Consistent effects of canopy vs. understory nitrogen addition on the soil exchangeable cations and microbial community in two contrasting forests

Shi, Leilei; Zhang, Hongzhi; Liu, Tao; Zhang, Weixin; Shao, Yuanhu; Ha, Denglong; Li, Yuanqiu; Zhang, Chuangmao; Chen, Xian; Rao, Xingquan; Lin, Yongbiao; Zhou, Lixia; Zhao, Ping; Ye, Qing; Zou, Xiaoming; Fu, Shenglei

doi:10.1016/j.scitotenv.2016.02.100

Cited by 67 publications

(58 citation statements)

References 53 publications

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“…Soil chemical properties such as soil pH, SOM content, and the available and total nutrient concentrations might have an impact on the responses of the soil P fractions to different NPK additions ( Figure 4). As reported by Hou et al [48,49], Sales et al [50], and Shi et al [51], P fractions are greatly influenced by the continuous N additions. P fractions in the soil were mainly affected by the soil chemical properties (total and mineral N, SOM, available P, and total-P), physical properties of soil (soil moisture content, particle size distribution), different microbial activities in the soils, and various agricultural management practices, especially rates of the P fertilizer applied to the soils [52,53].…”

Section: Relationship Of Soil Properties and P Fractions With Npk Addmentioning

confidence: 65%

Long-Term Mineral Fertilization Improved the Grain Yield and Phosphorus Use Efficiency by Changing Soil P Fractions in Ferralic Cambisol

et al. 2019

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Elevated mineral fertilization may change the composition and increase the availability of soil phosphorus (P) in subtropical paddy soils and thus affect long-term plant growth. However, an understanding of the response of soil P fractions to long-term nitrogen, phosphorus and potassium (NPK) additions remains elusive. This study aimed to explore the responses of soil P-fractions and their mobility to different long-term chemical fertilization rates under a double rice cropping system. The rates of nitrogen (N), phosphorus (P), and potassium (K) in the low NPK treatment (LNPK) were 90, 45, and 75 kg ha −1 year −1 , respectively, and in the high NPK treatment (HNPK), they were 180, 90, and 150 kg ha −1 year −1 , respectively. The results showed that the concentrations of soil organic matter (SOM), total P, Olsen P, total N, and mineral N were remarkably increased under HNPK by 17.46%, 162.66%, 721.16%, 104.42%, and 414.46%, respectively, compared with those under control (CT). Compared to the CT P fractions, HNPK increased the labile P fractions (i.e., NaHCO 3 -Pi and NaHCO 3 -Po) by 322.25% and 83.53% and the moderately labile P fractions (i.e., NaOH-Pi, NaOH-Po and HCl. dil. Pi) by 163.54%, 183.78%, and 3167.25% respectively, while the non-labile P was decreased by the HNPK addition. P uptake and grain yield were increased by LNPK and HNPK by 10.02% and 35.20%, respectively, compared with CT. P use efficiency indices were also higher under HNPK than under LNPK. There was a strong positive relationship between grain yield and P use efficiency (R 2 = 0.97). A redundancy analysis (RDA) showed a strong correlation between soil chemical properties and the labile and moderately labile P pools. Structural equation modeling (SEM) revealed that SOM, mineral N, and available P strongly control the labile P pool. In conclusion, NPK additions under the paddy soils significantly influences the soil P fractions. The soil P dynamics Agronomy 2019, 9, 784 2 of 15 and the mechanisms governing the interactions between plants and soil nutrients are clearly explained in this study.

