Based on the investigations of vegetation and soils

changes of vegetation recovery at different inter-belt distances and soil nutrients after different recovery years in a belt-type artificial forest of Aohan Banner

Chifeng City

Inner Mongolia are studied to reveal the promotion effects of belt-type sand fixation forest in the inter-belt vegetation recovery and soil development.Results show that(1) belt-type poplar plantation can significantly improve in inter-belt vegetation recovery and soil development.(2) Inter-belt distance can affect the effects of vegetation recovery and soil development.The recovery effect is in the order of 24 m inter-belt distance 18 m inter-belt distance 12 m inter-belt distance.(3) Difference of inter-belt distance has an important influence on niche breadth of species.(4) Gaussian model can be used to describe the effect of inter-belt vegetation recovery.According to the model

sand fixation forest belts can best promote inter-belt vegetation recovery if inter-belt distance is between 28 and 40 m.