Study on the distribution pattern of vegetation litter in fenced watershed in semiarid loess hilly and gully region

By determining the amount of vegetation litter in 60 plots in semiarid loess hilly and gully region fenced watershed under different habitat conditions, the affecting factors of the litter and its distribution pattern were studied. Results showed that there was a quadratic regression relationship between slope and litter amount, and the smallest value occurred at 25.5 degree. The litter amount of northern slope was 25.1% more than that of southern slope and that of northern gully was 41.7% more than that of southern gully. The aboveground biomass showed a significant positive relationship with the litter amount (P0.05). The relationship between litter amount and soil moisture was same. The litter amount was highly affected by soil moisture and aboveground biomass.