摘要
本文研究了放牧对青藏高原高寒草甸植物群落中主要组分物种的影响。试验选用26种高寒草甸植物群落中常见的主要组分并分为两个功能群,研究这些物种在放牧压力下的生活史对策,分析了这些种的总生物量变化以及繁殖分配的差异。结果表明:放牧对植物群落中主要组分物种的生物量和繁殖分配有影响,这种影响在不同的功能群和物种之间有差异,对个别物种的影响变化和大多数物种的变化是相反的,但总体的变化趋势是个体总生物量减小,繁殖分配增加。
We studied how grazing effects on 26 dominant species in natural plant communities of alpine meadow of Qinghai - Tibet Plateau in aspect of reproductive allocation. Whether there is interspecific difference for tile effect. The result shows that grazing did have effects on biomass and its allocation of dominant species in alpine meadow. For most individual species, grazing made reproductive allocation on reproductive organs increased, individual total biomass decreased,while few of them are inversed.
出处
《青海草业》
2007年第3期2-7,共6页
Qinghai Prataculture
关键词
放牧
高寒草甸
植物群落
繁殖分配
Grazing
Alpine meadow
Plant communities
Reproductive allocation
