Effects of rainfall intensity on runoff and nutrient loss of gently sloping farmland in a karst area of SW China.

ABSTRACT: Nutrient losses from sloping farmland in karst areas lead to the decline in land productivity and nonpoint source pollution. A specially tailored steel channel with an adjustable slope and underground hole fissures was used to simulate the microenvironment of the "dual structure" of the surface and underground of sloping farmland in a karst area. The artificial rainfall simulation method was used to explore the surface and underground runoff characteristics and nutrient losses from sloping farmland under different rainfall intensities. The effect of rainfall intensity on the nutrient loss of farmland on karst sloping land was clarified. The results showed that the surface was the main route of runoff and nutrient loss during the rainy season on sloping farmland in karst areas. The influenc

SUBMITTER: Yao Y 

PROVIDER: S-EPMC7971500 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature