Spatial and seasonal distribution of organic amendments affecting methane emission from Chinese rice fields

Wassmann, R.; Shangguan, X. J.; T�lg, M.; Cheng, D. X.; Wang, M. X.; Papen, H.; Rennenberg, Heinz; Seiler, W.

doi:10.1007/s003740050097

Cited by 10 publications

(13 citation statements)

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“… g 1, Yan et al [2000]; 2, Chen et al [1995]; 3, Chen et al [1993]; 4, Yao and Chen [1994]; 5, Li et al [1997]; 6, Wang et al [2000]; 7, Shao and Li [1996]; 8, Tao [1993]; 9, Cai et al [2000]; 10, Zhen et al [1997]; 11, Lin et al [2000]; 12, Khalil et al [1998]; 13, Cao and Hong [1996]; 14, Lu et al [2000]; 15, Duan et al [1999]; 16, Wassmann et al [1993b]; 17, Wassmann et al [1996]; 18, Tao [1998]. …”

Section: Estimation Of Ch4 Emissionmentioning

confidence: 99%

Methane emission from rice fields in mainland China: Amount and seasonal and spatial distribution

Yan¹

2003

J. Geophys. Res.

118

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[1] China is the largest rice producer in the world. Methane (CH 4 ) emission from its rice fields has been widely measured since the late 1980s. This study collected the results of available field research, totaling 204 season-treatment measurements conducted on 23 sites. Analysis of these data shows that input of organic material, such as green manure, animal waste, and crop straw, increases CH 4 emission by a factor of 2. Average CH 4 flux from intermittently irrigated rice fields is 53% of that from continuously flooded rice fields; and average CH 4 emission flux from late rice fields is 1.6 and 2.3 times greater than flux from early and single rice fields, respectively. There are regional differences in emission factors and a trend of decreasing emission from south to north. On the basis of earlier estimates of CH 4 emission from Chinese rice fields, and recent reports on the use of crop residue and green manure, it is presumed that half of the rice fields in China receive organic input. From the frequency of various water management events indicated in the surveyed field experiments, as well as from specific statements in individual reports, it is presumed that 2/3 of irrigated rice fields have been intermittently flooded. On the basis of these assumptions, the region-specific emission factors, and 1995 data on rice cultivation area, CH 4 emission from growing-season rice fields in Mainland China was estimated to be 7.67 Tg yr À1 , ranging from 5.82 to 9.57 Tg yr À1 , due to uncertainties in the areas receiving organic inputs, and intermittent irrigation. Generalized seasonal flux patterns were developed for early, late, and single rice. Monthly distributions of emission were estimated from these patterns and rice calendars. The highest emission rate occurred in August. Spatially, emission hot spots included the plains of Dongting Lake in Hunan Province, Boyang Lake in Jiangxi Province, the delta region of Qiantang River in Zhejiang Province, and the Sichuan Basin. Nearly 90% of all Mainland China CH 4 emission occurred between 23°N and 33°N.

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Section: Estimation Of Ch4 Emissionmentioning

confidence: 99%

Methane emission from rice fields in mainland China: Amount and seasonal and spatial distribution

Yan¹

2003

J. Geophys. Res.

118

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“…, 1997). Wassmann et al. (1996) demonstrate that organic amendments to a field with a high soil carbon content did not result in significant differences in CH 4 emissions.…”

Section: Discussionmentioning

confidence: 70%

Mitigating methane emissions from irrigated paddy fields by application of aerobically composted livestock manures in eastern China

Chen

Lin

Wang

et al. 2010

Soil Use and Management

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Livestock manure heaps and wetland rice fields are major sources of CH 4 emissions. A field experiment with an associated composting study were undertaken to investigate CH 4 emissions during manure composting and subsequent land application on paddy. Over a 24-day period in the composting experiment, CH 4 emissions from stored manure was 17 times higher than that from composting manure, indicating that composting as an aerobic process was effective in mitigating CH 4 emissions compared with manure storage, which is normally under an anaerobic environment. Stored and composted manures were subsequently applied as organic fertilizers in the field experiment. Compared with the non-fertilized control treatment, stored and composted manures increased grain yields by 30% and 21%, respectively. During the full rice-growing season, the cumulative CH 4 emission was 15.8 g CH 4 ⁄ m 2 with the application of composted manure, only one-third of that from stored manure. CH 4 emission per unit of grain yield was significantly decreased by composted manure, with a reduction of 56% from the control and 73% from stored manure. The results indicate that composted livestock manure in rice cultivation is a triple-win option through sustaining rice yield, mitigating CH 4 emissions and re-utilizing livestock waste.

