文章摘要
王晓莹,冯金侠,韦生宝,陈长青.不同年限稻鸭共作对水体藻类群落结构的影响[J].农业环境科学学报,2021,40(9):1860-1868.
不同年限稻鸭共作对水体藻类群落结构的影响
Effects of different durations of rice-duck farming on the structure of algal communities in water
投稿时间:2021-02-24  
DOI:10.11654/jaes.2021-0220
中文关键词: 稻鸭共作  藻类  高通量测序  多样性  群落组成
英文关键词: rice-duck farming  algae  high-throughput sequencing  diversity  composition of communities
基金项目:国家科技重大专项(2016YFD0300905)
作者单位E-mail
王晓莹 江苏省现代作物生产协同创新中心 南京农业大学应用生态研究所, 南京 210095  
冯金侠 江苏省现代作物生产协同创新中心 南京农业大学应用生态研究所, 南京 210095  
韦生宝 江苏省现代作物生产协同创新中心 南京农业大学应用生态研究所, 南京 210095  
陈长青 江苏省现代作物生产协同创新中心 南京农业大学应用生态研究所, 南京 210095 1996001@njau.edu.cn 
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中文摘要:
      为探究不同规模、不同年限稻鸭共作系统水体藻类群落组成及多样性的差异,通过设置不同年限(4、20 a)和不同规模(0.067、0.200、0.333 hm2)稻鸭共作田,利用高通量测序等手段,分析稻鸭共作田水体藻类多样性及群落结构的变化规律。结果表明:稻鸭共作田水体藻类的丰富度指数较非稻鸭共作田高,长期稻鸭共作田水体藻类Ace丰富度指数较短期共作田高,物种数增多;稻鸭共作田与非稻鸭共作田水体藻类优势种均为裸藻、绿藻、蓝藻,但稻鸭共作田绿藻、蓝藻的相对丰度高于非稻鸭共作田,另外稻鸭共作田规模大小影响蓝藻的相对丰度,规模越大蓝藻相对丰度越低;稻鸭共作田藻类多样性指数比非稻鸭共作田高,水体藻类群落结构差异较大,稻鸭共作系统的水体藻类群落结构表现出一定的相似性。冗余分析表明,对于稻鸭共作后期而言,影响非稻鸭共作田水体藻类群落结构的主要环境因子是溶解氧,而影响稻鸭共作水体藻类群落结构的环境因子是可溶性钾和pH。研究表明,长期稻鸭共作系统提高水体藻类多样性,改变藻类群落组成,从而影响农田水体生态环境。
英文摘要:
      This study aimed at exploring how different scales(0.067, 0.200 hm2, and 0.333 hm2) and duration(4 a and 20 a) of rice-duck farming could affect the differences in the composition and diversity of algal communities using high-throughput sequencing and other methods to analyze algal diversity and community structure in the water. The results showed that the algal abundance index of water in riceduck farming fields was higher than that in non-rice-duck farming fields. Moreover, the Ace abundance index of water bodies in long-term rice-duck farming fields was higher than that in short-term farming fields, and the number of species also increased. In non-rice-duck farming fields and rice-duck farming fields of different scales and duration, the dominant algal species were Euglenophyta, Chlorophyta, and Cyanophyta. The abundances of Chlorophyta and Cyanophyta in rice-duck farming fields were higher than those of traditional farming. The scale of rice-duck farming affected the abundance of cyanobacteria; the larger the scale, the lower the abundance of Cyanophyta. The algal diversity index of the rice-duck farming field was higher than that of the non-rice-duck farming field, and the algal community structure of the water was considerably different. The water algal community structure of the rice-duck farming system showed certain similarities. Redundancy analysis showed that for the late stage of rice-duck farming, dissolved oxygen was an important environmental factor that affects the structure of the algal community in traditional farming; the environmental factors that significantly affected the algal community structure in rice-duck farming were soluble potassium and pH. Research shows that the long-term rice-duck farming system increases algal diversity in water and changes the composition of the algal community, thereby affecting the ecological environment of the farmland water.
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