紫色丘岗区水土流失严重地区植被恢复技术研究

Study of Vegetation Recovery Techniques in a Seriously-Eroded Purple Soil Hilly Area

以湖南衡南县紫色丘岗水土流失严重地区为对象，采取先种草、栽灌木然后造林人工促进自然演替的方法，进行了植被恢复技术的研究．经过６年试验表明，植被盖度由原来的１０％提高到９１％，植物种类由３０种增加到７１种．从改善生态环境的效果看，在各种树木、草木配置模式中，以草、灌、乔配置模式最佳，草、灌配置模式次之，草本模式较差．

In a seriously-eroded purple soil hilly area in Hengnan County,Hunan Province,the study of vegetation recovery techniques has been carried out by means of planting grass firstly,bush secondly,and trees lastly to the promotion of natural succession.The results of six years'experiments show that the coverage of vegetation has been raised from 10% to 91%, and its species increased from 30 sp.to 71 sp.Considering the effect upon the improvemont of ecololgical environment,We can see that the configutation pattern of herbs and bush and arbores is optimal,that of herbs and bush is next,and that of herbs is unsatisfactory.