Abstract: The data of micro-climate in two typical wetlands,namely Aershan and Dalinor wetlands in the Autonomous Region of Inner Mongolia was analyzed and compared with the climate data nearby meteorological stations.The conclusions were as follows: 1) The cold-humid effect in both wetland was remarkable;2) The rainfall precipitation was mainly affected by regional climate(namely macro-climate) instead of micro-climate;3) The cold-humid effect in the Aershan wetland located in the humid area was more obvious than that in of the Dalinor wetland located in the semi-arid area;4) The micro-climate effect had tremendous impacts on the community structure and species distribution.The quantity of mesophyte and hygrophyte in the Aershan wetland were larger than that in Dalinor wetland.Whereas,the diversity index,evenness index and richness index in the Aershan wetland were distinctly lower than that in the Dalinor wetland.

Key words: Micro-climate, Micro-climate, Cold-humid effect, Aershan wetland, Dalinor wetland