Soil organic carbon pools and composition in a wetland complex invaded by reed canary grass

Bills, Jonathan S.; Jacinthe, Pierre-André; Tedesco, Lenore P.

doi:10.1007/s00374-010-0476-6

Cited by 13 publications

(9 citation statements)

References 30 publications

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“…The studied riparian areas are relatively unmanaged natural systems supporting woody (WR) and grass (LWD) vegetation. Although biomass production in the riparian areas was not measured, the available data suggest that biomass input must be much greater in these systems than in the croplands (Jackson et al, 1996; Ussiri et al, 2006; Bills et al, 2010). In addition to the total mass, the spatial distribution of that input (shoot versus root) is equally important, considering the strong relationships reported in several studies between root biomass production, soil respiration, an C cycling and storage (Tufekcioglu et al, 2001; Ussiri et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

“…In a compilation of root biomass studies, Jackson et al (1996) noted that 83% of root biomass resides in the top 20 cm soil layer in temperate grassland as opposed to 65% in forest. Data from locations in the midwestern United States showed even a greater stratification, with 84 to 90% of root biomass in the top 20 cm soil layer in grasslands as compared with 37% in forests (Ussiri et al, 2006; Bills et al, 2010). In light of these considerations and with the knowledge that ∼50% of CO 2 emission could originate from root respiration (Hanson et al, 2000), it is not surprising that soil respiration was highest in the grass‐dominated LWD buffer than in any of our other study sites (Table 1).…”

Section: Discussionmentioning

confidence: 99%

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Soil Methane and Carbon Dioxide Fluxes from Cropland and Riparian Buffers in Different Hydrogeomorphic Settings

et al. 2015

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Riparian buffers contribute to the mitigation of nutrient pollution in agricultural landscapes, but there is concern regarding their potential to be hot spots of greenhouse gas production. This study compared soil CO2 and CH4 fluxes in adjacent crop fields and riparian buffers (a flood‐prone forest and a flood‐protected grassland along an incised channel) and examined the impact of water table depth (WTD) and flood events on the variability of gas fluxes in riparian zones. Results showed significantly (P < 0.001) higher CO2 emission in riparian areas than in adjoining croplands (6.8 ± 0.6 vs. 3.6 ± 0.5 Mg CO2–C ha−1 yr−1; mean ± SE). Daily flux of CO2 and soil temperature were significantly related (P < 0.002), with Q10 values ranging between 1.75 and 2.53. Significant relationships (P < 0.05) were found between CH4 daily flux and WTD. Flood events resulted in enhanced CH4 emission (up to +44.5 mg CH4–C m−2 d−1 in a swale) under warm soil conditions (>22°C), but the effect of flooding was less pronounced in early spring (emission <1.06 mg CH4–C m−2 d−1), probably due to low soil temperature. Although CH4 flux direction alternated at all sites, overall the croplands and the flood‐affected riparian forest were CH4 sources, with annual emission averaging +0.04 ± 0.17 and +0.92 ± 1.6 kg CH4–C ha−1, respectively. In the riparian forest, a topographic depression (<8% of the total area) accounted for 78% of the annual CH4 emission, underscoring the significance of landscape heterogeneity on CH4 dynamics in riparian buffers. The nonflooded riparian grassland, however, was a net CH4 sink (−1.08 ± 0.22 kg CH4–C ha−1 yr−1), probably due to the presence of subsurface tile drains and a dredged/incised channel at that study site. Although these hydrological alterations may have contributed to improvement in the CH4 sink strength of the riparian grassland, this must be weighed against the water quality maintenance functions and other ecological services provided by riparian buffers.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Soil Methane and Carbon Dioxide Fluxes from Cropland and Riparian Buffers in Different Hydrogeomorphic Settings

et al. 2015

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“…Zhou et al (2009) reported that S. alterniflora marsh contained the highest content of total S in the sediment when compared with the native Suaeda salsa marsh, P. australis marsh, and mudflat; importantly, plant S storage of S. alterniflora also exceeded that of native species. However, to what extent plant invasions affect soil C, N and S accumulation still remains a widely debated topic (Bills et al, 2010;Wolkovich et al, 2010). How ecosystems respond to plant invasion is variable because of the substantial variety of differing invasive species and diverse native ecosystems (Wang et al, 2006;Zhang et al, 2008;.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Carbon, Nitrogen, and Sulfur in Coastal Wetlands Dominated by Native and Invasive Plants in the Yancheng National Nature Reserve, China

