摘要
以高寒草甸类草地为测定对象,对轻度、中度和重度退化草地禁牧前后地上和地下生物量的分布情况进行了比较测定。结果表明,禁牧封育后较禁牧前莎草、禾草地上部分分别增加了3.51和4.59个百分点,地下部分分别增加了2.87和4.30个百分点,杂类草地上部分下降了8.10个百分点,地下部分下降7.17个百分点。
Comparative survey of biomass of grass aboveground and underground was carried out in slightly degraded grassland , medium degraded grassland and severely degraded grassland before forbidden grazing and after forbidden grazing in alpine meadow grassland in Qinghai . The results showed that aboveground biomass of and grasses each increased 3.15and 4.59 percent point and underground biomass of and grasses each increased 2.87and 4.30 percent point, aboveground biomass of weeds decreased 8.10 percent point and underground biomass of weeds decreased 7.17 percent point.
出处
《青海草业》
2006年第3期7-9,共3页
Qinghai Prataculture
关键词
高寒草甸
退化草地
禁牧封育
生物量
Alpine meadow
Degraded grassland
Forbidden grazing
Biomass
