Characteristics and Rules of Regeneration of Salix gordejevii in Hunshandak Sandland

Salix gordejevii is a kind of dune-fixing pioneer shrub in Hunshandak Sandland,China.It takes a vital role in improvement of ecological environment.Study on natural regeneration and sprouting regeneration of Salix gordejevii was conducted.Results showed that regeneration of Salix gordejevii belongs to r-countermeasure type,which had much seed,high germination rate and low livability.The regenerate manners of Salix gordejevii had natural seed regeneration and sprouting regeneration,and the former was hard.At the same time,growth of Salix gordejevii would decline when the drifting sand dune was fixed.In order to achieve the purpose of regeneration and restoration,people might adopt shoots cutting measure by making use of its regeneration characteristic.The results also showed that the number,length and diameter of new shoots under different treatments were significantly different.Therefore,not only shoots cutting can increase biomass of shrub,but also can increase edible parts,canopy density and effects of sand-fixing and sand-preventing.