COMPRESSION OF SOIL AROUND ROOTS
COMPRESSION OF SOIL AROUND ROOTS
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DOI：
10.1007/bf02383230
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发表时间：
1987-01-01
期刊：
影响因子：
4.9
通讯作者：
DEXTER, AR
中科院分区：
文献类型：
--
作者：
DEXTER, AR
建立了植物根系周围土壤压缩的简化模型。主要的假设是，根体积是由周围土壤孔隙度的损失所容纳的;存在最小土壤孔隙度，低于该最小土壤孔隙度，土壤将不会被压缩;以及密度随着距离根表面的距离呈指数下降，其指数是根直径的常数倍。这些假设导致简单的，实用的表达式为土壤孔隙度的根周围和数量的材料，如养分或生物体，位于一定距离内的根表面。
A simplified model is developed for soil compression around plant roots. The main assumptions are that the root volume is accommodated by loss of porosity in the surrounding soil; that there is a minimum soil porosity below which soil will not be compressed; and that the density decreases exponentially with distance from the roots surface with an exponent which is a constant multiple of the root diameter. These assumptions lead to simple, practical expressions for the soil porosity around roots and for the amounts of materials such as nutrients or organisms which lie within certain distances from a root surface.