温度对沉水植物腐解释放DOM及微生物群落多样性的影响

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Abstract

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.

Key words： submerged macrophyte decomposition temperature dissolved organic matter bacteria fungi

Received: 29 March 2018

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	Articles by authors
	YANG Fei
	YAO Jia
	ZHANG Yi-min
	ZHU Yue-ming
	KONG Ming
	BA Cui-cui
	TANG Zhi-kai

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YANG Fei,YAO Jia,ZHANG Yi-min等. Research on the dissolved organic matter and microbial community diversity of submerged macrophytes decomposed under different temperature[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(10): 3904-3913.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I10/3904

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