Intensive fertilization (N, P, K, Ca, and S) decreases organic matter decomposition in paddy soil

Liu, Yuhuai; Zang, Huadong; Ge, Tida; Bai, Jing; Lu, Shouxiang; Zhou, Ping; Peng, Peiqing; Shibistova, Olga; Zhu, Zhenke; Wu, Jinshui; Guggenberger, Georg

doi:10.1016/j.apsoil.2018.02.012

Cited by 51 publications

(18 citation statements)

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“…The SOM accumulation upon N fertilization occurs primarily in occluded particulate organic matter (Zak, Freedman, Upchurch, Steffens, & Kögel‐Knabner, ). Long‐term mineral and/or organic N fertilization facilitates C sequestration by increasing soil С input from larger plant biomass and manure (Dai et al, ; Liang et al, ; Zang, Qian, et al, ), and by reducing SOM decomposition (Liu et al, ; Xiao, Zang, Ge, et al, ; Xiao, Zang, Liu, et al, ). Organic N stimulates SOM decomposition more than mineral N (Chen et al, ) due to an increase of microbial activity and more necromass production (Liang et al, ).…”

Section: Introductionmentioning

confidence: 99%

Temperature sensitivity of soil organic matter mineralization decreases with long‐term N fertilization: Evidence from four Q₁₀ estimation approaches

et al. 2019

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Climate warming and anthropogenic nitrogen (N) loads are two major global change components interactively affecting carbon cycling. However, the effects of N forms and amounts on temperature sensitivity (Q10) of soil organic matter (SOM) mineralization remain incomplete. With this goal, soil was sampled after 23 years of mineral and (or) organic N fertilization, and then incubated for one year at 10, 20, and 30°C. For the first time, we compared four approaches (Equal time, Equal C, 1‐C pool, and 2‐C pool model) to evaluate the Q10 of SOM mineralization. All approaches showed that the Q10 decreased by more than one third with N fertilization compared to unfertilized control at low temperatures. The '1‐C pool model' was not adequate for Q10 estimation with various C availability. The Q10 estimated by '2‐C pool model' was strongly depended on incubation duration. The 'Equal C' approach was more powerful for separating SOM pools and it revealed the decreased Q10 of the recalcitrant pool at high N rates. The impact of N fertilization on Q10 was more evident at high N than at low N. Notably, the Q10 decreased more by mineral N compared to organic fertilizers (~60% vs. ~40% decreased in Q10) at 10–20oC. The added benefit of N fertilization in protecting SOM under climate warming was demonstrated by decreased Q10. Such one‐third reduction of temperature sensitivity by N fertilization is large enough to be considered in predictions of global SOM stocks under warming and anthropogenic N loads.

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Section: Introductionmentioning

confidence: 99%

Temperature sensitivity of soil organic matter mineralization decreases with long‐term N fertilization: Evidence from four Q₁₀ estimation approaches

et al. 2019

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“…Mineralization is an important process at nature ecosystem (Addiscott, 2010). Plants obtain part of nutrients requirements through microbial mineralization from various organic sources (Liu et al, 2018). Plant nutrients could not take up from the soil and remain trapped in dead plant material and litter.…”

Section: Introductionmentioning

confidence: 99%

Identification of Fungal Dynamics Associated With Black Locust Leaves Mineralization and Their Correlations With Physicochemical Factors

Chen

Zhang²,

Wen

2020

Front. Microbiol.

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In this study, the fungal dynamics associated with black locust (BL) mineralization and its correlation with various environmental factors were evaluated across three different vegetation types along a gradient of temperature and humidity. The results confirmed that Ascomycota and Basidiomycota were the dominant phyla in each habitat, with average relative abundance of 86.57 and 11.42%, respectively. But both phylum abundance varied significantly among different BL leaves' decomposing habitats. Black locust changed the most significantly in the forest habitat and the least in the steppe. In addition, the litter characteristics of BL decreased with total carbon and total nitrogen mineralization and underground water level in water-rich region, while this result was significantly consistent with the fungal diversity. Co-occurrence network studies revealed that significant correlations were found between fungal community composition and environmental factors, the decrease of underground water level influence the fungal structure in forest habitat. Finally, the present study results provide important insights about the biological invasion of new ecosystems.

