Title: Ecohydrology function of representative plant community litter in desert steppe
Abstract: During the recovery of degraded desert steppe ecosystem,litter becomes the important intermediate link between the vegetation and soil circulation of materials and Energy Flow,and it has important effect of ecohydrology.The paper analyses hydro-logical functions of litter of the different vegetation types in desert steppe under the enclosed conditions through investigating five typical plant community in desert steppe(Agropyron mongolicum,licorice community,leymus communities,forbs communities and Artemisia communities)and the factors including volume of litter,performance of holding water,interception of precipitation,re-straining evaporation of water.The result shows that: the volume of litter and the maximum water-holding capacity are according to the order of Agropyron mongolicumlicorice communityleymus communitiesforbs Artemisia communitiesArtemisia communi-ties.In these five communities,interception of precipitation is in 3.36~5.27 mm,the rating of interception is 3.40%~6.82%.The interception of precipitation and precipitation is positive correlation to litter and the correlation between precipitation and the rating of interception is negative.Litter's interception of precipitation varies with the season.Under the different litters,depression effect to the function of soil has important variation.The litter is 0.5~2 cm cladding thickness,which will reduce the evaporation during 19.25%~76.82%,and the effect of reducing the evaporation by the litters' thickness to gradually bigger.Accumulation and overlay of litter has an obvious biological effect on soil moisture migration and storage,So it has been one of the most important ecological processes in enclosed desert steppe.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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