Flush of Carbon Dioxide Following Rewetting of Dried Soil Relates to Active Organic Pools

Franzluebbers, Alan J.; Haney, Richard L.; Honeycutt, C. Wayne; Schomberg, Harry H.; Hons, Frank M.

doi:10.2136/sssaj2000.642613x

Cited by 316 publications

(236 citation statements)

References 36 publications

Supporting

Mentioning

217

Contrasting

Unclassified

Order By: Relevance

“…1). The fluctuation from wet to dry soil conditions due to precipitation can generally increase C and N mineralization rates for a few days (Franzluebbers et al 2000) by increasing the mineralization of soil organic matter (SOM) (Denef et al 2001a(Denef et al , 2001b and affecting the soil's physical properties, such as aggregation (Mikha et al 2005). When dry soil is wetted, the soil matric potential increases.…”

Section: Discussion N 2 O Co 2 and Nh 3 Emissions Affected By N Depomentioning

confidence: 99%

Combined effects of nitrogen deposition and biochar application on emissions of N₂O, CO₂and NH₃from agricultural and forest soils

Sun

Chen

et al. 2014

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

Both nitrogen (N) deposition and biochar can affect the emissions of nitrous oxide (N 2 O), carbon dioxide (CO 2 ) and ammonia (NH 3 ) from different soils. Here, we have established a simulated wet N deposition experiment to investigate the effects of N deposition and biochar addition on N 2 O and CO 2 emissions and NH 3 volatilization from agricultural and forest soils. Repacked soil columns were subjected to six N deposition events over a 1-year period. N was applied at rates of 0 (N0), 60 (N60), and 120 (N120) kg Nh a −1 yr −1 without or with biochar (0 and 30 t ha). For agricultural soil, adding N increased cumulative N 2 O emissions by 29.8% and 99.1% (p < 0.05) from the N60 and N120 treatments, respectively as compared to without N treatments, and N120 emitted 53.4% more (p < 0.05) N 2 O than the N60 treatment; NH 3 volatilization increased by 33.6% and 91.9% (p < 0.05) from the N60 and N120 treatments, respectively, as compared to without N treatments, and N120 emitted 43.6% more (p < 0.05) NH 3 than N60; cumulative CO 2 emissions were not influenced by N addition. For forest soil, adding N significantly increased cumulative N 2 O emissions by 141.2% (p < 0.05) and 323.0% (p < 0.05) from N60 and N120 treatments, respectively, as compared to without N treatments, and N120 emitted 75.4% more (p < 0.05) N 2 O than N60; NH 3 volatilization increased by 39.0% (p < 0.05) and 56.1% (p < 0.05) from the N60 and N120 treatments, respectively, as compared to without N treatments, and there was no obvious difference between N120 and N60 treatments; cumulative CO 2 emissions were not influenced by N addition. Biochar amendment significantly (p < 0.05) decreased cumulative N 2 O emissions by 20.2% and 25.5% from agricultural and forest soils, respectively, and increased CO 2 emissions slightly by 7.2% and NH 3 volatilization obviously by 21.0% in the agricultural soil, while significantly decreasing CO 2 emissions by 31.5% and NH 3 volatilization by 22.5% in the forest soil. These results suggest that N deposition would strengthen N 2 O and NH 3 emissions and have no effect on CO 2 emissions in both soils, and treatments receiving the higher N rate at N120 emitted obviously more N 2 O and NH 3 than the lower rate at N60. Under the simulated N deposition circumstances, biochar incorporation suppressed N 2 O emissions in both soils, and produced contrasting effects on CO 2 and NH 3 emissions, being enhanced in the agricultural soil while suppressed in the forest soil.

show abstract

Section: Discussion N 2 O Co 2 and Nh 3 Emissions Affected By N Depomentioning

confidence: 99%

Combined effects of nitrogen deposition and biochar application on emissions of N₂O, CO₂and NH₃from agricultural and forest soils

Sun

Chen

et al. 2014

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

show abstract

“…Rains that occur in early wet season after a long dry period firstly penetrate into the soil, coupling with the increasing temperature, greatly promoting bacterial activities in soil, and further resulting in greatly increased CO 2 in soil (Franzluebbers et al, 2000;Ran et al, 2001;Dai et al, 2004;Zhou et al, 2005). Then these increasing CO 2 levels are flushed to the stream via subsequently increased baseflow and interflow, resulting in higher pCO 2 during this period relative to those in the dry season.…”

