| 禁牧对黄河源区不同程度退化草地植物量的影响 |
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| 引用本文： | 王彦龙,马玉寿,董全民,施建军,刘德梅,李世雄,杨时海,盛丽.禁牧对黄河源区不同程度退化草地植物量的影响[J].青海畜牧兽医杂志,2011,41(3):14-16. |
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| 作者姓名： | 王彦龙 马玉寿 董全民 施建军 刘德梅 李世雄 杨时海 盛丽 |
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| 作者单位： | 1. 青海省畜牧兽医科学院,西宁,810016
2. 中国科学院西北高原生物研究所,西宁,810001 |
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| 基金项目： | 国家"十一五"科技支撑项目，青海省科技厅项目(2009-Z-602) |
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| 摘 要： | 对黄河源区不同程度退化草地禁牧4年后的地上、地下植物量变化进行了研究。结果表明：地上、地下总植物量未退化草地的禁牧地低于放牧地（P〉0.05）,中度退化草地的禁牧地显著高于放牧地（P〈0.05）,重度和极度退化草地的禁牧地有增加趋势（P〉0.05）;禁牧使各样地禾草、莎草类地上植物量均有增加趋势,其中中度退化草地差异显著（P〈0.05）,其它样地差异不显著（P〉0.05）,各样地禁牧地杂类草均有降低趋势（P〉0.05）。禁牧使未退化草地根冠比降低（P〉0.05）,其它样地根冠比增高（P〉0.05）。
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| 关 键 词： | 禁牧 黄河源区 退化草地 植物量 |
Effect of Forbidden Pasturing on Biomass of Different Degraded Degree Grassland in Area of Yonow River Source |
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| Institution: | WANG Yan-loug et al.(Qinghai Academy of Auimal and Veterinary Sciences,Xining,810016) |
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| Abstract: | The change of above-ground and under-ground biomass in different degraded degree grassland was studied after forbidder pasturing four years in the area of Yellow River source,The results showed that total above-ground and under-ground biomass in the region of forbidden pasturing were lower than those in grazing land for non-degraded grassland（P0.05）.The total above-ground and under-ground biomass in the region of forbidden pasturing were significantly higher than those in grazing land for moderately degraded grassland（P0.05）.The total biomass in the heavily and extremely degraded grassland was the increase tend afrer forbidden pasturing（P0.05）.There was the increase tend in the above-ground biomass of grasses and sedges（P0.05 in moderately degraded grassland,P0.0.5 in other）,and the decrease tend in the total biomass of forbs for all grassland（P0.05） after forbidden pasturing.The ratio of under-ground biomass to above-ground biomass in the region of forbidden pasturing was lower than that in grazing land for non-degraded grassland（P0.05）,but the one increased for moderately,heavily and extremely degraded grassland（P0.05）. |
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| Keywords: | Forbidden pasturing Yellow River source Degraded grassland Biomass |
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