Coupling atmospheric ammonia exchange process over a rice paddy field with a multi-layer atmosphere–soil–vegetation model

2013 ◽  
Vol 180 ◽  
pp. 1-21 ◽  
Author(s):  
Genki Katata ◽  
Kentaro Hayashi ◽  
Kensuke Ono ◽  
Haruyasu Nagai ◽  
Akira Miyata ◽  
...  
Keyword(s):  
Paddy Field ◽  
Exchange Process ◽  
Rice Paddy ◽  
Vegetation Model ◽  
Rice Paddy Field ◽  
Atmospheric Ammonia ◽  
Ammonia Exchange

scholarly journals Four-year monitoring of atmospheric ammonia using passive samplers at a single-crop rice paddy field in central Japan

2013 ◽  
Vol 69 (4) ◽  
pp. 229-241 ◽  
Author(s):  
Kentaro HAYASHI ◽  
Masayoshi MANO ◽  
Keisuke ONO ◽  
Takahiro TAKIMOTO ◽  
Akira MIYATA
Keyword(s):  
Paddy Field ◽  
Rice Paddy ◽  
Passive Samplers ◽  
Central Japan ◽  
Rice Paddy Field ◽  
Atmospheric Ammonia

Functional soil organic matter fractions in response to long-term fertilizer management in a double-cropping paddy field of southern China

2021 ◽  
pp. 1-9
Author(s):  
Haiming Tang ◽  
Chao Li ◽  
Lihong Shi ◽  
Li Wen ◽  
Kaikai Cheng ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Paddy Field ◽  
Southern China ◽  
Rice Paddy ◽  
Chemical Fertilizer ◽  
Protection Mechanism ◽  
Rice Paddy Field ◽  
Double Cropping

Abstract Soil organic matter (SOM) and its fractions play an important role in maintaining or improving soil quality and soil fertility. Therefore, the effects of a 34-year long-term fertilizer regime on six functional SOM fractions under a double-cropping rice paddy field of southern China were studied in the current paper. The field experiment included four different fertilizer treatments: chemical fertilizer alone (MF), rice straw residue and chemical fertilizer (RF), 30% organic manure and 70% chemical fertilizer (OM) and without fertilizer input as control (CK). The results showed that coarse unprotected particulate organic matter (cPOM), biochemically, physically–biochemically and chemically protected silt-sized fractions (NH-dSilt, NH-μSilt and H-dSilt) were the main carbon (C) storage fractions under long-term fertilization conditions, accounting for 16.7–26.5, 31.1–35.6, 16.2–17.3 and 7.5–8.2% of the total soil organic carbon (SOC) content in paddy soil, respectively. Compared with control, OM treatment increased the SOC content in the cPOM, fine unprotected POM fraction, pure physically protected fraction and physico-chemically protected fractions by 58.9, 106.7, 117.6 and 28.3%, respectively. The largest proportion of SOC to total SOC in the different fractions was biochemically protected, followed by chemically and unprotected, and physically protected were the smallest. These results suggested that a physical protection mechanism plays an important role in stabilizing C of paddy soil. In summary, the results showed that higher functional SOM fractions and physical protection mechanism play an important role in SOM cycling in terms of C sequestration under the double-cropping rice paddy field.

Emission, Production, and Oxidation of Methane in a Japanese Rice Paddy Field

2018 ◽  
pp. 231-244 ◽  
Author(s):  
Kazuyuki Yagi ◽  
Katsumi Kumagai ◽  
Haruo Tsuruta ◽  
Katsuyuki Minami
Keyword(s):  
Paddy Field ◽  
Rice Paddy ◽  
Rice Paddy Field ◽  
Oxidation Of Methane

Benthic macroinvertebrate biodiversity improved with irrigation ponds linked to a rice paddy field

2016 ◽  
Vol 46 (1) ◽  
pp. 70-79 ◽  
Author(s):  
Lak Jung Choe ◽  
Kwang Jin Cho ◽  
Min Su Han ◽  
Min Kyeong Kim ◽  
Soon Kun Choi ◽  
...  
Keyword(s):  
Paddy Field ◽  
Rice Paddy ◽  
Benthic Macroinvertebrate ◽  
Rice Paddy Field

Methylogaea oryzae gen. nov., sp. nov., a mesophilic methanotroph isolated from a rice paddy field

2011 ◽  
Vol 61 (11) ◽  
pp. 2568-2572 ◽  
Author(s):  
Estefanía Geymonat ◽  
Lucía Ferrando ◽  
Silvana E. Tarlera
Keyword(s):  
Paddy Field ◽  
Sequence Similarity ◽  
Rice Paddy ◽  
Cellular Fatty Acid ◽  
Comparative Sequence Analysis ◽  
Rrna Gene ◽  
Type I ◽  
Methylococcus Capsulatus ◽  
Rice Paddy Field ◽  
Moderately Thermophilic

A novel methanotroph, designated strain E10T, was isolated from a rice paddy field in Uruguay. Strain E10T grew on methane and methanol as sole carbon and energy sources. Cells were Gram-negative, non-motile, non-pigmented, slightly curved rods showing type I intracytoplasmic membranes arranged in stacks. The strain was neutrophilic and mesophilic; optimum growth occurred at 30–35 °C with no growth above 37 °C. The strain possessed only a particulate methane monooxygenase (pmoA). Phylogenetic analysis based on 16S rRNA gene sequences indicated that the strain was most closely related to the moderately thermophilic strains Methylocaldum szegediense OR2T (91.6 % sequence similarity) and Methylococcus capsulatus Bath (91.5 %). Comparative sequence analysis of pmoA genes also confirmed that strain E10T formed a new lineage among the genera Methylocaldum and Methylococcus with 89 and 84 % derived amino acid sequence identity to Methylococcus capsulatus Bath and Methylocaldum gracile VKM-14LT, respectively. The DNA G+C content was 63.1 mol% and the major cellular fatty acid was C16 : 0 (62.05 %). Thus, strain E10T ( = JCM 16910T  = DSM 23452T) represents the type strain of a novel species within a new genus, for which the name Methylogaea oryzae gen. nov., sp. nov. is proposed.

Inconspicuous restraint of rice seedling growth by root-infecting fungi in soil of a rice paddy field

2003 ◽  
Vol 69 (2) ◽  
pp. 115-119 ◽  
Author(s):  
Hiromitsu Furuya ◽  
Tsutomu Matsumoto ◽  
Shin-ichi Fuji ◽  
Hideki Naito
Keyword(s):  
Seedling Growth ◽  
Paddy Field ◽  
Rice Paddy ◽  
Rice Seedling ◽  
Rice Paddy Field

Sawdust biochar application to rice paddy field: reduced nitrogen loss in floodwater accompanied with increased NH3 volatilization

2018 ◽  
Vol 25 (9) ◽  
pp. 8388-8395 ◽  
Author(s):  
Yanfang Feng ◽  
Haijun Sun ◽  
Lihong Xue ◽  
Yueman Wang ◽  
Linzhang Yang ◽  
...  
Keyword(s):  
Paddy Field ◽  
Nitrogen Loss ◽  
Rice Paddy ◽  
Nh3 Volatilization ◽  
Rice Paddy Field ◽  
Reduced Nitrogen
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