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Scientia Silvae Sinicae ›› 1999, Vol. 35 ›› Issue (zk): 13-19.

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A STUDY ON EFFECTS OF SOIL AND WATER LOSSES FOR SEVERAL SILVICULTURAL MEASURES IN YOUNG PLANTATION OF CHINESE FIR

Shunheng Zhang   

  1. Forestry Department of Fujian Province Fuzhou 350003
  • Online:1999-01-01 Published:1999-09-25

Abstract:

The study of Chinese fir young plantation soil and water loss for five years has been observed by establishing 16 runoff plots for various means of site preparation, tending measure, interplanting green manure and silvicultural pattern.The results indicated that the order of solid runoff in over-all site preparation >strip-site preparation >hole-site preparation, The soil runoff in hole-site preparation decreased by 40. 33 % in solid runoff of over-all site preparation, and decreased by 25.48 % in solid runoff of strip-site preparation.The solid erosion in different tending measure shows the explanding hole strip tending (98. 695t/hm2)>block tending (92.587t/hm2)>bare land (4.066t/hm2).The block tending decreased by 6. 19 % in soil erosion of the expanding hole strip tending.In different silvicultural pattern of young plantation, water, soil and nutrient loss all show that the traditional pattern >The World Bank type afforestation pattern > ecoty pepattern.The World Bank type afforestation pattern in which loss of water, soil, organic matter and nutrient(N、P、K)decrease by 6.60 %in liquid runoff, 6.08 % in solid runoff, 10.26 %in organic matter loss and 10.36 %in nutrient loss of traditional pattern.It's one of the most effective measure to add to cover planting land surface to prevents soil and water loss by interplanting green manure after controlled burningin in young plantation.

Key words: Chinese fir, Young plantation, Silvicultural measures, Soil and water loss