Effects of Different Logging Residue Treatments on Acid Hydrolyzed Soil Organic Carbon Fractions and Soil Microbial Communities in a Chinese Fir Plantation

LANG Caifang; WU Chuanjing; XU Enlan; LIN Weisheng; LIU Xiaofei; GUO Jianfen

doi:10.13870/j.cnki.stbcxb.2025.01.002

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Effects of Different Logging Residue Treatments on Acid Hydrolyzed Soil Organic Carbon Fractions and Soil Microbial Communities in a Chinese Fir Plantation

更新时间：2025-03-14

- Effects of Different Logging Residue Treatments on Acid Hydrolyzed Soil Organic Carbon Fractions and Soil Microbial Communities in a Chinese Fir Plantation
- Vol. 39, Issue 1, Pages: 170-177(2025)
- 作者机构：
  
  1. 福建省植物生理生态重点实验室,福州,350117
  2. 福建三明森林生态系统国家野外科学观测研究站,福建,三明,365002
  3. 福建师范大学地理研究所,福州,350117
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2025.01.002
  CLC： S714.6
- Published：2025
- 稿件说明：
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LANG Caifang, WU Chuanjing, XU Enlan, et al. Effects of Different Logging Residue Treatments on Acid Hydrolyzed Soil Organic Carbon Fractions and Soil Microbial Communities in a Chinese Fir Plantation[J]. 2025, 39(1): 170-177.
DOI：

LANG Caifang, WU Chuanjing, XU Enlan, et al. Effects of Different Logging Residue Treatments on Acid Hydrolyzed Soil Organic Carbon Fractions and Soil Microbial Communities in a Chinese Fir Plantation[J]. 2025, 39(1): 170-177. DOI： 10.13870/j.cnki.stbcxb.2025.01.002.

摘要

目的酸解有机碳是土壤中重要的有机碳组分，其质量分数变化将影响土壤微生物群落组成，为探讨土壤酸解有机碳和微生物群落对森林采伐剩余物不同处理方式的响应。方法对福建三明格氏栲自然保护区杉木成熟林的采伐剩余物进行清除(R)、火烧(RB)和保留(RR)3种处理，在种植杉木3 a后采集不同土层(0~10、10~20 cm)土壤，对土壤酸解有机碳组分(活性组分Ⅰ、Ⅱ及惰性组分)和微生物群落进行研究。结果1) 采伐剩余物处理对0~10 cm土层土壤酸解有机碳组分无显著影响。10~20 cm土层，RR和R处理下活性组分Ⅰ(LPⅠ)质量分数(7.2、6.8 g/kg)明显高于RB(4.7 g/kg)处理，RB处理活性组分Ⅱ(LPⅡ)和惰性组分(RP)质量分数(1.06、3.59 g/kg)显著低于R(1.32、7.79 g/kg)处理。RB处理0~10 cm土层土壤酸解有机碳组分质量分数均明显高于10~20 cm土层。2)0~10 cm土层RB处理微生物生物量碳质量分数(335.1 mg/g)显著低于RR和R(540，453.7 mg/g)处理，不同处理各土层土壤微生物生物量氮均无显著性差异。各土层RR处理土壤微生物生物量磷和总PLFAs质量分数都显著高于RB处理。0~10 cm土层RB处理F∶B显著高于RR和R处理，RR处理GP∶GN显著高于RB和R处理。3)土壤酸解有机碳组分与总微生物生物量及各微生物类群PLFAs质量分数均呈正相关。结论保留采伐剩余物处理有利于将不同土壤有机碳组分质量分数维持在较高水平，并对土壤微生物生物量和土壤微生物群落组成具有积极作用。研究结果对于采取合理的杉木林经营措施和提高土壤生产力有重要意义。

Abstract

ObjectiveAcid hydrolyzed soil organic carbon fractions are important in soil

and the changes of their contents will affect soil microbial community composition. The study aimed to investigate the response of acid hydrolyzed soil organic carbon fractions and soil microbial communities to different logging residue treatments.MethodsThree treatments

including residue removed (R)

residue burnt (RB) and residue retained (RR)

were applied to a Chinese fir plantation in the Castanopsis kawakamii Nature Reserve in Sanming

Fujian

and soils in different soil layers (0—10

10—20 cm) were collected three years after planting young Chinese fir to study acid hydrolyzed soil organic carbon fractions (labile fraction Ⅰ

Ⅱ and recalcitrant fraction) and microbial community.Results1) Different logging residue treatments had no significant effect on acid hydrolyzed soil organic carbon fractions in the 0—10 cm soil layer. In the 10—20 cm soil layer

the content of labile fraction Ⅰ (LPⅠ) was significantly higher in the RR (7.2 g/kg) and R (6.8 g/kg) treatments than in the RB (4.7 g/kg) treatment

and the contents of labile fraction Ⅱ (LPⅡ

1.06 g/kg) and recalcitrant fraction (RP

3.59 g/kg) in the RB treatment were significantly lower than those in the R treatment (1.32 and 7.79 g/kg

respectively). The contents of acid hydrolyzed soil organic carbon fractions in the 0—10 cm soil layer of the RB treatment were all significantly higher than those in the 10—20 cm soil layer. 2) The microbial biomass carbon content of the RB treatment in the 0—10 cm soil layer (335.1 mg/g) was significantly lower than that of the RR (540 mg/g) and R (453.7 mg/g) treatments

but there was no significant difference in soil microbial biomass nitrogen in each soil layer among different treatments. Soil microbial biomass phosphorus content and total PLFAs in the two soil layers were significantly higher in the RR treatment than in the RB treatment. In the 0—10 cm soil layer

the F∶B ratio was significantly higher in the RB treatment than in the RR and R treatments

while GP∶GN ratio was significantly higher in the RR treatment than in the RB and R treatments. 3) There were positive correlations between acid hydrolyzed soil organic carbon fractions and total microbial biomass and PLFAs content of each microbial taxon.ConclusionRetention of logging residue treatments facilitated the maintenance of different soil organic carbon fractions at high levels and had a positive effect on soil microbial biomass and soil microbial community composition. This study is of great significance for taking reasonable management measures of Chinese fir plantations and improving soil productivity.

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