Effects of nitrogen input increase on bacterial and fungal communities in Phragmites australis litter in Tianjin coastal wetland under Spartina alterniflora invasion
In order to explore the changes of microbial communites in costal wetlands under the conditions of Spartina al-terniflora invasion and nitrogen input increase,three sampling plots(with different invasion degree of Spartina alterniflora)in Tianjin coastal wetland were selected for in-situ simulated nitrogen increase experiment.The composition and diversity of cul-turable bacterial and fungal communities in Phragmites australis litter under different experimental conditions were analyzed.The results showed that the invasion of Spartina alterniflora increased the number and diversity of culturable bacteria and fun-gi in Phragmites australis litter.With the increase of nitrogen input,the number and diversity of bacteria and fungi at first in-creased and then decreased.Soil ammonium nitrogen content and pH value were the main factors affecting the composition of bacterial community,while soil organic matter content and ammonium nitrogen content were the main factors affecting the composition of fungal community.
万方数据
维普
