Interactions of soil nutrients and microbial communities during root decomposition of gramineous and leguminous forages

Bibliographic Data

ID21649567
AuthorsCan Ma (State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest Agriculture and Forestry Yangling PR China), Xiuru Wang (State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest Agriculture and Forestry Yangling PR China), Jianjia Wang (0000-0003-1983-1632, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest Agriculture and Forestry Yangling PR China), Xiaoyue Zhu (0000-0002-8286-2100, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest Agriculture and Forestry Yangling PR China), Chao Qin (0000-0003-0393-5330, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest Agriculture and Forestry Yangling PR China), Ye Zeng (0000-0001-5440-6194, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest Agriculture and Forestry Yangling PR China), Wenlong Zhen (0000-0002-9254-1853, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest Agriculture and Forestry Yangling PR China), Yan Fang (0009-0008-3325-6973, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest Agriculture and Forestry Yangling PR China, corresponding author), Zhouping Shangguan (0000-0002-5815-6310, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest Agriculture and Forestry Yangling PR China)
Year2023
Volume34
Issue11
Pages3250-3261
Publication date2023-07-15
Open AccessYes
TypeARTICLE
VenueLand Degradation and Development (JOURNAL)
Journal identifiersISSN: 1085-3278 • E-ISSN: 1099-145X
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ldr.4680
OpenAlexW4323536312
LanguageEN
Citations received4
References cited40

Soil microorganisms are involved in the litter decomposition process and are closely related to nutrient cycling in ecosystems, especially carbon (C) and nitrogen (N) cycling. For grassland ecosystems, most grassland biomass is invested in the root system. Therefore, to determine the influence of root decomposition on soil microorganisms in different grassland species, an in‐situ root decomposition experiment was conducted with two species (gramineous forage: Bothriochloa ischaemum and leguminous forage: Lespedeza davurica ) over three decomposition times (90, 270 and 450 days). Total organic carbon (TOC) and total nitrogen (TN) in the roots of the two species decreased gradually. And L. davurica had higher soil organic carbon (SOC) and soil total nitrogen (STN) in the late stage. Proteobacteria, Chloroflexi and Acidobacteria were the dominant bacteria, and Ascomycota and Basidiomycota were the dominant fungi in the two species. STN is the most important factor driving changes in soil microbial communities. The alpha diversity index of bacteria in both species showed an increasing trend, while in fungi, it decreased rapidly at the early stage and increased slightly at the late stage. Compared with the bacteria in B. ischaemum , L. davurica increased some submetabolic system pathway genes related to carbon cycle metabolism. FUNGuild revealed that saprotrophic fungi on the 90 th day were significantly lower than those on the 270 th and 450 th days. Our results show that leguminous forages have better performance in improving SOC and STN, and microbial characteristics are also affected by species during root decomposition

Acidobacteria · Agronomy · Bacteria · Biology · Botany · Nitrogen · Nitrogen Cycle · Nutrient · Nutrient cycle · Proteobacteria · Soil carbon · Soil water · Chemistry · Mycorrhizal Fungi and Plant Interactions · Plant-Microbe Interactions and Immunity · Soil Carbon and Nitrogen Dynamics · Ecology

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