秦巴山区坡耕地“药用植物篱+土坎”整治模式生态效益研究

秦巴山区是全国坡耕地比例最高的地区之一,水土流失十分严重。针对当地的坡耕地水土流失问题,结合当地中药产业,选取了乔木类、灌木类、草本类共6种药用植物作为植物篱物种,通过对土坎土壤营养成分、土壤理化性状及对梯地小气候的影响三个方面的测定及分析,探求其在秦巴山区水土流失防治中的生态效益。结果表明:一、植物篱成活率高,能控制耕作面的营养成分流失,改良土壤的理化性质;二、植物篱能改善其梯地内的小气候,有利于作物产量提高。

Research on Ecology Benefits of Renovation Pattern Constituted by both Hedgerow System and earth bank on Sloping Field in the Qinba Mountain Area

Qinba mountain area is one of the areas who have the highest rate of the slope farmland around the country, where soil and water loss is serious. Based on the local traditional Chinese medicine industry, six kinds of medicinal plants belonging to arbors, shrubs and herbaceous are selected as hedgerow species in this study and then through the determination and analysis of the three aspects which contain the soil nutrients of earth bank, the effects on the physical and chemical characteristics of soil and the influence on the microclimate of terraces, the ecological benefit of the hedgerow in the control of soil and water loss is preliminarily researched. The conclusions obtained from the results of experiment are as follows: Firstly, the hedgerow not only has a high survival rate, but also is capable of controlling the loss of nutrients in the cultivated surface and reforming the physical and chemical properties of soil. Secondly, the hedgerow can improve the microclimate of terraces, which is good for the increase of output.