Effects of interseeding on plant diversity and productivity in Maqu alpine desertified meadow

Abstract

Abstract: The effects of interseeding on species richness, species diversity, and productivity in Maqu alpine desertified meadow is discussed. Interseeding markedly increased species richness and groups density. Species density was increased 8.08％ by interseeding with Poa pratensis, and by 39.65％ with mixed interseeding with Festuca sinensis and Elymus nutans. The Pielou, Simpson, and Shannon-Weiner indexes were all reduced after interseeding, with F. sinensis alone or in a mixture with F. sinensis and E. nutans. Above-ground biomass increased significantly after interseeding and reached about 55.74％ more than the control after mixed interseeding with E. nutans, F. sinensis and P. pratensis. Grasses accounted for more than 50％ of the total biomass and are the main yield components in grasslands and can contribute most to the improved economic value of meadows. Interseeding is therefore beneficial to recovering desertified meadow and protecting ecological environments.

CLC Number:

S812

ZHENG Hua-ping, CHEN Zi-xuan, NIU Jun-yi, GAO Yu-hong. Effects of interseeding on plant diversity and productivity in Maqu alpine desertified meadow[J]. Acta Prataculturae Sinica, 2009, 18(3): 28-33.

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