The Preliminary Study on Foraging Habitat of Grus japonensis in Spring in Sanjiang Nature Reserve

Using quadrat factor assay method,the investigate about the foraging habitat of Grus japonensis in Sanjiang nature reserve shows that Grus japonensis mainly foraging in the wetlans which have Carex spp.,Calamagrostis angustifolia.The hight of these plants was less than 40cm,the density was lower than 400 plants per square meter,vegetation cover was mainly between 0 and 25%,and the depth of the foraging place water was 5~15cm,the distance of human disturbance was greater than 1500m.Human activity greatly affects Grus japonensis foraging.In spring,Grus japonensis sometimes foraging in the burns down.