Evaluation of different restoration models in granite soil erosion areas of Dabie Mountains

Dabie mountain area is a key ecological function area in China,and there are long-term problems of soil erosion and structural degradation of ecosystems.

Objective In order to solve the local soil erosion phenomenon,

Method the paper is based on the investigation of the causes of soil erosion and the current situation in Dabie Mountain area, through changing the type of field bank, soil structure and reducing the erosion intensity method, established a multi-restoration mode of control test plot, and meteorological indicators,vegetation indicators, soil erosion indicators and soil nutrients indicators for monitoring,and ultimately for the erosion management effect analysis and comprehensive evaluation.

Result The test results show that the effect of each means of restoration in the test area is obvious, in which the means of building a rocky bank on the ridge of the terraced field has the most significant effect on soil erosion reduction, and the covering of the field surface with straw can also effectively reduce soil erosion, and the slope protection plants can reduce soil erosion and at the same time reverse to promote the growth of plants to form a benign cycle. The optimal restoration model is to build a rocky bank and plant a hedge (alfalfa and honeysuckle), which reduces soil erosion by up to 6423.5 t/hm², increases the vegetation cover by 18%, and increases the plant root system by 9/m².

Conclusion The restoration mode proposed in this article is suitable for popularization and application in the local restoration and treatment projects, which provides reference and support for the soil erosion control work in the granite areas of China.