因子垂直变化特征与氮组分差异较大

土壤全磷、有效磷、速效钾含量沿土层深度增加先增后减;(3)影响土壤氮组分的关键因子存在季节差异

12月为有机质、非毛管孔隙度、速效钾、全磷、有效磷和毛管孔隙度

9月为有机质、全钾、毛管孔隙度、全磷和速效钾。[结论] 研究结果为自然保护土壤养分对海拔和季节响应机制及生态保护综合治理提供具体生产实践依据。

Abstract

[Objective] To reveal the vertical distribution differences of soil nitrogen components (total nitrogen

hydrolyzed nitrogen

ammonium nitrogen

nitrate nitrogen) in Liziping National Nature Reserve in Sichuan Province and their relationships with physicochemical factors. [Methods] In March

June

September and December 2022

the vertical variation characteristics of soil nitrogen components and physicochemical factors at altitudes of 1 800 m

2 100 m

2 400 m and 2 700 m in Liziping

Sichuan Province were determined and analyzed

and the relationship between environmental factors and nitrogen components and their seasonal differences were analyzed by multivariate analysis of variance and redundancy analysis. [Results] (1) Altitude

season and their interaction had significant effects on soil nitrogen composition

and in March

June

September and December the ammonium nitrogen content was 2 100 m＞2 400 m＞1 800 m＞2 700 m above sea level

and the nitrate nitrogen content was 2 400 m＞2 100 m＞2 700 m＞1 800 m above sea level

and the gradient increased over the month

the contents of total nitrogen and nitrate nitrogen showed a trend of increasing first

with the maximum content of total nitrogen and nitrate nitrogen being 1.25 g/kg and 8.26 mg/kg

respectively

in December

and the maximum content of hydrolyzed nitrogen and ammonium nitrogen in March being 185.14 mg/kg and 5.80 mg/kg respectively. The variation of total nitrogen

hydrolyzed nitrogen

ammonium nitrogen and nitrate nitrogen along the soil layer was consistent

and formed a "V" shape. (2) The vertical variation characteristics between physicochemical factors and nitrogen components in different seasons and altitudes were significantly different

and the contents of total phosphorus

available phosphorus and available potassium increased first and then decreased along the depth of soil layer. (3) Seasonal differences in the key factors affecting soil nitrogen composition

organic matter

non-capillary porosity

available potassium

total phosphorus

available phosphorus and capillary porosity in March and December

and organic matter

total potassium and capillary porosity

total phosphorus and available potassium in June and September. [Conclusion] This study provides a specific production practice basis for the response mechanism of soil nutrients to altitude and season and the comprehensive management of ecological conservation in nature reserve.

关键词

Keywords

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