Effects of Clipping on Aboveground Plant Biomass and Total Herbage Yields in a Grassland above Treeline in Central Himalaya, India
The effects of clipping on aboveground plant biomass and total herbage yields are presented for an alpine grassland of Central Himalaya. The total herbage yield declined significantly (p < 0.05) more in plots clipped in June and July than in the plots clipped in May and in the plots which were not clipped (control plots). In terms of the temporal effect of clipping, the rate of recovery (net growth rate following clipping) was reduced by 88.5% in plots clipped in July and by 57.1% in plots clipped in June compared to the plots clipped in May. Similarly, in terms of the compound effect of timing of clipping and of intensity of clipping, the rate of recovery was reduced by 95.1% in thrice-clipped and by 62.3% in twice-clipped plots compared to once clipped plots. Comparison of results of the two experiments indicates that timing of clipping is a more dominant factor than the intensity of clipping. Late clippings have more adverse effects on aboveground live shoot biomass and total herbage yields than the clipping early in the growing season.
Citation Note: This article was published when our journal had an earlier shorter name: "Arctic and Alpine Research."