Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

/ C. T. Atere [et al.] // Biol. Fertil. Soils. - 2017. - Vol. 53, Is. 4. - P407-417, DOI 10.1007/s00374-017-1190-4. - Cited References:66. - This study was financially supported by the National Natural Science Foundation of China (41671292; 41371304), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB15020401), the Royal Society Newton Advanced Fellowship (NA150182), and the Recruitment Program of High-end Foreign Experts of the State Administration of Foreign Experts Affairs, awarded to Prof. Georg Guggenberger (GDT20164300013), Public Service Technology Center, Institute of Subtropical Agriculture, Chinese Academy of Sciences. Also, Mr. Cornelius T. Atere acknowledges the PhD training grant from the Nigerian Tertiary Education Trust Fund through the Obafemi Awolowo University, Ile-Ife, Nigeria. . - ISSN 0178-2762. - ISSN 1432-0789РУБ Soil Science

Аннотация: This study aimed to better understand the stabilisation of rice rhizodeposition in paddy soil under the interactive effects of different N fertilisation and water regimes. We continuously labelled rice ('Zhongzao 39') with (CO2)-C-13 under a combination of different water regimes (alternating flooding-drying vs. continuous flooding) and N addition (250 mg N kg(-1) urea vs. no addition) and then followed C-13 incorporation into plant parts as well as soil fractions. N addition increased rice shoot biomass, rhizodeposition, and formation of C-13 (new plant-derived C) in the rhizosphere soils under both water regimes. By day 22, the interaction of alternating flooding-drying and N fertilisation significantly increased shoot and root C-13 allocations by 17 and 22%, respectively, over the continuous flooding condition. The interaction effect also led to a 46% higher C-13 allocation to the rhizosphere soil. Alone, alternating water management increased C-13 deposition by 43%. In contrast, N addition increased C-13 deposition in rhizosphere soil macroaggregates under both water regimes, but did not foster macroaggregation itself. N treatment also increased C-13 deposition and percentage in microaggregates and in the silt and clay-size fractions of the rhizosphere soil, a pattern that was higher under the alternating condition. Overall, our data indicated that combined N application and a flooding-drying treatment stabilised rhizodeposited C in soil more effectively than other tested conditions. Thus, they are desirable practices for improving rice cropping, capable of reducing cost, increasing water use efficiency, and raising C sequestration.

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Держатели документа:
Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.
Chinese Acad Sci, Inst Subtrop Agr, Changsha Res Stn Agr & Environm Monitoring, Changsha 410125, Hunan, Peoples R China.
Bangor Univ, Sch Environm Nat Resources & Geog, Bangor LL57 2UW, Gwynedd, Wales.
Leibniz Univ Hannover, Inst Soil Sci, D-30419 Hannover, Germany.
SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Atere, Cornelius Talade; Ge, Tida; Zhu, Zhenke; Tong, Chengli; Jones, Davey L.; Shibistova, Olga; Guggenberger, Georg; Wu, Jinshui; National Natural Science Foundation of China [41671292, 41371304]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB15020401]; Royal Society Newton Advanced Fellowship [NA150182]; Recruitment Program of High-end Foreign Experts of the State Administration of Foreign Experts Affairs [GDT20164300013]; Public Service Technology Center, Institute of Subtropical Agriculture, Chinese Academy of Sciences; Nigerian Tertiary Education Trust Fund through the Obafemi Awolowo University, Ile-Ife, Nigeria

/ Y. Liu [et al.] // Geoderma. - 2019. - Vol. 338. - P30-39, DOI 10.1016/j.geoderma.2018.11.040 . - ISSN 0016-7061
Аннотация: Rhizodeposition represents a readily available C and energy source for soil microorganisms, that plays an important role in the regulation of C and nutrient cycling in ecosystems and exerts a strong influence on C sequestration. The dynamics of rice rhizo-C in soils and its allocation to microorganisms during rice growth, as well as the effects of nitrogen (N-NH4 +) fertilization are poorly understood, particularly with respect to the initial uptake of rhizo-C by microorganisms and its utilization during the entire growth period. To assess these two processes, rice plants were grown in pots with or without N fertilization (0 and 225 kg N-NH4 + ha?1), and 13C incorporation into microbial groups was traced by phospholipid fatty acids (PLFAs) analysis within 6 h after 13CO2 pulse labeling. Labeling was performed at five growth stages: tillering, elongation, heading, filling, and maturation. 13C incorporated into soil microbial biomass C changed rapidly at the beginning of the study period, before elongation, but remained stable thereafter. 13C incorporation into rhizosphere and bulk soil microbial biomass was higher with than without N addition. This stimulation was likely due to the excessive increase in phytomass formation and root exudates after N fertilization and the increased assimilate C input into the soil. Structural equation modelling suggested that N fertilization strongly affected carbon transfer between rhizosphere and non-rhizosphere. Hence, N-NH4 + application may not only increase rhizo-C flow into microorganisms but it may also increase the effect of rhizosphere on bulk-soil microorganisms and subsequent processes related to soil C-cycling. © 2018 Elsevier B.V.

