JOURNAL OF NATURAL RESOURCES ›› 1996, Vol. 11 ›› Issue (1): 33-40.doi: 10.11849/zrzyxb.1996.01.005

• Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS • Previous Articles     Next Articles

EFFECTS OF DIFFERENT FOREST GROUND CLEARANCES ON THE SOIL EROSION OF THE ECOSYSTEM OF YOUNG CHINESE FIR FOREST

Ma Xiangqing, Yu Xintuo, He Zhiying, Yang Yusheng, Liu Aiqin, Lin Kaiming   

  1. Fujian Forestry College
  • Online:1996-03-25 Published:1996-03-25

Abstract: Through the method of fixed position observation of the run-off plots, the losses of water, soil and nutrients of the forest land of different forest ground clearances have been studied for six years. The results show that different forest ground clearances (control burning and non-burning) result in great difference of soil erosion. As time goes on, the difference decreases. The losses of water, soil and nutrients of the land of control burning within six years are 8767.32m3. hm2, 38.004t / hm2 and 523.161 t/hm2 respectively. The annual losses of soil erosion decrease as the degree of ground cover increases. The first two years after control burning are a key period for controlling the soil erosion at the control burning site. The factors that affect the soil erosion of the ecosystem of young Chinese fir forest are analyzed through applying a mixed quantification theory's model I. The results indicate that the most important factor is control burning.

Key words: forest ground clearance, Chinese fir, ecosystem, soil and water loss