Effects litter decomposition characteristics of dominant plants on soil microbial community in Horqin Sandy Land

doi:10.7522/j.issn.1000-694X.2025.00099

Journal of Desert Research ›› 2025, Vol. 45 ›› Issue (4): 190-199.DOI: 10.7522/j.issn.1000-694X.2025.00099

Effects litter decomposition characteristics of dominant plants on soil microbial community in Horqin Sandy Land

Zhiying Ning¹(), Yulin Li³, Xueyong Zhao³, Yanjun Zhang⁴, Haibing Wang¹^,², Min Yan¹^,², Ruimin Liu¹, Heju Zuo¹^,²()

^1.Desert Management College /, Inner Mongolia Agricultural University，Hohhot 010010，China
^2.State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Inner Mongolia Agricultural University，Hohhot 010010，China
^3.Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China
^4.Hohhot Ecological Environment Monitoring Center，Hohhot 010030，China

Received:2025-05-11 Revised:2025-06-26 Online:2025-07-20 Published:2025-08-18
Contact: Heju Zuo

Abstract

Abstract:

We conducted a comprehensive analysis of the litter decomposition characteristics of 6 dominant plant species and their impacts on soil microbial community structure in the Horqin Sandy Land. We used field-based litter decomposition experiments and microbial high-throughput sequencing technology. The results indicated that the decomposition rate of litter followed the order： Chenopodium acuminatum>Caragana microphylla>Setarria viridis>Artemisia halodendron>Cleistogenes squarrosa>Lespedeza bicolor. The initial nitrogen （N） content， lignin content， C∶N ratio， and lignin∶N ratio of the litter were identified as the critical factors influencing the rate of decomposition. After 15 months of decomposition， Actinobacteria， Proteobacteria， Chloroflexi， and Acidobacteria emerged as the predominant phyla within the bacterial community， while Ascomycota dominated the fungal community. The species diversity and richness of the bacterial community increased significantly， whereas the species diversity of the fungal community decreased markedly. The richness of the fungal community was positively correlated with the initial litter C∶N and lignin∶N ratios， but negatively correlated with the initial N content. Furthermore， the relative abundances of Actinobacteria， and Acidobacteria in the bacterial community， as well as Basidiomycota， Mucormycota， and Zoopagomycota， in the fungal community， were positively associated with the initial cellulose and hemicellulose contents， C∶N ratio， and lignin∶N ratio of the litter.

Key words: Horqin Sandy Land, litter decomposition, microorganism

CLC Number:

P941.73

Zhiying Ning, Yulin Li, Xueyong Zhao, Yanjun Zhang, Haibing Wang, Min Yan, Ruimin Liu, Heju Zuo. Effects litter decomposition characteristics of dominant plants on soil microbial community in Horqin Sandy Land[J]. Journal of Desert Research, 2025, 45(4): 190-199.

Figures/Tables 6

References 35

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化学组成	狗尾草	糙隐子草	达乌里胡枝子	小叶锦鸡儿	盐蒿	尖头叶藜
纤维素/（mg·g^-1）	460.29±5.11^a	460.72±7.90^a	270.09±6.43^bc	283.00±6.79^bc	289.95±6.85^b	265.08±11.92^c
半纤维素/（mg·g^-1）	242.06±5.97^a	248.30±2.00^a	78.11±2.55^c	98.22±4.54^d	83.52±0.22^c	50.89±1.89^d
木质素/（mg·g^-1）	95.30±2.53^d	105.26±1.86^c	145.18±5.00^a	74.85±2.80^e	123.34±2.40^b	56.79±1.31^f
C含量/%	42.02±0.30^d	45.04±0.16^b	45.98±0.14^a	44.27±0.25^c	44.10±0.09^c	37.38±0.46^e
N含量/%	0.77±0.02^e	1.23±0.09^d	2.44±0.01^c	3.18±0.02^b	2.48±0.01^c	3.32±0.01^a
C∶N	54.48±1.11^a	37.46±2.50^b	18.87±0.17^c	13.91±0.10^d	17.75±0.08^c	11.23±0.11^d
木质素∶N	12.32±0.19^a	8.75±0.57^b	5.96±0.24^c	2.34±0.07^e	4.96±0.11^d	1.71±0.04^d

化学组成	狗尾草	糙隐子草	达乌里胡枝子	小叶锦鸡儿	盐蒿	尖头叶藜
纤维素/（mg·g^-1）	460.29±5.11^a	460.72±7.90^a	270.09±6.43^bc	283.00±6.79^bc	289.95±6.85^b	265.08±11.92^c
半纤维素/（mg·g^-1）	242.06±5.97^a	248.30±2.00^a	78.11±2.55^c	98.22±4.54^d	83.52±0.22^c	50.89±1.89^d
木质素/（mg·g^-1）	95.30±2.53^d	105.26±1.86^c	145.18±5.00^a	74.85±2.80^e	123.34±2.40^b	56.79±1.31^f
C含量/%	42.02±0.30^d	45.04±0.16^b	45.98±0.14^a	44.27±0.25^c	44.10±0.09^c	37.38±0.46^e
N含量/%	0.77±0.02^e	1.23±0.09^d	2.44±0.01^c	3.18±0.02^b	2.48±0.01^c	3.32±0.01^a
C∶N	54.48±1.11^a	37.46±2.50^b	18.87±0.17^c	13.91±0.10^d	17.75±0.08^c	11.23±0.11^d
木质素∶N	12.32±0.19^a	8.75±0.57^b	5.96±0.24^c	2.34±0.07^e	4.96±0.11^d	1.71±0.04^d

Effects litter decomposition characteristics of dominant plants on soil microbial community in Horqin Sandy Land

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