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Держатели документа:
Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture and National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Land and Environment, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
Key Laboratory of Agro-ecological Processes in Subtropical Region and Changsha Research Station for Agricultural and Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of SciencesHunan 410125, China
Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, QLD 4072, Australia
VN Sukachev Institute of Forest, SB-RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Soil Science, Leibniz Universitat Hannover, Hannover, 30419, Germany
Department of Agricultural Soil Science, University of Goettingen, Goettingen, Germany

Доп.точки доступа:
Liu, Y.; Ge, T.; Ye, J.; Liu, S.; Shibistova, O.; Wang, P.; Wang, J.; Li, Y.; Guggenberger, G.; Kuzyakov, Y.; Wu, J.

/ C. T. Atere [et al.] // Plant Soil. - 2018, DOI 10.1007/s11104-018-03905-x . - Article in Press. - ISSN 0032-079X
Аннотация: Background and aims: Water and nutrient management influences the allocation and stabilisation of newly assimilated carbon (C) in paddy soils. This study aimed to determine the belowground allocation of C assimilated by rice and the subsequent C stabilisation in soil aggregates and as mineral-organic associates depending on combined alternate wetting and drying (AWD) versus continuous flooding (CF) and P fertilisation. Methods: We continuously labelled rice plants in 13CO2 atmosphere under AWD versus CF water management, and at two P fertilisation levels (0 or 80 mg P kg?1 soil). The 13C allocation to soil and its incorporation into the wet-sieved aggregate size classes and density fractions of the rhizosphere and bulk soils were analysed 6, 14, and 22 days after the labelling was started (D6, D14, and D22, respectively). Results: Under both water regimes and P fertilisation levels, the proportion of photoassimilates was the highest in the silt- and clay-size aggregate classes and in the mineral-associated fraction. On D6 and D14, P fertilization resulted in smaller 13C incorporation into soil, independent of water management. In the rhizosphere soil, at D22, P fertilisation increased 13C incorporation over no P amendment in macroaggregates (>250 ?m) by 32% (AWD) and 42% (CF), in microaggregates (250–53 ?m) by 97% (CF), and in the silt + clay size class (<53 ?m) by 83% (CF). Further, P fertilisation led to larger 13C incorporation into the rhizosphere soil light fraction (75% at AWD and 90% at CF) and dense fraction (38% and 45%, respectively), and into the bulk soil macroaggregates (71% and 78%, respectively). Conclusions: Phosphorus fertilisation increased the contents of recent photoassimilates in soil aggregate classes with longer residence time as well as of the particulate organic matter with the continuation of plant growth. This positive response of the stabilisation of recent plant photosynthates in soil to P fertilisation can increase the potential of paddy soil for C sequestration. This potential is not limited by the introduction of alternate wetting and drying water-saving technique. © 2018, Springer Nature Switzerland AG.

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Держатели документа:
Key Laboratory of Agro-ecological Processes in Subtropical Region & Changsha Research Station for Agricultural and Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan Province 410125, China
University of Chinese Academy of Sciences, Beijing, 100049, China
Department of Soil Science and Land Resources Management, Faculty of Agriculture, Obafemi Awolowo University, Ile-Ife, 220005, Nigeria
Institute of Soil Science, Leibniz Universitat Hannover, Hannover, 30419, Germany
VN Sukachev Institute of Forest, SB-RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Atere, C. T.; Ge, T.; Zhu, Z.; Liu, S.; Huang, X.; Shibsitova, O.; Guggenberger, G.; Wu, J.

