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- W2361108496 abstract "Mu Us sandy landscape is a mosaic of many different patches.A number of ecological processes at landscape level control the dynamics of these patches.Clonal growth of the rhizomatous grass Psammochloa villosa is one of the ecological processes not well known up to now.In this paper,the role of clonal growth of P.villosa in the patch dynamics in Mu Us sandy landscape was examined by means of field investigation in three 1hm 2 wind|eroded plots and by methods of the acid fuchsin application.Each plot was divided into 625 4m×4m quadrats.The plant species occupied most of the quadrats in the mobile sandy patches of the three plots.Its rhizomes extended from the semi|fixed sandy patches to the mobile sandy patches.Number of ramets,number of rhizome branches,length of rhizome and aboveground biomass of P.villosa extending from the semi|fixed sandy patches to the mobile sandy patches were measured.In both the mobile and semi|fixed sandy patches, P.villosa plants usually distributed most of their roots belowground from 30cm to 50cm depth.The soil water content in 30～50cm depths belowground was higher in the mobile sandy patches than in the semi|fixed sandy patches.In Mu Us sandy land,the wind|erosion and the rainfall regime discouraged the plant seeds' generation and survival.However,the heterogeneous environments caused by the wind|erosion may benefit the clonal growth. P.villosa extended its rhizomes towards the mobile sandy patches where the soil water contents were high.Clonal integration between the ramets in the different patches promoted the plant growth.This result suggests clonal growth of P.villosa played an important role in stabilizing wind|eroded patches." @default.
- W2361108496 created "2016-06-24" @default.
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- W2361108496 date "2001-01-01" @default.
- W2361108496 modified "2023-09-25" @default.
- W2361108496 title "Role of clonal growth of the rehizomatous grass Psammochloa villosa in patch dynamics of Mu Us sandy land" @default.
- W2361108496 hasPublicationYear "2001" @default.
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