Position: Home > Articles > Study on controlling grassland shrub and weeds by sheep night penning Ⅱ. Effects of sheep browsing and trampling on grassland vegetation and soil physical features
Acta Prataculturae Sinica
1999
(1)
83-90
绵羊宿营法防除天然草地灌木杂草研究Ⅱ绵羊啃食和践踏对植物与土壤物理性状的影响
作 者：
蒋文兰;张英俊;符义坤;冉繁军
单 位：
甘肃省草原生态研究所;甘肃农业大学
关键词：
绵羊啃食;践踏;草地植被;土壤性状
摘 要：
绵羊宿营对草地的作用因素包括啃食、践踏和粪尿的排泄。试验重点探讨了绵羊的啃食和践踏对草地植被和土壤物理性状的影响。结果表明 ,经啃食和践踏处理 (宿营强度 8羊夜 / m2 )后 ,天然植被中的草本植物地上部分已被全部清除 ,但灌木无毛丑柳仍有存活。践踏使 0～ 2 0 cm土层紧实度增加 ,10～ 2 0 cm土层容重上升 ;但 0～ 10 cm土层容重先升后降 ,土壤渗水性和透气性也有所上升 ,二者呈显著正相关。这些变化均与对照差异不显著 (P>0 .0 5)。
译 名：
Study on controlling grassland shrub and weeds by sheep night penning Ⅱ. Effects of sheep browsing and trampling on grassland vegetation and soil physical features
作 者：
JIANG Wen lan 1, ZHANG Ying jun 2, FU Yi kun 2, RAN Fan jun 1 [WT5BZ](1.Gansu Grassland Ecological Research Institute, Lanzhou 730020; 2. Gansu Agriculture University, Lanzhou 730070)
关键词：
sheep browsing; trampling; grassland vegetation; soil physical feature
摘 要：
Effects of sheep browsing and trampling on soil physical features and plant, growth were studied with sheep and shrub Salix inamoena tetradenia. Results show that sheep eating and trampling damaged dramatically the aboveground of natural vegetation. The average pressure on soil by sheep was 55 kg per square meter. Soil bulk density in depth 10～20 cm increased with the increasing of soil density, soil water and air permeability in depth 0～20 cm, but soil bulk density in 0～10 cm depth increased firstly then decreased at a night penning intensity of 8 sheep night. There were no significant difference between all the soil physical features measured and the control ( P >0.05).
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