The relationship between fine roots distribution of Populus simonii and Caragana korshinkii and soil water in the wind-water erosion crisscross region of the Loess Plateau were studied based on 2-year field positioning observation.The following conclusions can be drawn from this paper: 1) The fine root area density(FRAD) of Populus simonii and Caragana korshinkii declined with the increasing of soil depth,the proportion of fine roots in 0-100 cm soil layer was 63% and 95% of the whole profile,respectively.2...
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