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| Relationship between sand-fixing forest of Populus under different belts distribution pattern and their undergrowth vegetation recovery |
| Jiang Lina1，2, Yang Wenbin2，3, Yao Yunfeng1 ,Lu Qi3 |
| 1. College of Ecology and Environment, Inner Mongolia Agricultural University, 010019, Hohhot；2. Research Institute of Forestry, Chinese Academy of Forestry, 100091, Beijing；3. Institute of Desertification Studies, Chinese Academy of Forestry, 100091 , Beijing：China |
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Abstract Based on the study on the water balance and principle of wind prevention of sand-fixingPopulus forest belt with low vegetation coverage ( 15% -25%), the vegetation communities were investigated. In order to reveal the effects of sand-fixing forest belt on the natural vegetation restoration, the recovery process and species diversity difference of vegetation were studied under different interband istances and varied recovery years of sand-fixing forest belts in Aohan, Chifeng City, Inner Mongolia.The results show that ： 1 ) the vegetation recovering effects depends on the distance of Populus forest belts. The rational distance will significantly improve vegetation recovery effect ； 2) after the same recovering period, the vegetation with the interband distance of 20 m has better recovery effects than those of 15 m and 10 m, and has more stable community ； 3) with interband distance 20 m of sand-fixing forest,the vegetation could grow to natural community after many years, whereas, vegetation will develop to sparse with interband distance 10 m.
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Received: 16 October 2009
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