Vertical Vegetation Structure Below Ground: Scaling from Root
Vertical Vegetation Structure Below Ground: Scaling from Root
Vertical Vegetation Structure Below Ground: Scaling from Root
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<strong>Vertical</strong> <strong>Vegetation</strong> <strong>Structure</strong> <strong>Below</strong> <strong>Ground</strong>: <strong>Scaling</strong> <strong>from</strong> <strong>Root</strong> to Globe 347Fig.2.Soil depth at which maximum lateral root spread was observed for 479 plants ofdifferent growth forms in global,water-limited environments (ratio of mean annual precipitation/meanannual potential evapotranspiration 40% ofall plant-available phosphorus,>30% of total nitrogen,and about 30% ofpotassium (Jobbágy and Jackson 2001). Clearly,nutrient availability isstrongly related to root densities, but on its own does not fully explain thehigh concentration of roots in the upper layers of the soil.
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