王　款, 梁诗强, 程刘涛, 姚　智, 满家瑞, 胡亚林, 王玉哲. 马尾松采伐剩余物堆烧对土壤养分元素含量的短期影响[J]. 土壤通报, 2024, 55(5): 1376 − 1385. DOI: 10.19336/j.cnki.trtb.2023092603
引用本文: 王　款, 梁诗强, 程刘涛, 姚　智, 满家瑞, 胡亚林, 王玉哲. 马尾松采伐剩余物堆烧对土壤养分元素含量的短期影响[J]. 土壤通报, 2024, 55(5): 1376 − 1385. DOI: 10.19336/j.cnki.trtb.2023092603
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WANG Kuan, LIANG Shi-qiang, CHENG Liu-tao, YAO Zhi, MAN Jia-rui, HU Ya-lin, WANG Yu-zhe. Effects of Pile Burning on Soil Nutrient Contents in a Harvested Pinus massoniana Plantation[J]. Chinese Journal of Soil Science, 2024, 55(5): 1376 − 1385. DOI: 10.19336/j.cnki.trtb.2023092603
Citation: WANG Kuan, LIANG Shi-qiang, CHENG Liu-tao, YAO Zhi, MAN Jia-rui, HU Ya-lin, WANG Yu-zhe. Effects of Pile Burning on Soil Nutrient Contents in a Harvested Pinus massoniana Plantation[J]. Chinese Journal of Soil Science, 2024, 55(5): 1376 − 1385. DOI: 10.19336/j.cnki.trtb.2023092603
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马尾松采伐剩余物堆烧对土壤养分元素含量的短期影响

Effects of Pile Burning on Soil Nutrient Contents in a Harvested Pinus massoniana Plantation

    摘要
  • 摘要:
    目的 研究堆烧马尾松疫木采伐剩余物对土壤养分的短期影响，为制定科学的林地土壤肥力保持和植被恢复措施提供理论依据。
    方法 以中亚热带马尾松采伐迹地为研究对象，在堆烧1 d后采集未火烧对照和火堆不同位置（中心、边缘）的0 ~ 5 cm和5 ~ 10 cm土壤，测定土壤pH、含水量、有机质、全碳（C），以及氮（N）、磷（P）、钾（K）、钙（Ca）、镁（Mg）、钠（Na）、铁（Fe）、锰（Mn）和铝（Al））全量和有效态含量，并计算Fe/Mn、Ca/Al、Ca/Mg和SPAR值。
    结果 ①与未火烧土壤相比，堆烧后土壤pH、有效K、有效Ca含量和Ca/Mg值分别显著提高了3.19%、50.83%、56.13%和28.01%。②火堆中心处的土壤质量含水量、有机质、全C和全N含量分别显著降低了14.66%、15.90%、19.97%和17.25%，而土壤Ca/Al值显著提高了107.01%；火堆边缘处的土壤质量含水量、有机质、全C含量和Ca/Al值与未火烧土壤无显著差异。③火堆中心处的0 ~ 5 cm土壤有效P含量显著提高了67.88%，而堆烧对5 ~ 10 cm土壤有效P含量无显著影响。④堆烧对土壤全量P、K、Ca、Mg、Fe、Mn、Al、Na、Fe/Mn和SPAR值均无显著影响。⑤主成分分析结果显示，堆烧显著改变了0 ~ 5 cm土壤性质，且土壤全C是驱动土壤性质变化的主要因子。
    结论 堆烧在短期内提高了马尾松林土壤P、K和Ca元素的有效性，且火干扰后的植被恢复措施应重点考虑火堆中心位置。

     

    Abstract:
    Objective The aim was to investigate the short-term effect of piled burning nematode-infected harvest residues of Pinus massoniana on soil nutrient availability, in order to provide insightful information for maintaining soil fertility and enhancing vegetation restoration in the burnt plantation.
    Method Soils were collected at 0 ~ 5 and 5 ~ 10 cm depth from the unburnt area and different positions (center and edge) of the post-fire piles one day after burning in a recently harvested P. massoniana in mid-subtropical China. Soil pH, moisture content, organic matter, total carbon (C), the total and available contents of (N, P, K, Ca, Mg, Na, Fe, Mn, and Al) were measured, and Fe/Mn, Ca/Al, Ca/Mg, and SPAR were also calculated.
    Result ① Soil pH, available K and Ca concentrations, and Ca/Mg in the burnt area were significantly increased by 3.19%, 50.83%, 56.13%, and 28.01% compared to the unburnt control. ② Soil moisture, organic matter, total C and total N concentrations in the center of the piles were significantly reduced by 14.66%, 15.90%, 19.97%, and 17.25%, respectively. However, the burning increased soil Ca/Al ratio by 107.01%. There was no significant difference in soil moisture, organic matter, and total C concentrations as well as the Ca/Al ratio between the edge of the burnt pile and the control. ③ Soil available P concentration at 0 ~ 5 cm depth in the center of the pile was significantly increased by 67.88% than that of the unburnt control, while no significant change was observed in the 5 ~ 10 cm soil. ④Pile burning had no significant effect on soil total P, K, Ca, Mg, Na, Fe, Mn, and Al concentrations, and Fe/Mn and SPAR. ⑤The principal component analysis showed that pile burning changed soil properties at the 0 - 5 cm but not the 5 - 10 cm soil layer, and soil total C was the key factor driving the change in soil properties.
    Conclusion Pile burning improved the availabilities of P, K and Ca in recently harvested P. massoniana plantations in the short term, and the center of piles should be taken into account in maintaining forest fertility and restoring vegetation.

     

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