Short-term effects of returning granulated straw on soil microbial community and organic carbon fractions in dryland farming

다국어 초록 (Multilingual Abstract)

We conducted a 2-year field experiment which was comprised of five treatments, namely no straw returning (CK), straw mulching (SM), straw plowed into the soil (SP), and straw returned in granulated form (SG). The aim of this study was to investigate the effects of different straw returning modes on soil bacterial and fungal community structure and their relationships to soil organic carbon (SOC) fractions at three different soil depths (0–20, 20–40, and 40–60 cm) in a dryland under maize cultivation in Northeast (NE) China. SM, SP, and SG treatments significantly increased SOC content.
Compared with SM and SP treatments, SG treatment significantly increased the content of SOC and easily oxidizable carbon (EOC) in the topsoil (0–20 cm depth), and increased dissolved organic carbon (DOC) and SOC content of the light fraction (LFOC) in the 20–40 cm layer. Meanwhile, SG treatment exhibited the highest microbial biomass C (MBC) content in all of the three soil depths. SG treatment also enhanced bacterial richness as well as fungal richness and diversity in the upper 40 cm of soil. In addition, SG treatment increased the relative abundance of Proteobacteria in all depths, and had the highest relative abundance of Basidiomycota in the first 20 cm of soil. SP treatment showed the lowest soil organic carbon content in all fractions and soil microbial community composition. SM treatment exhibited similar results to SG treatment in SOC, DOC, and LFOC contents, and bacterial diversity in the topsoil and subsoil. As a whole, treatment SG improved soil quality and maize yield, hence we recommend returning granulated straw as the most effective practice for enhancing labile SOC fractions as well as maintaining soil diversity and microbial richness of arid farmlands in NE China.

참고문헌 (Reference)

1 IUSS Working Group WRB, "World reference base for soil resources 2014, update 2015 International soil classification system for naming soils and creating legends for soil maps" Food and Agriculture Organization of the United Nations 2015

2 Whalen, J. K., "Transforming plant carbon into soil carbon : processlevel controls on carbon sequestration" 94 : 1065-1073, 2014

3 Osler, G. H. R., "Toward a complete soil C and N cycle : incorporating the soil fauna" 88 : 1611-1621, 2007

4 Choudhury, S. G., "Tillage and residue management effects on soil aggregation, organic carbon dynamics and yield attribute in rice-wheat cropping system under reclaimed sodic soil" 136 : 76-83, 2014

5 Powlson, D. S., "The potential to increase soil carbon stocks through reduced tillage or organic material additions in England and Wales : a case study" 146 : 23-33, 2012

6 Marschner, P., "The microbial community composition changes rapidly in the early stages of decomposition of wheat residue" 43 : 445-451, 2011

7 Stockmann, U., "The knowns, known unknowns and unknowns of sequestration of soil organic carbon" 164 : 80-99, 2013

8 Cookson, W. R., "The contribution of soil organic matter fractions to carbon and nitrogen mineralization and microbial community size and structure" 37 : 1726-1737, 2005

9 Maidak, B. L., "The RDP(ribosomal database project)" 25 : 109-111, 1997

10 Cotrufo, M. F., "The Microbial Efficiency Matrix Stabilization (MEMS)framework integrates plant litter decomposition with soil organic matter stabilization: do labile plant inputs form stable soil organic matter?" 19 : 988-995, 2013

11 Marschner, B., "Temperature effects on release and ecologically relevant properties of dissolved organic carbon in sterilized and biologically active soil samples" 34 : 459-466, 2002

12 Kuramae, E. E., "Structural and functional variation in soil fungal communities associated with litter bags containing maize leaf" 84 : 519-531, 2013

13 Soil Survey Staff, "Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys" Natural Resources Conservation Service 1999

14 Grandy, A. S., "Soil respiration and litter decomposition responses to N fertilization rate in no-till corn systems" 179 : 35-40, 2013

15 Plaza, C., "Soil resources and element stocks in drylands to face global issues" 8 : 13788-, 2018

16 Deb, S., "Soil organic carbon: Towards better soil health, productivity and climate change mitigation" 3 : 26-34, 2015

17 Hu, Y., "Soil organic carbon and soil structure are driving microbial abundance and community composition across the arid and semi-arid grasslands in northern China" 77 : 51-57, 2014

18 Fu, X., "Soil microbial community and carbon and nitrogen fractions responses to mulching under winter wheat" 139 : 64-68, 2019

19 Blair, G. J., "Soil carbon fractions based on their degree of oxidation, and the development of a carbon management index for agricultural systems" 46 : 1459-1466, 1995

20 Koyama, A., "Soil bacterial community composition altered by increased nutrient availability in Arctic tundra soils" 5 : 516-, 2014

21 Yang, C., "Soil aggregates regulate the impact of soil bacterial and fungal communities on soil respiration" 337 : 444-452, 2019

22 Zhao, X. M., "Simulation of accumulation and mineralization(CO2 release)of organic carbon in chernozem under different straw return ways after corn harvesting" 156 : 148-154, 2016

23 Breulmann, M., "Short-term bioavailability of carbon in soil organic matter fractions of different particle sizes and densities in grassland ecosystems" 497 (497): 29-37, 2014

24 Luo, S., "Sensitivity of soil organic carbon stocks and fractions to soil surface mulching in semiarid farmland" 67 : 35-42, 2015

25 Benbi, D. K., "Sensitivity of labile soil organic carbon pools to long-term fertilizer, straw and manure management in rice-wheat system" 25 : 534-545, 2015

