灌溉排水2000，Vol.19Issue(3)：71-76,6.
CT在土壤大孔隙研究中的应用评述
A Summary of CT Application in Research of Soil Macropores
摘要
Abstract
Soil Macropores have great influence on water and solute movement in soil. Several undis-turbed soil columns with various situations disturbed soil columns filled uniformly with special size ofsoil aggregates are scanned with CT. It is discussed systematically that how caught images and plotsof CTN value in two dimension matrix taken from CT scanning process are used to characterize thesize, number, type, distribution and continuity of macropores in the soils with traditional statisticalmethod and fractal geometry method. Results indicate that CT scanning is a promising, non-destruc-tive method for characterizing macropores in soil.关键词
大孔隙/CT扫描/容重/X-射线衰减系数/分形维数/分形非均匀性Key words
macropores/CT scanning/bulk density/X-ray attenuation coefficient/fractal dimension/fractal lacunarity分类
农业科技引用本文复制引用
冯杰,郝振纯..CT在土壤大孔隙研究中的应用评述[J].灌溉排水,2000,19(3):71-76,6.基金项目
国家自然科学基金(59779022) （59779022）
