Research on the dissolved organic matter and microbial community diversity of submerged macrophytes decomposed under different temperature
YANG Fei1,2, YAO Jia1,3, ZHANG Yi-min1, ZHU Yue-ming1, KONG Ming1, BA Cui-cui3, TANG Zhi-kai3
1. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China;
2. School of Geographic Science, NanJing Normal University, Nanjing 210097, China;
3. School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China
The characteristics of DOM, the variation of bacteria and fungi in the decomposed process of H. verticillata and P.malaianus were studied under four temperatures (5, 10, 20 and 35℃). The results showed that the remaining biomass of H.verticillata were 59.13%, 43.91%, 32.61% and 29.57%, the remaining biomass of P.malaianus were 69.13%, 51.3%, 30.8% and 29.57%. The concentration of C, N was promoted by rising temperature, and there was no obvious effect on P(P>0.05). Two humic-like components (C1and C2) and one protein-like component C3 were identified in H.verticillata. Three humic-like components (C1, C2 and C3)were identified in P.malaianus. The variation of DO and CDC in the decomposed water were promoted by temperature. During 0~16d, the main bacteria involved in the decomposition of H.verticillata and P.malaianus were Proteobacteria and Bacteroidetes respectively. During 16~68d, the main bacteria involved in the decomposition of H.verticillata and P.malaianus were Phylum Firmicutes and Proteobacte respectively. The temperature had no obvious effect on bacteria community structure, and Ascomycetes was the major fungi during decomposition.
杨飞, 姚佳, 张毅敏, 朱月明, 孔明, 巴翠翠, 汤志凯. 温度对沉水植物腐解释放DOM及微生物群落多样性的影响[J]. 中国环境科学, 2018, 38(10): 3904-3913.
YANG Fei, YAO Jia, ZHANG Yi-min, ZHU Yue-ming, KONG Ming, BA Cui-cui, TANG Zhi-kai. Research on the dissolved organic matter and microbial community diversity of submerged macrophytes decomposed under different temperature. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(10): 3904-3913.
Aiken G R, McKnight D M, Wershaw R L, et al. Humic substances in soil, sediment and water[M]. New York:Wiley-Interscience, 1985.
[6]
Tzortziou M, Neale P J, Osburn C L, et al. Tidal marshes as a source of optically and chemically distinctive colored dissolved organic matter in the Chesapeake Bay[J]. Limnology Oceanography, 2008,53:148-159.
[7]
Zhang Y L, Liu X H, Wang M Z, et al. Compositional differences of chromophoric dissolved organic matter derived from phytoplankton and macrophytes[J]. Organic Geochemistry, 2013,55:22-37.
[8]
Daniel S, Takashi A, Takeshi F, et al. Decomposition of dominant submerged macrophytes:implications for nutrient release in Myall Lake, NSW, Australia[J]. Ecology and Management, 2006,14(5):427-433.
Barik S K, Mishra S, Ayyappan S. Decomposition patterns of unprocessed and processed lingo cellulosicsin a freshwater fish pond[J]. Aquatic Ecology, 2000,34(2):185-204.
[14]
Noah F, Joseph M C, Kendra M. Litter quality and the temperature sensitivity of decomposition[J]. Ecology, 2005,86(2):320-326.
[15]
Takashi A, Le H N. Effects of rhizome age on the decomposition rate of Phragmites australis rhizomes[J]. Hydrobiologia, 2002,485(1-3):205-208.
[16]
Baldock J A, Oades J M, Nelson P N, et al. Assessing the extent of decomposition of nateral organic materials using solid-state 13C NMR spectroscopy[J]. Australian Journal of Soil Research, 1997,35(5):1061-1084.
[17]
Cox L, Celis R, Hermonsin M C, et al. Effect of organic amendments on herbicide sorptionas as related to the nature of the dissolved organic matter[J]. Environmental Science & Technology, 2000,34(21):4600-4605.
Ozalp M, Conner W H, Lockaby B G. Above-ground productivity and litter decomposition in a tidal freshwater forested wetland on Bull Island, SC, USA[J]. Forest Ecology and Management, 2007,245(1-3):31-43.
Song N, Yan Z S, Cai H Y, et al. Effect of temperature on submerged macrophyte litter decomposition within sediments from a large shallow and subtropical freshwater lake[J]. Hydrobiologia, 2013,714:131-144.
[25]
Thullen J S, Nelson S M, Cade B S, et al. Macrophyte decomposition in a surface-flow ammonia-dominated constructed wetland:rates associated with environmental and biotic variables[J]. Ecological Engineering, 2008,32(3):281-290.
[26]
Bornette G, Puijalon S. Response of aquatic plants to abiotic factors:a review[J]. Aquatic Sciences, 2011,73(1):1-14.
[27]
Bosatta E, Gren G. Soil organic matter quality interpreted thermodynamically[J]. Soil Biology and Biochemistry, 1999,31(13):1889-1891.
Leenheer J A, Croue J. Peer reviewed:characterizing aquatic dissolved organic matter[J]. Environmental Science & Technology, 2003,37(1):18A-26A.
[30]
Murphy K R, Ruiz G M, Dunsmuir W T, et al. Optimized parameters for fluorescence-based verfication of ballast water exchange by ships[J]. Environmental Science & Technology, 2006,40(7):2357-2362.
Bridgeman J, Bieroza M, Baker A. The application fluorescence spectroscopy to organic matter characterization in drinking water treatment[J]. Reviews in Environmental Science and Bio-Technology, 2011,10(3):277-290.
[36]
Coble P G. Characterization of marine and terrestrial DOM in seawater using excitation-emission matrix spectroscopy[J]. Marine Chemistry, 1996,51(4):325-346.
Gessner M O, van R G. Water fungi as decomposers in freshwater ecosystems//Bitton G,ed[J]. Encyclopedia of Environmental Microbiology. New York (online edition DOI:10.1002/0471263397. env314). 2003.
[40]
Junpeng R J P, Lu Y H. Succession of bacterial populations during plant residue decomposition in rich field soil[J]. Applied and environmental microbiology, 2009,75(14):4879-4886.