Influence of vegetation distribution on sediment yield in forested marly gullies

摘要: Abstract The cover provided by forest vegetation makes it possible to fight erosion efficiently. Furthermore, barriers can also play a major role trapping eroded sediments and thus located downslope of gully be important. objective this study is highlight the distribution in marly reducing sediment loss at outlet. To do this, yield gullies with similar geological geomorphological components, but different distribution, was studied for 2 years. Sediment traps installed outlets permitted distinction active from inactive ones. results show that activity not correlated percentage total cover, low floor. This due processes highlights importance spatial Thus, have very activities, exist are only partially covered vegetation. Inactive as 33% occur where mainly present above 50% floor surface, generally inactive.