| Our experiment was conducted in a riparian area in Yuyangshan region of Taihu lake, We analyzed the distributions and quantity of soil nutrient and microbial biomass, analyzed the ecological factors. The experiment would be useful to understand the habit characteristics of riparian and be useful to the management of riparian ecosystem. Research sites was choosed three bands, three areas were set according to the distance from lake, also three small repeat plots was set in each sampling area. The distributions of soil nutrient and soil microbial biomass were examined from horizontal, vertical and deep, and analyzed some ecological factors which might influence soil nutrient and microbial biomass. We got results following: (1)The distributions of soil nutrient and soil microbial biomass decreased as the soil profiles decreased, and had significant difference in different soil profiles. (2)Different areas had different quantity of nutrient and microbial biomass, low areas had high quantity of nutrient and microbial biomass and high areas had low quantity of nutrient and microbial biomass. (3)There was no significant difference of nutrient and soil microbial biomass among different bands. (4)There was a positive correlation between soil microbial biomass and soil water content, but pH had little difference in soil of Yuyangshan's riparian, and showed no significant relationship with soil microbial biomass. (5)The quantity of soil nitrate nitrogen and ammonium nitrogen showed significant difference in different seasons, high in November, middle in March, and low in July. The change of season influenced the growth of vegetation, and growth of vegetation influenced the quantity of nitrate nitrogen and ammonium nitrogen. |
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