caa a22 4500 47711234X CHVBK 20180405111612.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF02185563 doi (NATIONALLICENCE)springer-10.1007/BF02185563 Ringrose-Voase Anthony CSIRO Division of Soils, GPO Box 639, 2601, Canberra, ACT, Australia aut Measurement of soil macropore geometry by image analysis of sections through impregnated soil [Elektronische Daten] [Anthony Ringrose-Voase] The geometry of the soil pore space affects root growth directly by providing pathways for root extension and indirectly through its effects on soil aeration and on water infiltration, redistribution and drainage. Image analysis of sections through impregnated blocks of undisturbed soil allows quantitative assessment of the pore space. Samples are dehydrated and impregnated with resin containing a fluorescent dye. Once the resin has hardened, the blocks can be cut to reveal a section through the structure. An image of the pore space, which is now filled with resin, can be obtained using ultra-violet light either photographically or digitally. Digital images are segmented into pore space and solid. Image analysis techniques can be used to classify the pore space into channels, fissures and packing pores. This allows appropriate measurements to be made on each class so that stereology can be used to estimate 3-D parameters from the measurements made on the image. Various indices can also be derived to quantify the pore structure. Kluwer Academic Publishers, 1996 image analysis nationallicence pattern recognition nationallicence soil pore space nationallicence soil structure nationallicence stereology nationallicence Plant and Soil Springer Netherlands; gopher://gopher.wkap.nl 183/1(1996-06-01), 27-47 0032-079X 183:1<27 1996 183 11104 https://doi.org/10.1007/BF02185563 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02185563 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ringrose-Voase Anthony CSIRO Division of Soils, GPO Box 639, 2601, Canberra, ACT, Australia aut NATIONALLICENCE 773 0- Plant and Soil Springer Netherlands; gopher://gopher.wkap.nl/ 183/1(1996-06-01), 27-47 0032-079X 183:1<27 1996 183 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer