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1Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-11-06Publisher: Institute of Physics (IOP)Print ISSN: 1755-1307Electronic ISSN: 1755-1315Topics: GeographyGeosciencesPhysicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressT. P. Ying, M. X. Wang, X. X. Wu, Z. Y. Zhao, Z. Z. Zhang, B. Q. Song, Y. C. Li, B. Lei, Q. Li, Y. Yu, E. J. Cheng, Z. H. An, Y. Zhang, X. Y. Jia, W. Yang, X. H. Chen, and S. Y. Li
American Physical Society (APS)
Published 2018Staff ViewPublication Date: 2018-11-16Publisher: American Physical Society (APS)Print ISSN: 0031-9007Electronic ISSN: 1079-7114Topics: PhysicsKeywords: Condensed Matter: Electronic Properties, etc.Published by: -
3Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-11-06Publisher: Institute of Physics (IOP)Print ISSN: 1755-1307Electronic ISSN: 1755-1315Topics: GeographyGeosciencesPhysicsPublished by: -
4Latest Papers from Table of Contents or Articles in PressM. X. Wang ; C. Liu ; J. P. Xu ; F. Yang ; L. Miao ; M. Y. Yao ; C. L. Gao ; C. Shen ; X. Ma ; X. Chen ; Z. A. Xu ; Y. Liu ; S. C. Zhang ; D. Qian ; J. F. Jia ; Q. K. Xue
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-03-17Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
5Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-07-12Publisher: Institute of Physics (IOP)Print ISSN: 1757-8981Electronic ISSN: 1757-899XTopics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsPublished by: -
6Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-02-07Publisher: Wiley-BlackwellPrint ISSN: 0148-0227Topics: GeosciencesPhysicsPublished by: -
7Latest Papers from Table of Contents or Articles in PressH. P. Wang, M. X. Li, P. F. Zou, X. Cai, L. Hu, and B. Wei
American Physical Society (APS)
Published 2018Staff ViewPublication Date: 2018-12-13Publisher: American Physical Society (APS)Print ISSN: 1539-3755Electronic ISSN: 1550-2376Topics: PhysicsKeywords: Fluid DynamicsPublished by: -
8Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-12-20Publisher: Institute of Physics (IOP)Print ISSN: 1755-1307Electronic ISSN: 1755-1315Topics: GeographyGeosciencesPhysicsPublished by: -
9Articles: DFG German National LicensesStaff View
ISSN: 0038-1098Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesWinchester, J.W. ; Wang, M.-x. ; Ren, L.-x. ; Lu, W.-x. ; Hansson, H.-C. ; Lannefors, H. ; Darzi, M. ; C.D. Leslie, A.
Amsterdam : ElsevierStaff ViewISSN: 0029-554XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Energy, Environment Protection, Nuclear Power EngineeringPhysicsType of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesWassmann, R. ; Tölg, M. ; Papen, H. ; Rennenberg, H. ; Seiler, W. ; Cheng, D. X. ; Wang, M. X.
Springer
Published 1996Staff ViewISSN: 1432-0789Keywords: Methane emission ; Wetland rice ; Fertilization ; Mitigation of greenhouse gasesSource: Springer Online Journal Archives 1860-2000Topics: BiologyGeosciencesAgriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Abstract The effect of fertilizers on methane emission rates was investigated using an automated closed chamber system in Chinese rice fields (Human Province). Each of three experiments compared two fields treated with a first uniform fertilizer dose and a second fertilizer dose which was different for each of the two fields. The uniform fertilizer doses for both fields in each experiment comprised mineral (experiment 1), organic (experiment 2) and combined mineral plus organic components (experiment 3). In all three experiments the second fertilizer dose comprised organic amendments for field 1 and no organic amendments for field 2. The rate of increase in methane emission with a given amount of organic manure was found to depend on the total amount of organic manure applied. A single dose of organic manure increased the emission rates by factors of 2.7 to 4.1 as compared to fields without organic manure (experiment 1). In rice fields that had already been treated with organic manure, the application of a second dose of organic manure only slightly enhanced the emission rates in experiment 2 by factors of 1.1 to 1.5 and showed no detectable increase in experiment 3. The net reduction achieved by separation of organic and mineral fertilizers was maximized by concentrating the organic amendments in the season with low emission rates, i.e. early rice, and using exclusively mineral fertilizers on late rice when emission rates were generally higher. This distribution pattern, which was not associated with significant yield losses, resulted in an annual methane emission corresponding to only 56% of the methane emitted from fields treated with blended fertilizers.Type of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesWassmann, R. ; Shangguan, X. J. ; Tölg, M. ; Cheng, D. X. ; Wang, M. X. ; Papen, H. ; Rennenberg, H. ; Seiler, W.