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Section: Relationship Of Soil Properties and P Fractions With Npk Addmentioning

confidence: 65%

Long-Term Mineral Fertilization Improved the Grain Yield and Phosphorus Use Efficiency by Changing Soil P Fractions in Ferralic Cambisol

et al. 2019

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“…Agricultural practices affect soil biodiversity and other microbiological properties (Groom, Gray, & Townsend, 2008). Soil microbial community structure and soil enzymatic activities can be affected by N application and landscape positions (Klaubauf et al, 2010;Shi et al, 2016). Inorganic fertilizers, especially N not only improves crop yields, but its application also directly or indirectly affects soil physical, chemical and biological properties.…”

Section: Introductionmentioning

confidence: 99%

Soil microbial community structure and enzymatic activity responses to nitrogen management and landscape positions in switchgrass (Panicum virgatumL.)

et al. 2019

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Switchgrass (Panicum virgatum L.) is usually grown on marginal land for biofuel system, in which nitrogen (N) is an essential management practice, and landscape position is a key topographical factor in impacting the production. However, limited information is available regarding how the N application and landscape positions affect soil microbial communities and enzyme activities under switchgrass. Thus, the specific objective of this study was to evaluate the responses of N rate (high, 112 kg N/ha; medium, 56 kg N/ha; and low, 0 kg N/ha) and landscape positions (shoulder and footslope) on soil biological health under switchgrass field. Data showed that N addition significantly influenced carbon and N fractions. The hot water‐soluble organic carbon (HWC) and nitrogen (HWN) fractions were significantly higher at footslope position than the shoulder position. The amount of total phospholipid fatty acid (PLFA), total bacterial, actinomycetes, gram‐negative and gram‐positive bacteria, total fungi, arbuscular mycorrhizal (AM) fungi, and saprophytes PLFAs were highest with medium and high N rates and footslope position. The N addition increased total PLFAs in N fertilizer treatments, viz. medium (5,946 ng PLFA‐C/g soil) and high N rates (5,871 ng PLFA‐C/g soil). Microbial biomass carbon and nitrogen and enzyme activities (urease, β‐glucosidase, acid phosphatase and arylsulfatase) were significantly enhanced by N fertilization (medium and high N rates) compared to control (low N rates) under footslope position. The urease activity under medium (36.3 µmol N‐NH4+ g−1 soil hr−1) and high N rates (31.4 µmol N‐NH4+ g−1 soil hr−1) was 42.9% and 23.6% higher than low N rates, respectively. This study suggests that the application of medium N rate in footslope position to switchgrass can enhance the soil biological properties and hence can protect the environment from the excessive use of N fertilizer.

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“…, Tian and Niu , Shi et al. ). Many previous experiments (including field and laboratory) have also identified the major shifts in the microbial community structure under N addition treatments (Ramirez et al.…”

Section: Introductionmentioning

confidence: 99%

Effects of different nitrogen additions on soil microbial communities in different seasons in a boreal forest

Yan

Xing

et al. 2017

Ecosphere

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Abstract. In the global change scenario, nitrogen (N) deposition has the potential to affect the soil microbial communities that play critical roles in ecosystem functioning. Although the impacts of N deposition on soil microbial communities have been reasonably well studied, microorganism responses to the N addition combined with the seasonal change have rarely been reported. This study was conducted to evaluate the effects of different levels of N addition (0, 2.5, 5.0, and 7.5 g NÁm ) on soil microbial communities in different seasons (spring, summer, and autumn) in a boreal forest. Our results showed that the soil physical-chemical properties were found to be changed by N addition and seasonal changes were correlated with microbial community structure. The N addition and seasonal changes significantly affect the diversity and abundance of the microbial community, while their interactions only affect the bacterial abundance and the fungal diversity. In addition, our results also provided clear evidence for specific responses of microorganisms to the different N additions and each season. Our findings suggest that the microbial community response to N deposition could be the seasonal change and will strongly correlate with environmental change.

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Consistent effects of canopy vs. understory nitrogen addition on the soil exchangeable cations and microbial community in two contrasting forests

Cited by 67 publications

References 53 publications

Long-Term Mineral Fertilization Improved the Grain Yield and Phosphorus Use Efficiency by Changing Soil P Fractions in Ferralic Cambisol

Long-Term Mineral Fertilization Improved the Grain Yield and Phosphorus Use Efficiency by Changing Soil P Fractions in Ferralic Cambisol

Soil microbial community structure and enzymatic activity responses to nitrogen management and landscape positions in switchgrass (Panicum virgatumL.)

Effects of different nitrogen additions on soil microbial communities in different seasons in a boreal forest

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