干旱区研究

Arid Zone Research ›› 2016, Vol. 33 ›› Issue (3): 560-568.doi: 10.13866/j.azr.2016.03.16

• Plant and Plant Physiology • Previous Articles     Next Articles

Application of Double-seedling Afforestation Technique in Big Fish-scale Pits in the Loess Gully Area

ZHU Yu-shen1, CHEN Yu-xuan1, ZHA Tong-gang1, YANG Zong-ru2, ZHANG Zhi-qiang1 FENG Huan-cheng2, ZHANG Xiao-xia1, WANG Gao-min3   

  1. 1. College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;
    2. Jixian Couinty Forestry Service Center,Jixian County 042200,Shanxi,China;
    3. Sollege of Forestry,Beijing Forestry University,Beijing 100083,China
  • Received:2015-06-11 Revised:2015-12-30 Online:2016-05-15 Published:2016-05-31

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Abstract: The soil volumetric moisture content,soil erosion and vegetation growing status as well as the application of double-seedling afforestation technique in the big fish-scale pits were studied by two-year afforestation experiments on slopes in a loess gully region during the period from 2013 to 2014,and the two traditional soil preparation ways in the loess gully area were compared.The results showed that there were the discrepancies in the soil volumetric moisture content,soil erosion and vegetation growing status among different silvicultural techniques.The average monthly soil volumetric moisture content inside the big fish-scale pits were 3.34% and 1.95% higher than that in the traditional fish-scale pits and level trenches respectively,total soil erosion were 1.11% and 18.15% lower than that in the traditional fish-scale pits and level trenches respectively,and there was a significant discrepancy (P<0.05).Height of trees inside the big fish-scale pits was higher than that in the traditional fish-scale pits and level trenches.At the end of 2014,the height of arbors inside the big fish-scale pits was higher than that in the traditional fish-scale pits significantly,height of shrubs was significantly (P<0.05) higher than that in both traditional fish-scale pits and level trenches.Moreover,the survival rates of plants in the big fish-scale pits were 10.84% and 8.34% higher in 2013 and 10.00% and 8.33% higher in 2014 than those in the traditional fish-scale pits and level trenches respectively.The soil volumetric moisture content was the highest and the soil erosion was the lowest in the big fish-scale pits in the experimental area,and the closing of stand canopy was much sooner because of the highest survival rates of trees.In conclusion,the silvicultural technique in the big fish-scale pits is proper to be applied and popularized in afforestation in the loess gully region.

Key words: afforestation technique, big fish-scale pit, soil volumetric moisture content, soil erosion, vegetation growing status, loess gully region