Artificial watershed suitable for studying rainfall-stratified runoff relationship

The invention relates to an artificial watershed, in particular to an artificial watershed suitable for studying a rainfall-stratified runoff relationship. The artificial watershed comprises three parts: a main part, an input part and an output part of the artificial watershed. The main part comprises a watershed boundary (1), an experimental soil body (2), a longitudinal collecting trench (3) anda lateral collecting trench (4); and the input portion comprises artificial rainfall systems (5), (6) and a measurement station network. The output part refers to an observation room (7) of the artificial watershed, stratified flow gaging weirs (9) are set according to the number of collecting grooves, and water sample collection points of the system are configured. Compared with the traditionalstudy of the rainfall-stratified runoff relationship using the natural experimental watershed, the artificial watershed provided by the invention can accurately measure hydrological elements in threeaspects of input, output an