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“…Nitrogen fertilization increases root biomass, enhancing the absolute amount of assimilated C translocated into the roots and soil (Ge et al, ). However, the mineralization of assimilated C in soil is accelerated with N fertilizer added (Liu et al, ; Zang, Blagodatskaya, Wang, Xu, & Kuzyakov, ), which results in an opposite effect to N fertilization on net rhizodeposits C remaining stabilized for long periods. Nitrogen fertilization also affects C cycling in soil by changing the turnover rate of SOC (Zang et al, ), the efficiency of microbial C reutilization (Blagodatsky, Yevdokimov, Larionova, & Richter, ) and the stabilization of recently assimilated C in soil (Atere et al, ; Zhu et al, ).…”

Section: Introductionmentioning

confidence: 99%

Effect of nitrogen fertilizer on rice photosynthate allocation and carbon input in paddy soil

Xiao

Zang

et al. 2019

European J Soil Science

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The photosynthate carbon (C) released in the rhizosphere plays a crucial role in C sequestration, microbial activities and nutrient availability in soil. Nitrogen (N) fertilization modifies the allocation and dynamics of photosynthates in paddy rice systems, but these effects depend on plant growth stages. Rice (Oryza sativa L.) plants were pulse labelled with 13CO2 at the tillering, elongation, heading and grain‐filling stages with 0 and 225 kg N ha−1 fertilizer. The plants and soil were sampled shortly after each pulse labelling and at harvest. Relative 13C (as % of assimilated C) in the roots and rhizosphere soil was largest at the early growth stage (tillering) and subsequently decreased. At harvest, 68% of the rhizodeposited C remained in bulk soil without N fertilizer, which corresponded to 6.2% of the net assimilated 13C. The absolute amount of net belowground C input (root + rhizodeposition) by rice was 268 and 468 kg C ha−1 under 0 and 225 kg N ha−1 fertilizer, of which rhizodeposition accounted for 60 and 40%, respectively. We concluded that N fertilization raised the belowground C input by rice mainly by increasing root biomass rather than by rhizodeposition. Highlights Rice photosynthesis‐derived carbon (C) was quantified in soil by multiple pulse labelling with 13CO2 Young rice plants allocated more assimilates into the soil compared to mature plants Nitrogen deficiency led to greater C retention in bulk soil than in the rhizosphere Nitrogen fertilization increased the net belowground C input mainly with larger root biomass

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Intensive fertilization (N, P, K, Ca, and S) decreases organic matter decomposition in paddy soil

Cited by 51 publications

References 48 publications

Temperature sensitivity of soil organic matter mineralization decreases with long‐term N fertilization: Evidence from four Q₁₀ estimation approaches

Temperature sensitivity of soil organic matter mineralization decreases with long‐term N fertilization: Evidence from four Q₁₀ estimation approaches

Identification of Fungal Dynamics Associated With Black Locust Leaves Mineralization and Their Correlations With Physicochemical Factors

Effect of nitrogen fertilizer on rice photosynthate allocation and carbon input in paddy soil

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Intensive fertilization (N, P, K, Ca, and S) decreases organic matter decomposition in paddy soil

Cited by 51 publications

References 48 publications

Temperature sensitivity of soil organic matter mineralization decreases with long‐term N fertilization: Evidence from four Q10 estimation approaches

Temperature sensitivity of soil organic matter mineralization decreases with long‐term N fertilization: Evidence from four Q10 estimation approaches

Identification of Fungal Dynamics Associated With Black Locust Leaves Mineralization and Their Correlations With Physicochemical Factors

Effect of nitrogen fertilizer on rice photosynthate allocation and carbon input in paddy soil

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Temperature sensitivity of soil organic matter mineralization decreases with long‐term N fertilization: Evidence from four Q₁₀ estimation approaches

Temperature sensitivity of soil organic matter mineralization decreases with long‐term N fertilization: Evidence from four Q₁₀ estimation approaches