Biogeochemical nature of grassland soil organic matter under plant communities with two nitrogen sources

Creme, Alexandra; Chabbi, Abad; Gastal, François; Rumpel, Cornélia

doi:10.1007/s11104-016-3158-9

Cited by 13 publications

(4 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Perennial plants such as turfgrasses can retain significantly more N in soils via litter as well as returning grass clippings to soils compared with removing the clippings after mowing (Law et al, 2017; Pérez‐Suárez et al, 2014). The higher total N in TF and KB compared with BG systems was probably due to their higher biomass production (Creme et al, 2017). In comparison, row crop systems had significantly lower total N due to grain removal (Drinkwater and Snapp, 2007).…”

Section: Resultsmentioning

confidence: 99%

Soil Carbon Accumulation and Nutrient Availability in Managed and Unmanaged Ecosystems of East Tennessee

Singh¹,

Sorochan²,

Stier³

et al. 2019

Soil Science Soc of Amer J

View full text Add to dashboard Cite

Native woodlot and grassland systems have been converted to a managed turfgrass system with urbanization. Turfgrass systems increased carbon sequestration and nitrogen availability compared with row crop systems. Cool‐season (C3) turfgrasses improved soil physical and chemical properties more than warm‐season (C4) grasses. In the last two decades, urban and suburban lands grew by 34% in the United States, with 16 to 20 million ha maintained under turfgrass systems. Side‐by‐side comparison of turfgrass systems with other managed and unmanaged ecosystems have not been comprehensively conducted in the climate transition zone of the United States, despite the environmental significance of land use changes. Our objective was to determine the relative effects of C3 and C4 turfgrasses on soil organic carbon (SOC) accumulation and nutrient availability, in comparison with managed row crop and unmanaged woodlot and grassland systems. Soil samples from depths of 0 to 5, 5 to 15, and 15 to 30 cm were collected during March 2017 at the University of Tennessee's East Tennessee Research and Education Center from seven ecosystems: (i) corn (Zea mays L.)–soybean (Glycine max L.) rotation, (ii) continuous soybean, (iii) tall fescue (Festuca arundinacea L.), (iv) Kentucky bluegrass (Poa pratensis L.), (v) bermudagrass (Cynodon dactylon L.), (vi) unmanaged grassland, and (vii) unmanaged woodlot. All turfgrass species were established in 2012 and were managed like low‐input residential lawns. Within the 30‐cm soil profile, turfgrass systems contained 4.2 kg m−2 SOC at the time of sampling, which was 33% more than croplands and 34% less than unmanaged systems, and the C4 turfgrass system contained 2.3 kg m−2 SOC and 0.4 mg kg−1 inorganic N, which were 56 and 57% lower than C3 systems, respectively. Results from this study highlight that low‐input lawns with suitable grass species can offer higher SOC stock and nutrient availability than conventional cropland systems.

show abstract

Section: Resultsmentioning

confidence: 99%

Soil Carbon Accumulation and Nutrient Availability in Managed and Unmanaged Ecosystems of East Tennessee

Singh¹,

Sorochan²,

Stier³

et al. 2019

Soil Science Soc of Amer J

View full text Add to dashboard Cite

show abstract

“…Mixed plantation litter provided more substrate nutrient inputs and then increased the abundance of key modules, increasing the N metabolism (He et al, 2023). In addition, lignin was the most limiting factor in influencing the abundance of N metabolism in key microbes, including Cyanobacteria, Acidobacteria, Actinobacteria, and Firmicutes, indicating that the content of lignin influenced the changes in N metabolism in key microbes (Crème et al, 2017). This result further confirmed that mixed litter decreased lignin content, increased the key microbial activities of N fixation, and improved the N fixation process.…”

Section: Discussionmentioning

confidence: 99%

Mixed plantation forest litter improves microbial nitrogen transformation by increasing nitrogen metabolism related genes and key bacterial taxa in northern China

Wu,

Yin,

Liu

et al. 2024

Land Degrad Dev

View full text Add to dashboard Cite

Nitrogen (N) metabolism is a key metabolic pathway of nutrient cycling in forest ecosystems. However, the mechanisms by which mixed plantation forest litter improves microbial N transformation are poorly understood. Thus, we investigated the N characteristics, N metabolism‐related genes, and key microbial modules of litter and soil in three types of forests: coniferous (CP forest), broadleaf (BP forest), and mixed forests (MCBP forest). Results indicated that the total N (TN), total hydrolysable organic N (THON), and percentage values of NH4+‐N/TN and NO3−‐N/TN in BP forest and MCBP forest litter were higher than those of CP forest litter, which was attributed to the increase in abundance of N fixation genes and dissimilatory nitrate reduction genes. The MCBP forest increased the bacterial number and diversity, and the abundance of key bacterial taxa. Bacterial key modules 1 and 2 were identified, consisting of Acidobacteria, Actinobacteria, Chloroflexi, Nitrospirae, Proteobacteria, and Gemmatimonadetes, while archaeal module 5 was also a key module, comprising Thaumarchaeota and Euryarchaeota. Nutrients were the limiting factor of key microbial modules in the decomposition of litter, further influencing N metabolism‐related genes and enzymes. Therefore, mixed plantation forests increased microbial N fixation and transformation during litter decomposition in northern China.

show abstract

“…Relying on biological N fixation (BNF) with incorporation of legume species in temporary grasslands may require additional mineral P fertilizer inputs, as P availability is known to limit the development and growth of many legume species (Graham and Vance, 2003). The high demand of legume species for soil P may be attenuated when grown in a mixture with gramineous plants, depending on the species , partly because various grass-legume combinations can influence the biogeochemical composition of soil organic matter (Crème et al, 2017). Therefore in grass-legume mixtures, optimization of P fertilization to maximize N inputs may not be so straightforward but requires site-specific strategies (Mendoza et al, 2016;Stiles et al, 2017).…”

Section: Grassland Management Options: Species Choice Fertilization A...mentioning

confidence: 99%

Managing grasslands to optimize soil carbon sequestration

Chabbi¹,

Rumpel²,

Klumpp³

et al. 2022

Understanding and Fostering Soil Carbon Sequestration

View full text Add to dashboard Cite

In this chapter, we will discuss the effect of different grassland management practices on greenhouse gas (GHG) emissions and soil organic carbon (SOC) sequestration. This includes comparison of grasslands with arable croplands, the role of N fertilization, and grazing strategies. Special emphasis will be given to grasslands in rotation with cropping systems and integration with timber systems to improve sustainable management and SOC sequestration.

show abstract

Biogeochemical nature of grassland soil organic matter under plant communities with two nitrogen sources

Cited by 13 publications

References 49 publications

Soil Carbon Accumulation and Nutrient Availability in Managed and Unmanaged Ecosystems of East Tennessee

Soil Carbon Accumulation and Nutrient Availability in Managed and Unmanaged Ecosystems of East Tennessee

Mixed plantation forest litter improves microbial nitrogen transformation by increasing nitrogen metabolism related genes and key bacterial taxa in northern China

Managing grasslands to optimize soil carbon sequestration

Contact Info

Product

Resources

About