巴音布鲁克天鹅湖高寒湿地不同水分梯度土壤微生物及酶活性的差异

摘要

Water is the main environmental factor of a wetland,and causes a profound impact on wet-lands.This paper aims to study the alpine wetland of Bayanbulak Grassland located in the middle of Tangs-han Mountains,Xinjiang.Three kinds of water gradient including perennial pools zone (A),ephemeral pools zone(B)and perennial dry zone(C)were selected to determine the catalase,sucrase,urease and protease ac-tivities,and the different types of microorganisms by PLFA in the hope of exploring the relations between the enzymatic activity,the amount of microorganism and water,soil levels.The results showed that:except the fact that the catalase,sucrase,urease and protease significantly changed with different water gradients, they appeared to drop down as the water decreased and the soil layer went deeper;Sucrase was the most sensitive one to water changes.The activity of Zone C was significantly higher than that of Zone A and Zone B (P <0.05);The protease presented the tendency Zone A