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

doi:10.12302/j.issn.1000-2006.202101018

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2022, Vol. 46 ›› Issue (4): 127-134.doi: 10.12302/j.issn.1000-2006.202101018

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

XIA Jie¹^,²(), CHEN Sheng¹, WU Yifan¹, ZHANG Wei¹, XIE Jinzhong¹^,^*()

1. Research Institute of Subtropical Forestry,Chinese Academy of Forestry,Hangzhou 311400, China
2. College of Forestry, Nanjing Forestry University, Nanjing 210037, China

Received:2021-01-13 Revised:2021-06-15 Online:2022-07-30 Published:2022-08-01
Contact: XIE Jinzhong E-mail:18404969158@163.com;jzhxie@163.net

Abstract

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.

Key words: Phyllostachys edulis forest, Dictyophora indusiata, soil microbial biomass(SMB), soil microbial entropy, soil-microbia stoichiometry imbalance

CLC Number:

S718.5

XIA Jie, CHEN Sheng, WU Yifan, ZHANG Wei, XIE Jinzhong. 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.

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处理treatment	q_MBC	q_MBN	q_MBP	C_imb/N_imb	C_imb/P_imb	N_imb/P_imb
CK	2.80±0.13 c	17.04±0.60 c	6.38±0.16 d	6.09±0.21 b	2.28±0.06 c	0.37±0.01 b
T0	5.57±0.19 a	33.10±1.37 a	10.05±0.78 c	5.94±0.05 b	1.80±0.10 d	0.30±0.02 c
T1	4.81±0.26 b	16.01±0.43 c	14.12±1.09 a	3.34±0.27 c	2.95±0.38 b	0.88±0.04 a
T2	2.96±0.09 c	27.71±0.71 b	11.44±0.54 b	9.37±0.52 a	3.87±0.29 a	0.41±0.01 b

参数 parameter	SOC	TN	TP	MBC	MBN	MBP	q_MBC	q_MBN	q_MBP	C_imb/N_imb	C_imb/P_imb
TN	0.208
TP	-0.769^**	-0.415
MBC	0.203	0.480	-0.751^**
MBN	0.792^**	-0.001	-0.890^**	0.646^*
MBP	0.077	0.946^**	-0.202	0.230	-0.214
q_MBC	0.050	0.487	-0.644^*	0.987^**	0.419	0.257
q_MBN	0.752^**	-0.134	-0.828^**	0.487	0.991^**	-0.340	0.361
q_MBP	0.339	0.961^**	-0.530	0.458	0.134	0.937^**	0.443	0.003
C_imb/N_imb	0.697^*	-0.416	-0.195	-0.450	-0.493	-0.393	-0.579^*	0.534	-0.262
C_imb/P_imb	0.486	0.389	-0.054	-0.460	-0.047	0.544	-0.523	-0.111	0.499	0.499
N_imb/P_imb	-0.298	0.825^**	0.121	0.132	-0.543	0.917^**	0.214	-0.647^*	0.747^**	-0.656^*	0.324

参数 parameter	PC1	PC2	PC3
SOC	0.150	-0.029	-0.217
TN	0.137	-0.149	0.109
TP	-0.173	-0.070	0.024
MBC	0.133	0.127	0.178
MBN	0.152	0.122	-0.098
MBP	0.098	-0.206	0.086
q_MBC	0.118	0.130	0.222
q_MBN	0.138	0.147	-0.111
q_MBP	0.148	-0.141	0.057
C_imb/N_imb	-0.033	0.387	0.039
C_imb/P_imb	-0.044	0.213	0.193
N_imb/P_imb	-0.031	0.217	-0.195
特征根 characteristic polynomial	5.552	3.940	2.508
贡献率/% contribution rate	46.268	32.835	20.897
累计贡献率/% cumulative contribution rate	46.268	79.103	100.000

处理 treatment	PC1	排名 rank	PC2	排名 rank	PC3	排名 rank	PC	综合排名 rank
T0	0.70	1	1.28	1	0.35	2	0.82	1
T1	0.36	3	-1.06	4	1.00	1	0.03	2
T2	0.42	2	-0.44	3	-1.37	4	-0.24	3
CK	-1.48	4	0.22	2	0.03	3	-0.61	4

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

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[2]	LU Peng, XIE Jinzhong, TONG Long, WANG Ling, CHEN Lijie, ZHANG Wei, GENG Yanghui, LYU Yukui. Study on the wild imitation cultivation technique for Dictyophora indusiata in Dendrocalamus latiflorus stands [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2016, 40(04): 177-182.
[3]	XU Hanmei, RUAN Honghua. Effect of the snow storm on the leaf litter decomposition and its nutrients releasing of Phyllostachys edulis ecosystem in the Wuyi Mountains [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2013, 37(06): 69-72.