Section: Seasonal Variations Of Surface Water Pcomentioning

confidence: 99%

Dynamics of CO2 partial pressure and CO2 outgassing in the lower reaches of the Xijiang River, a subtropical monsoon river in China

Yao

Gao

Wang

et al. 2007

Science of The Total Environment

140

117

View full text Add to dashboard Cite

“…Butterly et al, 2010;Franzluebbers et al, 2000), and soil water content before rewetting (e.g. Xu et al, 2004;Chowdhury et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Response of respiration and nutrient availability to drying and rewetting in soil from a semi-arid woodland depends on vegetation patch and a recent wildfire

2015

View full text Add to dashboard Cite

Abstract. Semi-arid woodlands, which are characterised by patchy vegetation interspersed with bare, open areas, are frequently exposed to wildfire. During summer, long dry periods are occasionally interrupted by rainfall events. It is well known that rewetting of dry soil induces a flush of respiration. However, the magnitude of the flush may differ between vegetation patches and open areas because of different organic matter content, which could be further modulated by wildfire. Soils were collected from under trees, under shrubs or in open areas in unburnt and burnt sandy mallee woodland, where part of the woodland experienced a wildfire which destroyed or damaged most of the aboveground plant parts 4 months before sampling. In an incubation experiment, the soils were exposed to two moisture treatments: constantly moist (CM) and drying and rewetting (DRW). In CM, soils were incubated at 80 % of maximum water holding capacity (WHC) for 19 days; in DRW, soils were dried for 4 days, kept dry for another 5 days, then rewetted to 80 % WHC and maintained at this water content until day 19. Soil respiration decreased during drying and was very low in the dry period; rewetting induced a respiration flush. Compared to soil under shrubs and in open areas, cumulative respiration per gram of soil in CM and DRW was greater under trees, but lower when expressed per gram of total organic carbon (TOC). Organic matter content, available P, and microbial biomass C, but not available N, were greater under trees than in open areas. Wild fire decreased the flush of respiration per gram of TOC in the open areas and under shrubs, and reduced TOC and microbial biomass C (MBC) concentrations only under trees, but had little effect on available N and P concentrations. We conclude that the impact of wildfire and DRW events on nutrient cycling differs among vegetation patches of a native semi-arid woodland which is related to organic matter amount and availability.

show abstract

Flush of Carbon Dioxide Following Rewetting of Dried Soil Relates to Active Organic Pools

Cited by 316 publications

References 36 publications

Combined effects of nitrogen deposition and biochar application on emissions of N₂O, CO₂and NH₃from agricultural and forest soils

Combined effects of nitrogen deposition and biochar application on emissions of N₂O, CO₂and NH₃from agricultural and forest soils

Dynamics of CO2 partial pressure and CO2 outgassing in the lower reaches of the Xijiang River, a subtropical monsoon river in China

Response of respiration and nutrient availability to drying and rewetting in soil from a semi-arid woodland depends on vegetation patch and a recent wildfire

Contact Info

Product

Resources

About

Flush of Carbon Dioxide Following Rewetting of Dried Soil Relates to Active Organic Pools

Cited by 316 publications

References 36 publications

Combined effects of nitrogen deposition and biochar application on emissions of N2O, CO2and NH3from agricultural and forest soils

Combined effects of nitrogen deposition and biochar application on emissions of N2O, CO2and NH3from agricultural and forest soils

Dynamics of CO2 partial pressure and CO2 outgassing in the lower reaches of the Xijiang River, a subtropical monsoon river in China

Response of respiration and nutrient availability to drying and rewetting in soil from a semi-arid woodland depends on vegetation patch and a recent wildfire

Contact Info

Product

Resources

About

Combined effects of nitrogen deposition and biochar application on emissions of N₂O, CO₂and NH₃from agricultural and forest soils

Combined effects of nitrogen deposition and biochar application on emissions of N₂O, CO₂and NH₃from agricultural and forest soils