Impact of slash disposal on soil and water loss and the growth of planted seedlings

The three methods of slash disposal in this experiment were no treatment, strip piling and burning. The results obtained from this study showed that the soil erosion, water and nutrient loss were higher in the logged areas by burning than in the logged areas by no treatment and strip piling. The soil and water loss was not serious when the slope degree of the logged area was less than 16^o. The survival rate of planted seedlings was higher and the growth was better in the logged areas followed by burning than in the logged areas by no treatment and strip piling. Burning should not be used when the slope was more than 23^o. Foundation item: This project was supported by Chinese Academy of Science and National Natural Science Foundation of China (No. 39770609). Biography: ZHAO Xiu-hai (1961-), male, Ph. doctor, professor of Beihua University. Jilin 132013, P.R. China. Responsible editor: Zhu Hong