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“…Comparison of DLEM‐estimated CH 4 emissions from rice field with observed data at 31 sites Note : n = 31, Modeled = 0.9021 * Observed, R 2 = 0.9545, p < 0.0001 (More detailed information could be found in Table S1). There are six sites in India [ Adhya et al , ; Bharati et al , ; Debnath et al , ; Ghosh et al , ; Gupta et al , ; Pathak et al , ; Satpathy et al , ; Singh et al , ], 14 sites in China [ Cai et al , ; Chen et al , ; Lin et al , ; Tao , ; Wang et al , 2000a; Wassmann et al , ; Wassmann et al , ; Xu et al , ], six sites in Japan [ Goto et al , ; Inubushi et al ., ; Kumagai et al , ; Matsumoto et al , ; Yagi and Minami , ; Yagi et al , ], three sites in Indonesia [ Setyanto et al , ; Subadiyasa et al , ], and two sites in Thailand [ Chareonsilp et al , ; Jermsawatdipong et al , ].…”

Section: Methodsmentioning

confidence: 99%

“…Table S1). There are six sites in India Bharati et al, 2000;Debnath et al, 1996;Ghosh et al, 2003;Gupta et al, 1994;Pathak et al, 2003;Satpathy et al, 1998;Singh et al, 1996], 14 sites in China [Cai et al, 2000;Chen et al, 1995;Lin et al, 2000;Tao, 1998;Wang et al, 2000a;Wassmann et al, 1996;Wassmann et al, 1993;Xu et al, 2004], six sites in Japan [Goto et al, 2004;Inubushi et al, 2003;Kumagai et al, 2000;Matsumoto et al, 2002;Yagi and Minami, 1990;Yagi et al, 1996], three sites in Indonesia [Setyanto et al, 2000;Subadiyasa et al, 1997], and two sites in Thailand [Chareonsilp et al, 2000;Jermsawatdipong et al, 1994]. Global Biogeochemical Cycles 10.1002/2016GB005381…”

Section: Model Evaluation Against Field Observations At Site Levelmentioning

confidence: 99%

Methane emissions from global rice fields: Magnitude, spatiotemporal patterns, and environmental controls

Zhang

Tian

Ren

et al. 2016

Global Biogeochemical Cycles

108

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Given the importance of the potential positive feedback between methane (CH4) emissions and climate change, it is critical to accurately estimate the magnitude and spatiotemporal patterns of CH4 emissions from global rice fields and better understand the underlying determinants governing the emissions. Here we used a coupled biogeochemical model in combination with satellite‐derived contemporary inundation area to quantify the magnitude and spatiotemporal variation of CH4 emissions from global rice fields and attribute the environmental controls of CH4 emissions during 1901–2010. Our study estimated that CH4 emissions from global rice fields varied from 18.3 ± 0.1 Tg CH4/yr (Avg. ±1 SD) under intermittent irrigation to 38.8 ± 1.0 Tg CH4/yr under continuous flooding in the 2000s, indicating that the magnitude of CH4 emissions from global rice fields is largely dependent on different water schemes. Over the past 110 years, our simulated results showed that global CH4 emissions from rice cultivation increased by 85%. The expansion of rice fields was the dominant factor for the increasing trends of CH4 emissions, followed by elevated CO2 concentration, and nitrogen fertilizer use. On the contrary, climate variability had reduced the cumulative CH4 emissions for most of the years over the study period. Our results imply that CH4 emissions from global rice fields could be reduced through optimizing irrigation practices. Therefore, the future magnitude of CH4 emissions from rice fields will be determined by the human demand for rice production as well as the implementation of optimized water management practices.

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Spatial and seasonal distribution of organic amendments affecting methane emission from Chinese rice fields

Cited by 10 publications

References 0 publications

Methane emission from rice fields in mainland China: Amount and seasonal and spatial distribution

Methane emission from rice fields in mainland China: Amount and seasonal and spatial distribution

Mitigating methane emissions from irrigated paddy fields by application of aerobically composted livestock manures in eastern China

Methane emissions from global rice fields: Magnitude, spatiotemporal patterns, and environmental controls

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