Restoration course of Vegetation community characteristics in the revegetation of plateau zokor mounds in the Qinghai-Tibet Plateau

doi:10.11686/cyxb2019233

Abstract

Abstract: The characteristics of plant communities are an important method for evaluation of the natural revegetation of plateau zokor mounds. This study investigated the plant community characteristics of plateau zokor mounds at different stages in the natural revegetation process in alpine meadow grassland of Luqu and Xiahe Counties, Gansu Province. It was found that vegetation cover, Patrick index, Shannon-wiener index, Pielou index, total biomass, biomass of perennial Poaceae, Cyperaceae biomass and perennial forb biomass of revegetating plateau zokor mounds increased with time at both Luqu County and Xiahe County study sites. By contrast, the biomass of annual and biennial species on plateau zokor mounds initially increased, and then decreased with time. The vegetation cover, plant diversity and productivity values of plateau zokor mounds in Luqu County were greater than those in Xiahe County. These results suggest that the species secondary succession of vegetation restoration of plateau zokor mounds was similar, whereas the rate of vegetation recovery differed between Luqu County and Xiahe County. These findings provide useful insight into the natural vegetation recovery process that occurs on plateau zokor mounds in the Qinghai-Tibet Plateau.

Key words: zokor-mound, plant functional group, species diversity, productivity, restoration years

YANG Ding, QI Hao-hao, WANG Qian, XU Hai-peng, ZHANG Jing, ZHANG Hong-yan, GUO Zheng-gang. Restoration course of Vegetation community characteristics in the revegetation of plateau zokor mounds in the Qinghai-Tibet Plateau[J]. Acta Prataculturae Sinica, 2020, 29(2): 114-122.

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