et al. 2020

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The rapid invasion of the plant Spartina alterniflora in coastal wetland areas can threaten the capacity of their soils to store carbon (C), nitrogen (N), and sulfur (S). In this study, we investigated the spatial and temporal distribution patterns of C, N and S of both soil and (native and invasive) plants in four typical coastal wetlands in the core area of the Yancheng National Nature Reserve, China. The results show that the invasive S. alterniflora greatly influenced soil properties and increased soil C, N and S storage capacity: the stock (mean ± standard error) of soil organic carbon (SOC, (3.56 ± 0.36) kg/m 3), total nitrogen (TN, (0.43 ± 0.02) kg/m 3), and total sulfur (TS, (0.69 ± 0.11) kg/m 3) in the S. alterniflora marsh exceeded those in the adjacent bare mudflat, Suaeda salsa marsh, and Phragmites australis marsh. Because of its greater biomass, plant C ((1193.7 ± 133.6) g/m 2), N ((18.8 ± 2.4) g/m 2), and S ((9.4 ± 1.5) g/m 2) storage of S. alterniflora was also larger than those of co-occurring native plants. More biogenic elements circulated in the soil-plant system of the S. alterniflora marsh, and their spatial and temporal distribution patterns were also changed by the S. alterniflora invasion. Soil properties changed by S. alterniflora's invasion thereby indirectly affected the accumulation of soil C, N and S in this wetland ecosystem. The SOC, TN, and TS contents were positively correlated with soil electrical conductivity and moisture, but negatively correlated with the pH and bulk density of soil. Together, these results indicate that S. alterniflora invasion altered ecosystem processes, resulted in changes in net primary production and litter decomposition, and increased the soil C, N and S storage capacity in the invaded ecosystems in comparison to those with native tallgrass communities in the coastal wetlands of East China.

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“…Under Swedish conditions, SOC sequestration is estimated to be around 0.65 t ha −1 yr −1 (of which 0.56 t ha −1 yr −1 is in topsoil and 0.09 t ha −1 yr −1 is in subsoil), when ley is cultivated instead of annual crops, according to a review by Bolinder et al [45]. Cultivation of RCG also increases SOC stocks [49], but no long-term quantification values are reported in the literature for Swedish conditions. However, it is reasonable to assume that the SOC sequestration rate is similar to that of ley.…”

Section: Quantification Of Soc Sequestration Ratesmentioning

confidence: 99%

Profitability of Crop Cultivation in Small Arable Fields When Taking Economic Values of Ecosystem Services into Account

Nilsson

Rosenqvist²

2021

Sustainability

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Small arable fields are beneficial with regard to ecosystem services, e.g., concerning biodiversity. By selecting appropriate crops and cultivation practices, arable fields can also be used as carbon sinks. The objectives of this study were to investigate what impact field conditions (e.g., field size and shape) and payments (subsidies) for environmental benefits have on profitability. A dynamic simulation model was used to simulate machine operations in fields of two different shapes and five different sizes (from 0.75 to 12.00 ha). A wide range of crops cultivated in Sweden were investigated (fallow land and plantation of Norway spruce were also included). A perimeter-based subsidy was suggested in order to conserve and promote biodiversity, and an area- and crop-based subsidy was suggested in order to promote sequestration of soil organic carbon (SOC). The results showed that, without financial support and from a purely economic point of view, most field types investigated should be planted with Norway spruce. With currently available subsidies, e.g., EU Common Agricultural Policy (CAP) direct payments, hybrid aspen, poplar, fallow, and extensive ley cultivation are the most profitable crops. Perimeter-based subsidies favoured the net gain for small fields. As expected, a subsidy for sequestration of SOC favoured cultivation of specific SOC-sequestering crops such as ley, willow, and poplar. Our recommendation for future studies is to investigate a well-balanced combination of perimeter-based support and SOC sequestration support that benefits biodiversity and climate under different cultivation conditions.

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Soil organic carbon pools and composition in a wetland complex invaded by reed canary grass

Cited by 13 publications

References 30 publications

Soil Methane and Carbon Dioxide Fluxes from Cropland and Riparian Buffers in Different Hydrogeomorphic Settings

Soil Methane and Carbon Dioxide Fluxes from Cropland and Riparian Buffers in Different Hydrogeomorphic Settings

Comparison of Carbon, Nitrogen, and Sulfur in Coastal Wetlands Dominated by Native and Invasive Plants in the Yancheng National Nature Reserve, China

Profitability of Crop Cultivation in Small Arable Fields When Taking Economic Values of Ecosystem Services into Account

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