【作者】 周秉荣； 李凤霞； 颜亮东； 才仁扎西； 耿晓平；

【Author】 ZHOU Bing-rong1 LI Feng- xia 1 YAN Liang-dong1 CAIREN Zha-xi 2 GENG Xiao-ping2 (1, Qinghai Meteorological Science Institute ,Xining, Qinghai 810001; 2, Qinghai Yushu Meteorological Bureau , Jiegu ,Qinghai,815101)

【机构】 青海省气象科学研究所； 青海省玉树州气象局；

【摘要】 在青藏高原隆宝滩湿地进行不同放牧强度试验,应用统计学成对数据的t检验方法,定性研究围栏封育(EN)、轻度放牧(LG)、中度放牧(MG)、重度放牧(HG)、自由放牧(GU)五种放牧处理对不同深度土壤湿度的影响差异。结果表明:随着牧压强度的增强,影响湿地土壤水分的显著性也增强。MG和LG处理土壤水分的差异表现在牧草根系层(20-30cm);HG对LG、MG的差异随深度的增加而减弱;EN处理和LG、MG处理对土壤水分的影响各个层次都不显著,EN处理和HG处理对土壤水分的影响显著,影响深度达50cm;GU处理的影响最为显著,从土壤表层到50cm深度,均有EN>HG>GU。更多还原

【Abstract】 Utilizing paired T test method, experiment of different grazing intensity was finished in Longbao beach in Tibetan plateau , in which the difference of influence to soil moisture among five kinds of grazing treatment ,they were enclosure ,light grazing ,middle grazing ,high grazing, grazing uncontrolled, were conducted. The results showed that the significance of affecting soil moisture improved with increasing of grazing intensity. The difference of soil moisture between MG and LG treatment appeared in herbage root layer(20-30cm); with increasing of depth, differences between HG and LG , HG and MG improved; the difference of soil moisture between EN and LG , EN and MG were not significant in all layers ; but the difference of soil moisture between EN and HG were significant to 50cm in depth.; the difference of EN treatment was the most significant , and it appeared EN>HG>GU from soil surface to 50cm.更多还原