江苏盐城新洋港互花米草盐沼的微生物区系调查

于2004年10至2005年8月期间，调查了江苏省盐城新洋港海岸带互花米草盐沼土壤微生物的时空分布，以期了解互花米草入侵对盐沼微生物区系的影响。根据植被不同，将采样点划分为盐蒿带、米草带和光滩带，采用稀释平板法进行微生物分离计数。结果表明互花米草盐沼微生物数量总体表现为细菌＞放线菌＞真菌。在空间分布上，细菌表现为米草带＞碱蓬带＞光滩带，真菌为米草带≥碱蓬带＞光滩带，放线菌为碱蓬带＞米草带＞光滩带。在时间分布上，在气温最高的8月，三类微生物的数量都达到最大。盐沼植被类型、土壤性质、有机质含量、环境的温度和湿度等因素，对微生物的区系分布起着重要作用

Study of Microbial Flora of Spartina Salt Marshes of Yancheng Jiangsu Province

The investigations of microbial flora of Spartina salt marshes, Yancheng, Jiangsu Province were carried out during October 2004 and August 2005, which aims to reveal the influence of introduction of Spartina on the microbial flora of salt marshes. The sampling sites were divided into Suaeda salsa land, Spartina land and beach according to the vegetation. The microorganisms were isolated and counted with pour plate technique. The results indicate that the amount of bacteria is bigger than actinomycetes, and the amount of fungi is least. From the point of spatial distribution, the amount of microbes in Spartina land is ＞Suaeda salsa land＞beach for bacteria, Spartina land≥Suaeda salsa land＞beach for fungi and Suaeda salsa land＞Spartina land＞beach for actinomycetes. From the point of temporal distribution, the amount of microbes is largest at August. Vegetation type, soil characteristics, content of organic matter, temperature and humidity of environments play important roles on the microbial distribution in salt marshes.