Relationships between soil respiration and soil moisture

Cook, F. J.; Orchard, Valerie A.

doi:10.1016/j.soilbio.2007.12.012

Cited by 251 publications

(77 citation statements)

References 30 publications

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“…The lack of a general relationship between bacterial diversity and soil respiration has been documented for other soil types as well (Balser and Firestone, 2005;Wertz et al, 2006). Rather than being related to bacterial diversity, we found that CO 2 production from soil was more strongly predicted by soil moisture and temperature-two well-known regulators of soil metabolism (Cook and Orchard, 2008). Respiration of fungi, soil arthropods and plant roots also respond to these master regulators, making it difficult to disentangle the relative contribution from members of this complex community of organisms, but at the KBS LTER, bacterial diversity is not one of the driving factors.…”

Section: Discussionsupporting

confidence: 39%

Agriculture's impact on microbial diversity and associated fluxes of carbon dioxide and methane

et al. 2011

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Agriculture has marked impacts on the production of carbon dioxide (CO 2 ) and consumption of methane (CH 4 ) by microbial communities in upland soils-Earth's largest biological sink for atmospheric CH 4 . To determine whether the diversity of microbes that catalyze the flux of these greenhouse gases is related to the magnitude and stability of these ecosystem-level processes, we conducted molecular surveys of CH 4 -oxidizing bacteria (methanotrophs) and total bacterial diversity across a range of land uses and measured the in situ flux of CH 4 and CO 2 at a site in the upper United States Midwest. Conversion of native lands to row-crop agriculture led to a sevenfold reduction in CH 4 consumption and a proportionate decrease in methanotroph diversity. Sites with the greatest stability in CH 4 consumption harbored the most methanotroph diversity. In fields abandoned from agriculture, the rate of CH 4 consumption increased with time along with the diversity of methanotrophs. Conversely, estimates of total bacterial diversity in soil were not related to the rate or stability of CO 2 emission. These combined results are consistent with the expectation that microbial diversity is a better predictor of the magnitude and stability of processes catalyzed by organisms with highly specialized metabolisms, like CH 4 oxidation, as compared with processes driven by widely distributed metabolic processes, like CO 2 production in heterotrophs. The data also suggest that managing lands to conserve or restore methanotroph diversity could mitigate the atmospheric concentrations of this potent greenhouse gas.

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Section: Discussionsupporting

confidence: 39%

Agriculture's impact on microbial diversity and associated fluxes of carbon dioxide and methane

et al. 2011

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“…Soil temperatures, however, were similar among the three litter treatments. Soil moisture was higher in the no litter treatment, but soil moisture generally has a positive relationship with R S [5,7], and had little to no relationship with temperature-normalized estimates of R S in our study, so increased soil moisture is not a likely explanation for lower respiration rates in the no litter treatment. If anything, increased soil moisture in the no litter treatment may have compensated in part for reductions in R S associated with the absence of a decomposing forest floor.…”

Section: Forest Floor Contributions To Soil Respirationcontrasting

confidence: 69%

“…Variables such as soil temperature [3,4], soil moisture [2,[5][6][7], litter quality and quantity [4,8], and local stand structure [3,9] exert strong controls over soil respiration in forests. Soil temperature and soil moisture may also covary seasonally, or show varying relationships across sites, leading to confounded effects on soil respiration [10,11].…”

Section: Introductionmentioning

confidence: 99%

Forest Floor and Mineral Soil Respiration Rates in a Northern Minnesota Red Pine Chronosequence

Powers

Kolka

Bradford

et al. 2017

Forests

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Abstract:We measured total soil CO 2 efflux (R S ) and efflux from the forest floor layers (R FF ) in red pine (Pinus resinosa Ait.) stands of different ages to examine relationships between stand age and belowground C cycling. Soil temperature and R S were often lower in a 31-year-old stand (Y31) than in 9-year-old (Y9), 61-year-old (Y61), or 123-year-old (Y123) stands. This pattern was most apparent during warm summer months, but there were no consistent differences in R FF among different-aged stands. R FF represented an average of 4-13% of total soil respiration, and forest floor removal increased moisture content in the mineral soil. We found no evidence of an age effect on the temperature sensitivity of R S , but respiration rates in Y61 and Y123 were less sensitive to low soil moisture than R S in Y9 and Y31. Our results suggest that soil respiration's sensitivity to soil moisture may change more over the course of stand development than its sensitivity to soil temperature in red pine, and that management activities that alter landscape-scale age distributions in red pine forests could have significant impacts on rates of soil CO 2 efflux from this forest type.

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“…This behavior can be verified by comparing treatments: T1 (irrigated without nitrogen), with T6 (not irrigated with 140kg ha -1 of N) that did not differ statistically, probably due to the increased rate of mineralization of soil organic matter in T1, which supplied the demand of N of the plant, resulting in an increase in productivity. Soil moisture has important effects on the mineralization of organic N, since it directly determines the availability of water for the activity and survival of microorganisms, thereby increasing the levels of mineralized nitrogen (COOK &ORCHARD, 2008 andSTUTTER et al, 2013). …”

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confidence: 99%

Ratoon sugarcane yield integrated drip-irrigation and nitrogen fertilization

Uribe

Gava²,

Saad

et al. 2013

Eng. Agríc.

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ABSTRACT:The aim of this study was to compare the use of water and nitrogen on ratoon sugarcane during irrigated and rain-fed conditions, and to assess the production potential of stalks and sugar with different rates of N-fertilizer on the subsurface drip-irrigated management. The experimental design was a randomized block with four replications for each experiment and treatments: (T1) irrigated, 0kg N ha -1 ; (T2) irrigated, 70kg N ha -1 ; (T3) irrigated, 140kg N ha -1 ; (T4) irrigated, 210kg N ha -1 ; (T5) not irrigated, 0kg N ha -1 , and (T6) not irrigated, 140kg N ha -1 . Biometric, technological, dry matter and yield variables were analyzed among the treatments. The irrigation system together with the application of N-fertilizer at 140kg ha -1 presented significant differences in dry matter accumulation of shoots, and for the production of stalks and sugar, respectively 94, 105 and 106%, higher when compared to the not irrigated, without N-fertilizer (T5). There was a positive and synergistic effect of irrigation with N-fertilizer on the productivity of stalks and sugar. Ratoon sugarcane irrigated with subsurface dripping had the highest yield (22Mg ha -1 of sugar) with the dosage of 140kg ha -1 N.

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Relationships between soil respiration and soil moisture

Cited by 251 publications

References 30 publications

Agriculture's impact on microbial diversity and associated fluxes of carbon dioxide and methane

Agriculture's impact on microbial diversity and associated fluxes of carbon dioxide and methane

Forest Floor and Mineral Soil Respiration Rates in a Northern Minnesota Red Pine Chronosequence

Ratoon sugarcane yield integrated drip-irrigation and nitrogen fertilization

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