Springer
Published 1996Staff ViewISSN: 1432-0789Keywords: Key words Methane emission ; Wetland rice ; Fertilization ; Mitigation of greenhouse gasesSource: Springer Online Journal Archives 1860-2000Topics: BiologyGeosciencesAgriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Abstract The effect of fertilizers +on methane emission rates was investigated using an automated closed chamber system in Chinese rice fields (Hunan Province). Each of three experiments compared two fields treated with a first uniform fertilizer dose and a second fertilizer dose which was different for each of the two fields. The uniform fertilizer doses for both fields in each experiment comprised mineral (experiment 1), organic (experiment 2) and combined mineral plus organic components (experiment 3). In all three experiments the second fertilizer dose comprised organic amendments for field 1 and no organic amendments for field 2. The rate of increase in methane emission with a given amount of organic manure was found to depend on the total amount of organic manure applied. A single dose of organic manure increased the emission rates by factors of 2.7 to 4.1 as compared to fields without organic manure (experiment 1). In rice fields that had already been treated with organic manure, the application of a second dose of organic manure only slightly enhanced the emission rates in experiment 2 by factors of 1.1 to 1.5 and showed no detectable increase in experiment 3. The net reduction achieved by separation of organic and mineral fertilizers was maximized by concentrating the organic amendments in the season with low emission rates, i.e. early rice, and using exclusively mineral fertilizers on late rice when emission rates were generally higher. This distribution pattern, which was not associated with significant yield losses, resulted in an annual methane emission corresponding to only 56% of the methane emitted from fields treated with blended fertilizers.Type of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 0040-4020Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 1434-4483Source: Springer Online Journal Archives 1860-2000Topics: GeosciencesPhysicsNotes: Summary The CH4 emission rates from Chinese rice fields have been measured in five typical areas representing all of the five major rice culture regions in People's Republic of China (P.R. China). Four types of diurnal variations (afternoon peak, night peak, afternoon-night double peaks and random pattern) of CH4 emission rates have been found. The first pattern was normally found in clear weather, the second and the third types were only found occasionally in particular place, while the fourth were found in cloudy or rainy weather. Due to the irregular pattern of the methane production observed in the morning-afternoon comparison experiment, the transport pathway influenced by certain factors, may be the major factor governing the diurnal variation of CH4 emission. Seasonal variation patterns of CH4 emission differ slightly with different field locations, where climate system, cropping system and other factors are different. Two and three emission peaks were generally found during single and early rice vegetation periods, with the peak magnitude and time of appearance differing to small degree in individual sites. A decreasing trend of seasonal variation was always observed in late rice season. A combination of seasonal change of transport efficiency and that of CH4 production rate in the paddy soil explains well the CH4 emission. The role of rice plant in transporting CH4 varied over a large range in different rice growing stages. The reasons for internnual changes of CH4 flux are not yet clear. Great spatial variation of the CH4 emission has been found, which can be attributed to the differences in soil type and soil properties, local climate condition, rice species, fertilizer and water treatment. Experiments showed that while the application of some mineral fertilizers will reduce the CH4 emission and CH4 production in the soil, the application of organic manure will enhance CH4 emission and CH4 production in the soil. Any measures which can get off easily decomposed carbon from organic manure may reduce C supply for CH4 production, and hence reduce CH4 emission. Fermented sludges from biogas generators and farmyard-stored manure seem to be promising. In some parts of China, separate application of the organic and mineral manure instead of mixed application could be another option. Frequent Scientific drainage and ridge cultivation, which are often used water management techniques in Chinese rice agriculture, have been proved in the experiments to be a very efficient mitigation measures to reduce CH4 emission from rice fields. By summarizing the present available data, China's rice fields contribute about 13.3 Tg yr−1 (11.4–15.2) CH4 to the atmosphere. The total methane emission from global rice fields can be estimated 33–60 Tg yr−1, much less than the estimates made before. If we extrapolate the measured data in China with a consideration of measured data in other Asian country, the total global emission of CH4 from rice fields are estimated to be about 35–60 Tg yr−1Type of Medium: Electronic ResourceURL: