Study on life form and water ecotype of four plant communities in Daqinggou

Field sampling systematic analysis and laboratory experiment were conducted in order to compare life form and water ecotype of four plant communities in Daqinggou. The result showed that hemicryptophyte, chamaephyte, phanerophyte, therophyte and geophyte plants accounted for 29.47%, 27.37%, 20.00%, 18.95% and 4.21% respectively in the composition of plant life form. In the composition of plant water ecotype of Daqinggou, mesophytic, xerophytic, mesophytic-xerophytic, xerophytic-mesophytic, wet-mesophytic, wet plants accounted for 62.11%, 12.63%, 10.53%, 6.23%, 4.21% and 4.21% respectively. Water ecotype of Fraxinus mandshurica community, Quercus mongolica community and Ulmus macrocarpa community was primarily mesophytic. Mesophytic plants had larger proportion in arbor, shrub and grass. Generally speaking, the composition characteristics of life form and water ecotype reflected the particularity of climate and environment in Daqinggou.