大兴安岭重度火烧迹地不同林龄落叶松人工林土壤团聚体养分特征

韦自强; 郑磊; 贺怀宇; 王振国; 伊怀虎; 任鹏; 辛颖

doi:10.13870/j.cnki.stbcxb.2024.01.024

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大兴安岭重度火烧迹地不同林龄落叶松人工林土壤团聚体养分特征

更新时间：2025-03-12

- 大兴安岭重度火烧迹地不同林龄落叶松人工林土壤团聚体养分特征
- Nutrient Characteristics of Soil Aggregates in
- 水土保持学报 2024年38卷第1期页码：347-356
- 作者机构：
  
  1. 林木遗传育种全国重点实验室(东北林业大学),哈尔滨,150040
  2. 辽宁省本溪市城市运行服务中心,辽宁,本溪,117099
  3. 大兴安岭林业集团公司阿木尔林业局, 黑龙江漠河,165302
- 作者简介：
  
  [ "韦自强(1997—),男,硕士研究生,主要从事水土保持与荒漠化防治研究。E-mail:wzq6661997hhh@163.com" ]
- 基金信息：
  
  中央高校基本科研业务费专项资金项目(2572019BA11);国家重点研发计划项目(2021YFD2200303);林木遗传育种国家重点实验室创新项目(2022A03)
- DOI：10.13870/j.cnki.stbcxb.2024.01.024
  中图分类号： S714.2
- 纸质出版：2024
- 稿件说明：
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韦自强, 郑磊, 贺怀宇, 等. 大兴安岭重度火烧迹地不同林龄落叶松人工林土壤团聚体养分特征[J]. 水土保持学报, 2024,38(1):347-356.

WEI Ziqiang, ZHENG Lei, HE Huaiyu, et al. Nutrient Characteristics of Soil Aggregates in[J]. 2024, 38(1): 347-356.
韦自强, 郑磊, 贺怀宇, 等. 大兴安岭重度火烧迹地不同林龄落叶松人工林土壤团聚体养分特征[J]. 水土保持学报, 2024,38(1):347-356. DOI： 10.13870/j.cnki.stbcxb.2024.01.024.

WEI Ziqiang, ZHENG Lei, HE Huaiyu, et al. Nutrient Characteristics of Soil Aggregates in[J]. 2024, 38(1): 347-356. DOI： 10.13870/j.cnki.stbcxb.2024.01.024.

摘要

[目的] 为探寻大兴安岭重度火烧迹地植被恢复后不同林龄落叶松人工林下土壤团聚体养分含量与分布的变化。[方法] 以大兴安岭1987年发生特大森林火灾形成的重度火烧迹地上分别在1989年、2000年、2010年种植的落叶松人工林(11

32年)作为研究对象

通过测定土壤团聚体各粒级有机碳、全氮、全磷、碱解氮、速效磷和速效钾的含量

开展土壤团聚体养分分布特征研究。[结果] (1)在重度火烧迹地上不同林龄的落叶松人工林中

土壤各粒级团聚体有机碳、全氮、全磷、碱解氮和速效钾的含量均随着粒径的减小逐渐上升

＜0.5 mm粒级含量最大。(2)随着落叶松人工林林龄的增长

土壤各粒级团聚体有机碳、全氮、全磷、碱解氮和速效磷含量均逐渐上升。32年落叶松人工林土壤团聚体有机碳、全氮、全磷、碱解氮和速效磷含量相较于11年落叶松人工林分别显著增加77.35%~130.24%

77.61%~143.36%

105.84%~147.98%

94.58%~155.96%

206.98%~537.09%(p＜0.05)。21年落叶松人工林土壤各粒级团聚体有机碳含量高于11年落叶松人工林

但二者无明显差异。(3)土壤各粒级团聚体有机碳与全氮和碱解氮极显著相关(p＜0.01)

土壤有机碳和碱解氮含量与＜0.25 mm粒级含量相关性最强

全氮、全磷、速效磷和速效钾与＞0.25 mm粒级含量极显著相关(p＜0.01)。[结论] 落叶松人工林土壤团聚体养分呈表聚现象。大兴安岭重度火烧迹地上种植的落叶松人工林

随着林龄的增大土壤团聚体养分含量增加

种植32年的落叶松人工林显著提升土壤团聚体的养分含量

研究结果可为大兴安岭重度火烧迹地人工植被恢复工作提供科学依据。

Abstract

[Objective] In order to know the changes of nutrient content and distribution of soil aggregates under Larix gmelinii plantation of different forest ages after vegetation restoration in severely burned areas of Greater Khingan Mountains.[Methods] Takes the Larix gmelinii plantation (11

21 and 32 years) planted in 1989

2000 and 2010 on the severely burned areas formed by the severe forest fire in Greater Khingan Mountains in 1987 as the research object. By measuring the contents of organic carbon

total nitrogen

total phosphorus

alkali-hydrolyzed nitrogen

available phosphorus and available potassium in soil aggregates

the nutrient distribution characteristics of soil aggregates were studied. [Results] (1) The contents of organic carbon

total nitrogen

total phosphorus

alkali-hydrolyzed nitrogen and available potassium in soil aggregates of different particle sizes increased gradually with the decrease of particle size

and the content of < 0.5 mm particle size was the largest. (2) As the age of forest increased

the content of organic carbon

total nitrogen

total phosphorus

alkali hydrolyzed nitrogen and available phosphorus in soil aggregates gradually increased. The nutrient content of soil aggregates in 32 years Larix gmelinii plantation was significantly higher than that in 11 years Larix gmelinii plantation. The contents of organic carbon

total nitrogen

total phosphorus

alkali-hydrolyzed nitrogen and available phosphorus in soil aggregates were significantly increased by 77.35%~130.24%

77.61%~143.36%

105.84%~147.98%

94.58%~155.96% and 206.98% ~ 537.09%

respectively

compared with 11 years Larix gmelinii plantation (p < 0.05). The organic carbon content of soil aggregates at different particle sizes in 21 years was higher than that in 11 years Larix gmelinii plantation

but there was no significant difference. (3) There was a strong correlation between organic carbon and total nitrogen and alkali-hydrolyzed nitrogen in soil aggregates (p < 0.01). Soil organic carbon and alkali-hydrolyzed nitrogen content had the strongest correlation with < 0.25 mm fraction content. Total nitrogen

total phosphorus

available phosphorus and available potassium had the strongest correlation with > 0.25 mm fraction content (p < 0.01). [Conclusion] The nutrient of soil aggregates in Larix gmelinii plantation showed surface aggregation. The nutrient content of soil aggregates in Larix gmelinii plantations planted on severely burned areas in Greater Khingan Mountains increased with the increase of forest age. The Larix gmelinii plantation planted for 32 years significantly increased the nutrient content of soil aggregates. The results provide a scientific basis for the restoration of artificial vegetation in the severely burned area of Greater Khingan Mountains.

关键词

Keywords

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