Methane emission from rice fields as affected by land use change

Eusufzai, Moniruzzaman Khan; Tokida, Takeshi; Okada, Masumi; Sugiyama, Shu-ichi; Liu, Guang Cheng; Nakajima, Miyuki; Sameshima, Ryoji

doi:10.1016/j.agee.2010.11.003

Cited by 32 publications

(13 citation statements)

References 47 publications

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“…The coincidence of CH 4 emission and abundance of methanogens is intriguing, albeit CH 4 emission is also influenced by bacterial CH 4 oxidation (Krüger et al ., ; Ma and Lu, ). In contrast to our observations, it was previously suggested that the methanogenic community can recover after periods of upland crop cultivation (Eusufzai et al ., ). However, our observations are consistent with reports of lower numbers of resident and active archaea in drained versus flooded rice fields in Japan (Itoh et al ., ) and with decreasing numbers of methanogens in Chinese fields during a rice–soybean rotation, which never recovered to the level of the control rice fields without rotation (Liu et al ., ).…”

Section: Discussionmentioning

confidence: 91%

Crop rotation of flooded rice with upland maize impacts the resident and active methanogenic microbial community

Breidenbach

Blaser

Klose

et al. 2015

Environmental Microbiology

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Crop rotation of flooded rice with upland crops is a common management scheme allowing the reduction of water consumption along with the reduction of methane emission. The introduction of an upland crop into the paddy rice ecosystem leads to dramatic changes in field conditions (oxygen availability, redox conditions). However, the impact of this practice on the archaeal and bacterial communities has scarcely been studied. Here, we provide a comprehensive study focusing on the crop rotation between flooded rice in the wet season and upland maize (RM) in the dry season in comparison with flooded rice (RR) in both seasons. The composition of the resident and active microbial communities was assessed by 454 pyrosequencing targeting the archaeal and bacterial 16S rRNA gene and 16S rRNA. The archaeal community composition changed dramatically in the rotational fields indicated by a decrease of anaerobic methanogenic lineages and an increase of aerobic Thaumarchaeota. Members of Methanomicrobiales, Methanosarcinaceae, Methanosaetaceae and Methanocellaceae were equally suppressed in the rotational fields indicating influence on both acetoclastic and hydrogenotrophic methanogens. On the contrary, members of soil crenarchaeotic group, mainly Candidatus Nitrososphaera, were higher in the rotational fields, possibly indicating increasing importance of ammonia oxidation during drainage. In contrast, minor effects on the bacterial community were observed. Acidobacteria and Anaeromyxobacter spp. were enriched in the rotational fields, whereas members of anaerobic Chloroflexi and sulfate-reducing members of Deltaproteobacteria were found in higher abundance in the rice fields. Combining quantitative polymerase chain reaction and pyrosequencing data revealed increased ribosomal numbers per cell for methanogenic species during crop rotation. This stress response, however, did not allow the methanogenic community to recover in the rotational fields during re-flooding and rice cultivation. In summary, the analyses showed that crop rotation with upland maize led to dramatic changes in the archaeal community composition whereas the bacterial community was only little affected.

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Section: Discussionmentioning

confidence: 91%

Crop rotation of flooded rice with upland maize impacts the resident and active methanogenic microbial community

Breidenbach

Blaser

Klose

et al. 2015

Environmental Microbiology

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“…Conversely, anaerobic conditions in the paddy plots limited nitrate availability, and anaerobiosis favored denitrification to N 2 (Zou et al 2007), thus leading to the lower N 2 O emissions. However, in newly converted upland orchard, the regeneration of oxidants, in particular re-oxidation of Fe(II), thus contributes to the uptake of CH 4 (Eusufzai et al 2010). Meanwhile, N 2 O emissions were generally higher in optimum soil moisture and N supply as a result of tight coupling between nitrification and denitrification (Snyder et al 2009).…”

Section: Effects Of Land Use Conversion On Soil Ch 4 and N 2 O Fluxesmentioning

confidence: 99%

Effects of land use conversion and fertilization on CH4 and N2O fluxes from typical hilly red soil

