种植竹荪后毛竹林土壤微生物生物量和微生物熵的动态变化

夏捷; 陈胜; 吴一凡; 张玮; 谢锦忠

doi:10.12302/j.issn.1000-2006.202101018

夏捷, 陈胜, 吴一凡, 张玮, 谢锦忠

南京林业大学学报（自然科学版） ›› 2022, Vol. 46 ›› Issue (4) : 127-134.

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南京林业大学学报（自然科学版） ›› 2022, Vol. 46 ›› Issue (4) : 127-134. DOI: 10.12302/j.issn.1000-2006.202101018

研究论文

种植竹荪后毛竹林土壤微生物生物量和微生物熵的动态变化

夏捷 ¹^,² ,
陈胜 ¹ ,
吴一凡 ¹ ,
张玮 ¹ ,
谢锦忠 ¹^,^*

作者信息 +

Dynamic changes of soil microbial biomass and microbial entropy after planting Dictyophora indusiata in Phyllostachys edulis forests

XIA Jie ¹^,² ,
CHEN Sheng ¹ ,
WU Yifan ¹ ,
ZHANG Wei ¹ ,
XIE Jinzhong ¹^,^*

Author information +

文章历史 +

摘要

【目的】竹林下种植竹荪会对林地微生物活动产生影响,明确种植竹荪对毛竹林地土壤微生物生物量、微生物熵及其化学计量不平衡性的影响,揭示竹荪种植后毛竹林地土壤质量的变化,为竹-菌复合生态系统的经营提供参考。【方法】以未种植竹荪(CK)和竹荪收获完成时立即取样(T0),以及收获后1 a(T1)、2 a(T2)的林地土壤为研究对象,测定并分析不同处理林地土壤微生物生物量、微生物熵变化规律及其与土壤-微生物化学计量不平衡性间的耦合关系。【结果】与未种植竹荪林地相比,竹荪种植后林地土壤有机碳(SOC)、全氮(TN),土壤微生物生物量碳、氮、磷(MBC、MBN、MBP)含量和土壤微生物熵碳、氮、磷(q_MBC、q_MBN、q_MBP)总体上均明显升高,而土壤全磷(TP)含量显著降低。随竹荪收获后间隔时间的延长,土壤MBC含量和q_MBC呈降低趋势;土壤MBN含量和q_MBN均呈先明显降低后略升高趋势,而土壤SOC含量呈先显著降低后显著升高趋势;土壤TN、TP、MBP含量及q_MBP均呈先升高后降低趋势,T1土壤TN、TP、MBP含量及q_MBP显著高于T0和T2。土壤-微生物碳氮化学计量不平衡性(记为C_imb/N_imb)、碳磷化学计量不平衡性(记为C_imb/P_imb)和氮磷化学计量不平衡性(记为N_imb/P_imb)均以竹荪收获当年(T0)处理较低。MBC与MBN呈显著正相关,MBC、MBN与C_imb/N_imb、C_imb/P_imb均呈负相关,MBP与C_imb/P_imb、N_imb/P_imb呈正相关。【结论】种植竹荪后林地土壤质量短期内较未种植林地土壤有明显提升,种植竹荪可以改善毛竹林地土壤质量;竹荪刚收获后毛竹林地土壤质量最优,随着竹荪收获后间隔年份的增加,林地土壤质量呈现劣变趋势,且较未种植竹荪林地土壤质量差。

Abstract

【Objective】 Dictyophora indusiata planted in a Phyllostachys edulis forest could influence the microbial activity of soil. The study aimed to reveal the changes in soil quality and provide a reference for the management of bamboo-fungus composite ecosystems by analyzing the effects of D. indusiata on the biomass, entropy and stoichiometry imbalance of soil microbia in a P. edulis forest. 【Method】 Using the soils of non-planted D. indusiata (CK) and those after 0 (T0), 1 (T1) and 2 (T2) years of D. indusiata harvest, the relationships among soil microbial biomass, microbial entropy, and soil-microbial stoichiometry imbalance were investigated in different treatments. 【Result】 The results indicated that the soil organic carbon (SOC), total nitrogen (TN), soil microbial biomass carbon and nitrogen (MBC, MBN), and soil microbial entropy carbon, nitrogen, phosphorus (q_MBC, q_MBN, q_MBP) in T0, T1, T2 soils were significantly higher than those in the control, whereas the soil total phosphorus (TP) content was significantly lower than that in the control. Soil MBC and q_MBC gradually decreased with the increasing harvest time. Soil MBN and q_MBN initially decreased and then increased slightly, whereas soil SOC content initially decreased and then increased significantly; Soil TN, TP, MBP and q_MBP increased initially and then decreased. The TN, TP, MBP and q_MBP in T1 soil were significantly higher than those in T0 and T2 soils. The soil-microbial stoichiometry (C_imb/N_imb, C_imb/P_imb, N_imb/P_imb) of T0 had the lowest imbalance compared with the other periods. Soil MBC was positively correlated with MBN and both were negatively correlated with C_imb/N_imb and C_imb/P_imb. Soil MBP was positively correlated with C_imb/P_imb and N_imb/P_imb. 【Conclusion】 The soil quality of P. edulis forests was improved significantly in the short term after planting D. indusiata. However, the soil quality of P. edulis forests tends to deteriorate with the increasing annual gap after the harvest of D. indusiata, and the soil quality is worse than that of P. edulis forest without planting D. indusiata; The best soil quality in the P. edulis forest was observed just after the harvest of D. indusiata.

导出引用

夏捷, 陈胜, 吴一凡, 等. 种植竹荪后毛竹林土壤微生物生物量和微生物熵的动态变化[J]. 南京林业大学学报（自然科学版）. 2022, 46(4): 127-134 https://doi.org/10.12302/j.issn.1000-2006.202101018

XIA Jie, CHEN Sheng, WU Yifan, et al. Dynamic changes of soil microbial biomass and microbial entropy after planting Dictyophora indusiata in Phyllostachys edulis forests[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2022, 46(4): 127-134 https://doi.org/10.12302/j.issn.1000-2006.202101018

中图分类号： S718.5

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