/ C. T. Atere, T. D. Ge, Z. K. Zhu [et al.] // Plant Soil. - 2019. - Vol. 445, Is. 1-2. - P153-167, DOI 10.1007/s11104-018-03905-x. - Cited References:91. - This study was financially supported by the National key research and development program (2016YFE0101100), the Australia-China Joint Research Centre Healthy Soils for Sustainable Food Production and Environmental Quality (ACSRF48165); the National Natural Science Foundation of China (41671292; 41522107); the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB15020401); the Youth Innovation Team Project of ISA, CAS (2017QNCXTD_GTD); the Chinese Academy of Sciences President's International Fellowship Initiative to Georg Guggenberger (2018VCA0031); and Public Service Technology Centre, Institute of Subtropical Agriculture, Chinese Academy of Sciences. Dr. Cornelius T. Atere acknowledges the PhD training grant from the Nigerian Tertiary Education Trust Fund through the Obafemi Awolowo University, Ile-Ife, Nigeria. . - ISSN 0032-079X. - ISSN 1573-5036РУБ Agronomy + Plant Sciences + Soil Science

Аннотация: Background and aims Water and nutrient management influences the allocation and stabilisation of newly assimilated carbon (C) in paddy soils. This study aimed to determine the belowground allocation of C assimilated by rice and the subsequent C stabilisation in soil aggregates and as mineral-organic associates depending on combined alternate wetting and drying (AWD) versus continuous flooding (CF) and P fertilisation. Methods We continuously labelled rice plants in (CO2)-C-13 atmosphere under AWD versus CF water management, and at two P fertilisation levels (0 or 80 mg P kg(-1) soil). The C-13 allocation to soil and its incorporation into the wet-sieved aggregate size classes and density fractions of the rhizosphere and bulk soils were analysed 6, 14, and 22 days after the labelling was started (D6, D14, and D22, respectively). Results Under both water regimes and P fertilisation levels, the proportion of photoassimilates was the highest in the silt- and clay-size aggregate classes and in the mineral-associated fraction. On D6 and D14, P fertilization resulted in smaller 13C incorporation into soil, independent of water management. In the rhizosphere soil, at D22, P fertilisation increased 13C incorporation over no P amendment in macroaggregates (>250 mu m) by 32% (AWD) and 42% (CF), in microaggregates (250-53 mu m) by 97% (CF), and in the silt + clay size class (<53 mu m) by 83% (CF). Further, P fertilisation led to larger C-13 incorporation into the rhizosphere soil light fraction (75% at AWD and 90% at CF) and dense fraction (38% and 45%, respectively), and into the bulk soil macroaggregates (71% and 78%, respectively). Conclusions Phosphorus fertilisation increased the contents of recent photoassimilates in soil aggregate classes with longer residence time as well as of the particulate organic matter with the continuation of plant growth. This positive response of the stabilisation of recent plant photosynthates in soil to P fertilisation can increase the potential of paddy soil for C sequestration. This potential is not limited by the introduction of alternate wetting and drying water-saving technique.

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Держатели документа:
Chinese Acad Sci, Key Lab Agroecol Proc Subtrop Reg, Inst Subtrop Agr, Changsha 410125, Hunan, Peoples R China.
Chinese Acad Sci, Changsha Res Stn Agr & Environm Monitoring, Inst Subtrop Agr, Changsha 410125, Hunan, Peoples R China.
Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
Obafemi Awolowo Univ, Fac Agr, Dept Soil Sci & Land Resources Management, Ife 220005, Nigeria.
Leibniz Univ Hannover, Inst Soil Sci, D-30419 Hannover, Germany.
RAS, SB, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Atere, Cornelius Talade; Ge, Tida; Zhu, Zhenke; Liu, Shoulong; Huang, Xizhi; Shibsitova, Olga; Guggenberger, Georg; Wu, Jinshui; National key research and development program [2016YFE0101100]; Australia-China Joint Research Centre Healthy Soils for Sustainable Food Production and Environmental Quality [ACSRF48165]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41671292, 41522107]; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDB15020401]; Youth Innovation Team Project of ISA, CAS [2017QNCXTD_GTD]; Chinese Academy of Sciences President's International Fellowship Initiative [2018VCA0031]; Public Service Technology Centre, Institute of Subtropical Agriculture, Chinese Academy of Sciences; Nigerian Tertiary Education Trust Fund through the Obafemi Awolowo University, Ile-Ife, Nigeria