南方红壤丘陵区林下水土流失防治研究进展

Progress in Research on Prevention and Control of Soil Erosion under Forest in Red Soil Hilly Region of South China

林下水土流失是南方红壤丘陵区种典型的水力侵蚀现象,不仅造成林地土壤质量下降,影响林地生产力,而且破坏了当地生态环境,阻碍了区域经济发展。首先分析了南方红壤丘陵区林下水土流失的成因,总结了当前林下水土流失防治研究进展,深入探讨林下水土流失防治措施在水土保持、提高土壤肥力和促进植被生长方面的作用和适用范围,进而指出当前红壤丘陵区林下水土流失防治研究存在的不足,最后对未来林下水土流失防治进行了展望。建议创新林下水土流失治理模式,形成综合性防治技术体系,加强对林下水土保持措施实施的技术指导,构建林下水土流失防治措施综合评价指标体系,为南方红壤丘陵区的林下水土流失防治措施的筛选和应用提供科学依据。

Soil erosion under forest is a typical phenomenon of hydraulic erosion in red soil hilly regions of South China.It not only causes decline of soil quality and affects productivity of forest soils,but also destroys local ecological environment and hinders development of regional economy.This study firstly analyzed causes of the soil erosion under forest in this region,reviewed progresses in current researches on prevention and control of the soil erosion under forest and then explored in depth effects and application scope of the measures so far adopted for prevention and control of soil erosion under forest on soil and water conservation,soil fertility improvement and revegetation.At the end,the paper specified deficiencies of the current researches on prevention of soil erosion under forest in this region,and presented prospects of the researches in future.The paper suggests that future efforts should be devoted to renovation of the mode for control of soil erosion under forest,development of a technology system for comprehensive prevention and control of the erosion,intensification of technical guidance on implementation of soil and water conservation measures for control the erosion,and construction of a comprehensive evaluation index system for the soil erosion control measures.It is expected that the paper may serve as a scientific basis for selection and application of appropriate measures for prevention and control of soil erosion under forest in red soil hilly regions of South China.