Influence of strip cutting management on soil bacterial community structure and diversity in Phyllostachys edulis stands

doi:10.12302/j.issn.1000-2006.202004038

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2021, Vol. 45 ›› Issue (2): 60-68.doi: 10.12302/j.issn.1000-2006.202004038

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Influence of strip cutting management on soil bacterial community structure and diversity in Phyllostachys edulis stands

WANG Shumei¹(), WANG Bo², FAN Shaohui¹, XIAO Xiao¹, XIA Wen¹, GUAN Fengying¹^,^*()

1. Key Laboratory for Bamboo and Rattan, International Center for Bamboo and Rattan, Beijing 100102, China
2. Yixing Forest Farm of Jiangsu Province, Yixing 214200, China

Received:2020-04-18 Accepted:2020-11-05 Online:2021-03-30 Published:2021-04-09
Contact: GUAN Fengying E-mail:wsmpaper@163.com;guanfy@icbr.ac.cn

Abstract

Abstract:

【Objective】In order to provide scientific guidance for understanding the management of bamboo (Phyllostachys edulis) forests stands and restoration of soil ecosystems, the impact of strip cutting on soil bacterial community structure and diversity was studied. 【Method】Soil samples were collected from P. edulis stands of different widths (3, 9 and 15 m) after 25 d at Yixing, Jiangsu Province. V3-V4 regions were sequenced using the Illumina MiSeq High Throughput Sequencing to identify soil bacteria and predict functional groups. Soil organic matter, total N, total P, total K, available N, available P and available K were analyzed using standard methods.【Result】With the increase in cutting width, the contents of soil available P, total K, and available K decreased, while the contents of soil organic matter, and total and available N initially increased and then decreased. The selection of the appropriate cutting width could improve soil fertility, but when the cutting width exceeded a certain limit, the soil fertility and the content of available nutrients decreased. Strip cutting management had an impact on the soil bacterial abundance, diversity and evenness. At a cutting width of 3 m, the soil bacterial community was richer, and species distribution was more uniform than others. With the increase in the cutting width, the bacterial community richness and uniformity in the P. edulis forest decreased. When the cutting width exceeded a certain level, the difference in species composition between communities decreased. Strip cutting increased the diversity of Proteobacteria and decreased that of Acidobacteria and Chloroflexi. Proteobacteria, Actinobacteria, Acidobacteria and chloroflexi belong to the same functional group in the stripped soil of the bamboo forest, stimulating carbon and nitrogen fixation and the transformation and decomposition of other nutrients. The main metabolic pathways after strip cutting were carbohydrate and amino acid production.【Conclusion】Comprehensive analyses showed that strip cutting of P. edulis forests had a significant influence on the soil bacterial community structure and diversity. The shorter width (3 m) strip cutting could increase the abundance and diversity of soil bacteria and nutrient content. However, with the increase in strip-cutting width, the various indicators decreased. After strip cutting, soil microbial groups mainly acted on the fixation, decomposition, and transformation of C and N.

Key words: Phyllostachys edulis, strip cutting, soil bacteria, bacterial biodiversity, bacterial community richness, function prediction

CLC Number:

S718.83

WANG Shumei, WANG Bo, FAN Shaohui, XIAO Xiao, XIA Wen, GUAN Fengying. Influence of strip cutting management on soil bacterial community structure and diversity in Phyllostachys edulis stands[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2021, 45(2): 60-68.

Figures/Tables 7

Table 1

Fig.1

Fig.2

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Table 2

Table 3

Fig.4

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处理 treatment	有机质/ (g·kg^-1) organic matter	全氮/ (g·kg^-1) total N	碱解氮/ (mg·kg^-1) available N	全磷/ (g·kg^-1) total P	有效磷/ (mg·kg^-1) available P	全钾/ (g·kg^-1) total K	速效钾/ (mg·kg^-1) available K
CK	27.49±1.20 b	1.48±0.02 a	114.13±1.08 b	0.26±0.02 b	0.73±0.03 a	10.30±0.55 a	43.16±2.21 a
A3	30.70±0.43 a	1.50±0.03 a	121.61±0.97 a	0.26±0.01 b	0.71±0.03 a	9.80±0.23 a	39.44±1.68 b
A9	28.27±0.80 b	1.37±0.01 b	101.73±1.82 c	0.26±0.01 b	0.65±0.10 a	9.77±0.21 a	37.83±1.02 b
A15	25.30±0.29 c	1.26±0.04 c	101.97±1.64 c	0.32±0.02 a	0.63±0.13 a	9.62±0.47 a	34.37±1.94 c

门 Phylum	相对丰度/% relative abundances
门 Phylum	CK	A3	A9	A15
变形菌门 Proteobacteria	32.39±2.32 b	34.19±1.55 b	41.64±3.22 a	39.37±2.22 a
放线菌门 Actinobacteria	30.55±4.01 ab	36.14±1.05 a	29.37±3.09 b	27.61±4.32 b
酸杆菌门 Acidobacteria	17.50±1.17 a	12.78±0.40 b	12.60±0.25 b	12.65±1.37 b
绿湾菌门 Chloroflexi	6.56±1.00 a	6.13±0.92 a	5.46±1.83 a	5.86±0.56 a
疣微菌门 Verrucomicrobia	4.08±0.74 a	3.66±0.48 a	3.97±0.75 a	5.07±0.93 a
浮霉菌门 Planctomycetes	2.39±0.50 ab	1.33±0.40 b	1.92±0.21 ab	3.05±1.06 a
芽单胞菌门 Gemmatimonadetes	2.06±0.44 a	1.52±0.21 b	1.16±0.13 b	1.34±0.14 b
匿杆菌门 Latescibacteria	0.50±0.26 a	0.71±0.15 a	0.48±0.25 a	0.85±0.22 a
Patescibacteria	0.48±0.13 b	0.43±0.15 b	0.50±0.22 b	1.10±0.40 a
Rokubacteria	0.32±0.10 b	0.58±0.23 ab	0.63±0.13 ab	0.75±0.18 a
其他 other	3.17±0.20 a	2.53±0.06 b	2.26±0.21 b	2.35±0.51 b

门 Phylum	有机质 organic matter	全氮 total N	碱解氮 available N	全磷 total P	有效磷 available P	全钾 total K	速效钾 available K
变形菌门 Proteobacteria	-0.369	-0.644^*	0.180	-0.522	-0.811^**	-0.383	-0.658^*
放线菌门 Actinobacteria	0.684^*	0.621^*	-0.332	0.356	0.721^**	0.434	0.374
酸杆菌门 Acidobacteria	-0.062	0.415	-0.190	0.508	0.306	0.347	0.684^*
绿湾菌门 Chloroflexi	0.062	0.210	-0.097	0.180	0.319	-0.185	0.331

Influence of strip cutting management on soil bacterial community structure and diversity in Phyllostachys edulis stands

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