Influence of rainfall on soil and water loss of typical economic forest in the hilly area of eastern Zhejiang Province

Abstract

In order to better guide the rational utilization of regional soil resources, it is very important to study the regular pattern of soil and water loss of economic forests and the impact of rainfall on soil and water loss. Taking the typical economic forest as the experimental object, this paper collects the data on rainfall, runoff, and soil loss, and makes a statistical analysis of the correlation and quantitative relationship between rainfall and runoff, and rainfall and soil loss. The results show that the economic forest with single tree species has serious soil and water loss due to disturbance and lack of surface cover, and the impact of rainfall on soil and water loss is also very obvious. The water and soil loss of economic forests with a high surface cover or high multi-layer cover is relatively slight, and the impact of rainfall on water and soil loss is relatively weak. Therefore, in the process of economic forest development, we should pay attention to the allocation of tree species with different heights to form a complex overburden, to achieve a good effect on soil and water conservation.