Plant community productivity and diversity on alpine meadow steppe in the Three River Headwater Region, Qinghai Province under different denudation levels

doi:10.11686/cyxb20140301

Abstract

Abstract: The changes in plant productivity, composition and biodiversity were studied on the plateau meadow steppe denuded to different levels by erosion in the Three River Headwater region. Aboveground, belowground and total biomasses decreased with an increase in denudation, with the reduction of belowground biomass being the most important change. Changes of aboveground biomass related to changes of functional groups. Biomass of all functional groups decreased with increased denudation. Relative biomass of sedges, grasses and legumes decreased whereas the relative biomass of forbs increased with increased denudation. Changes of richness, diversity and evenness indices showed similar trends in relation to denudation, initially decreasing but then increasing, with the lowest values at moderate levels of denudation. Species and functional diversity indices showed similar response trends in relation to the level of denudation.

CLC Number:

S812

LIU Yan-shu,FAN Jiang-wen,LI Yu-zhe,ZHANG Liang-xia. Plant community productivity and diversity on alpine meadow steppe in the Three River Headwater Region, Qinghai Province under different denudation levels[J]. Acta Prataculturae Sinica, 2014, 23(3): 1-7.

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