river locust
1.Through the analysis of random sampling of major arbor and bush forest in the basins of Kuye, Tuwei and Gushanchuan river a cornelation model of crop density and degree of canopy was created. On the basis of this model and local situation of forest for soil conservation, the proper afforestation oleasity. (tree/hm2) of locust, Korshinkii, Salix mongolical, Hedysarm mongolicum, Hedysarm scoparium was 2571, 4000, 2400, 3000, 3000 respectively.