Liu

et al. 2016

Environ Sci Pollut Res

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Land use conversion and fertilization have been widely reported to be important managements affecting the exchanges of greenhouse gases between soil and atmosphere. For comprehensive assessment of methane (CH 4 ) and nitrous oxide (N 2 O) fluxes from hilly red soil induced by land use conversion and fertilization, a 14-month continuous field measurement was conducted on the newly converted citrus orchard plots with fertilization (OF) and without fertilization (ONF) and the conventional paddy plots with fertilization (PF) and without fertilization (PNF). Our results showed that land use conversion from paddy to orchard reduced the CH 4 fluxes at the expense of increasing the N 2 O fluxes. Furthermore, fertilization significantly decreased the CH 4 fluxes from paddy soils in the second stage after conversion, but it failed to affect the CH 4 fluxes from orchard soils, whereas fertilizer applied to orchard and paddy increased soil N 2 O emissions by 68 and 113.9 %, respectively. Thus, cumulative CH 4 emissions from the OF were 100 % lower, and N 2 O emissions were 421 % higher than those from the PF. Although cumulative N 2 O emissions were stimulated in the newly converted orchard, the strong reduction of CH 4 led to lower global warming potentials (GWPs) as compared to the paddy. Besides, fertilization in orchard increased GWPs but decreased GWPs of paddy soils. In addition, measurement of soil moisture, temperature, dissolved carbon contents (DOCs), and ammonia (NH 4 + -N) and nitrate (NO 3 − -N) contents indicated a significant variation in soil properties and contributed to variations in soil CH 4 and N 2 O fluxes. Results of this study suggest that land use conversion from paddy to orchard would benefit for reconciling greenhouse gas mitigation and citrus orchard cultivation would be a better agricultural system in the hilly red soils in terms of greenhouse gas emission. Moreover, selected fertilizer rate applied to paddy would lead to lower GWPs of CH 4 and N 2 O. Nevertheless, more field measurements from newly converted orchard are highly needed to gain an insight into national and global accounting of CH 4 and N 2 O emissions.

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“…At least partially, this could explain why rice straw application resulted in high CH4 emissions in CP than RP. Apart from the source of extra electron donor (i.e., rice straw), high CH4 emission from CP was caused by the availability of organic carbon (due to continuous rice cultivation), highly reduced condition (i.e., higher Fe (II) concentration) and abundance of methanogens (Eusufzai et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

“…Such changes are found to have large effects on the CH4 emissions (Kumagai and Konno, 1998;Nishimura et al, 2004). Recently, we demonstrated that the CH4 emission dynamics in continuous-and recently-converted paddy fields differed due to the abundance of electron donor (soil organic matter), microbially reducible Fe (III) content and activity of methanogenic archaea (Eusufzai et al, 2010). Thus, one may postulate that application of rice straw to these fields may serve as an exogenous source of electron donor for Fe (III) reduction and methanogens, which eventually would enhance CH4 emissions.…”

Section: Introductionmentioning

confidence: 99%

Effect of rice straw application on CH4 emission in continuous and recently converted paddy fields

Tokida

Sugiyama

et al. 2011

J. Agric. Meteorol.

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Management of rice straw is of environmental concern because it significantly affects methane (CH4) emissions from rice paddies. To evaluate straw-application effects on paddies those have different cultivation histories, we measured CH4 emissions in continuously cultivated rice paddy (CP) and recently converted paddy (RP) (from soybean cultivation) with rice straw treatments ( S). Further, we hypothesized that changes in i) soil Fe (III) reduction and ii) population dynamics of methanogens were responsible for the different responses of CH4 emissions due to straw application between CP and RP. Methane (CH4) emission from CP S was 2-fold larger than that from RP S, although relative enhancement was higher in later (492 ) than the former (289 ) compared with no straw application. Stoichiometric evaluation revealed that applied rice straw acted as an exogenous source of electron donor for CH4 production, especially in CP. Our results showed that the increase in CH4 emissions by straw application was much greater in continuous than short term paddy.

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Methane emission from rice fields as affected by land use change

Cited by 32 publications

References 47 publications

Crop rotation of flooded rice with upland maize impacts the resident and active methanogenic microbial community

Crop rotation of flooded rice with upland maize impacts the resident and active methanogenic microbial community

Effects of land use conversion and fertilization on CH4 and N2O fluxes from typical hilly red soil

Effect of rice straw application on CH4 emission in continuous and recently converted paddy fields

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