26 Voříšková, J., "Seasonal dynamics of fungal communities in a temperate oak forest soil" 201 : 269-278, 2014

27 Jiang, P. K., "Seasonal changes in soil labile organic carbon pools within a Phyllostachys praecox stand under high rate fertilization and winter mulch in subtropical China" 236 : 30-36, 2006

28 Edgar, R. C., "Search and clustering orders of magnitude faster than BLAST" 26 : 2460-2461, 2010

29 Franke-Whittle, I. H., "Rhizosphere bacteria and fungi associated with plant growth in soils of three replanted apple orchards" 395 : 317-333, 2015

30 Navarro-Noya, Y. E., "Relative impacts of tillage, residue management and crop-rotation on soil bacterial communities in a semi-arid agroecosystem" 65 : 86-95, 2013

31 Sun, J., "Pyrosequencing technology reveals the impact of different manure doses on the bacterial community in apple rhizosphere soil" 78 : 28-36, 2014

32 Christensen, B. T., "Physical fractionation of soil and structural and functional complexity in organic matter turnover" 52 : 345-353, 2001

33 Cambardella, C. A., "Particulate soil organicmatter changes across a grassland cultivation sequence" 56 : 777-783, 1992

34 Johansson, J. F., "Microbial interactions in the mycorrhizosphere and their significance for sustainable agriculture" 48 : 1-13, 2004

35 Liu, D., "Microbial functionality as affected by experimental warming of a temperate mountain forest soil–A metaproteomics survey" 117 (117): 196-202, 2017

36 Xue, D., "Microbial biomass, N mineralization and nitrification, enzyme activities, and microbial community diversity in tea orchard soils" 288 : 319-331, 2006

37 Yin, C. T., "Members of soil bacterial communities sensitive to tillage and crop rotation" 42 : 2111-2118, 2010

38 Ren, C., "Linkages of C : N : P stoichiometry and bacterial community in soil following afforestation of former farmand" 376 : 59-66, 2016

39 Haynes, R. J., "Labile organic matter fractions as central components of the quality of agricultural soils : an overview" 85 : 221-268, 2005

40 Poirier, V., "Initial soil organic carbon concentration influences the short-term retention of crop-residue carbon in the fine fraction of a heavy clay soil" 49 : 527-535, 2013

41 Faoro, H., "Influence of soil characteristics on the diversity of bacteria in the Southern Brazilian Atlantic Forest" 76 : 4744-4749, 2010

42 Dong, W., "Influence of film mulching on soil microbial community in a rainfed region of northeastern China" 7 : 8468-, 2017

43 Stevenson, F. J, "Humus Chemistry. Genesis, Composition, Reactions" John Wiley & Sons 1994

44 Schreiter, S., "Effects of the soil type on the microbiome in the rhizosphere of field-grown lettuce" 5 : 144-, 2014

45 Hu, N., "Effects of different straw returning modes on greenhouse gas emissions and crop yields in a rice-wheat rotation system" 223 : 115-122, 2016

46 Liang, Q., "Effects of 15 years of manure and inorganic fertilizers on soil organic carbon fractions in a wheat-maize system in the North China Plain" 92 : 21-33, 2012

47 Giannetta, B., "Distribution and thermal stability of physically and chemically protected organic matter fractions in soils across different ecosystems" 54 : 671-681, 2018

48 Bolan, N. S., "Dissolved organic matter: biogeochemistry, dynamics, and environmental significance in soils" 110 : 1-75, 2011

49 Chantigny, M. H., "Dissolved and water-extractable organic matter in soils : a review on the influence of land use and management practices" 113 : 357-380, 2003

50 Schollenberger, C. J., "Determination of soil organic matter" 59 : 53-56, 1945

51 Plaza, C., "Density-based fractionation of soil organic matter : effects of heavy liquid and heavy fraction washing" 9 : 10146-, 2019

52 Hu, J., "Decomposition characteristics of organic materials and their effects on labile and recalcitrant organic carbon fractions in a semi-arid soil under plastic mulch and drip irrigation" 10 : 115-128, 2018

53 Zaccone, C., "DNA occurrence in organic matter fractions isolated from amended, agricultural soils" 130 : 134-142, 2018

54 Medina, J., "Crop residue stabilization and application to agricultural and degraded soils : A review" 42 : 41-54, 2015

55 Gregorich, E. G., "Chemical and biological characteristics of physically uncompleted organic matter" 70 : 975-985, 2006

56 Ding, X. L., "Changes in soil organic carbon pools after 10 years of continuous manuring combined with chemical fertilizer in a Mollisol in China" 122 : 36-41, 2012

57 Zhao, S. C., "Changes in soil microbial community, enzyme activities and organic matter fractions under long-term straw return in northcentral China" 216 : 82-88, 2016

58 Dong, W., "Changes in soil microbial community composition in response to fertilization of paddy soils in subtropical China" 84 : 140-147, 2014

59 Akhtar, K., "Changes in soil enzymes, soil properties, and maize crop productivity under wheat straw mulching in Guanzhong" 182 : 94-102, 2018

60 Vance, E. D., "An extraction method for measuring soil microbial biomass C" 19 : 703-707, 1987

61 Baldrian, P., "Active and total microbial communities in forest soil are largely different and highly stratified during decomposition" 6 : 248-258, 2012

62 Jones, R. T., "A comprehensive survey of soil acidobacterial diversity using pyrosequencing and clone library analyses" 3 : 442-453, 2009