Volume, Surface, Connectivity and Size Distribution of Soil Pore Space in CT Images: Comparison of Samples at Different Depths from Nearby Natural and Tillage Areas

The study of soil structure, i.e., the pores, is of vital importance in different fields of science and technology. Total pore volume (porosity), pore surface, pore connectivity and pore size distribution are some (probably the most important) of the geometric measurements of pore space. The technology of X-ray computed tomography allows us to obtain 3D images of the inside of a soil sample enabling study of the pores without disturbing the samples. In this work we performed a set of geometrical measures, some of them from mathematical morphology, to assess and quantify any possible difference that tillage may have caused on the soil. We compared samples from tilled soil with samples from a soil with natural vegetation taken in a very close area. Our results show that the main differences between these two groups of samples are total surface area and pore connectivity per unit pore volume.

The natural history of the human species: its typical forms, primeval distribution, filiations, and migrations : With a preliminary abstract of the views of Blumenbach, Prichard, Bachman, Agassiz, and other authors of repute on the subject /

Added t.-p., engraved.

The barn owl in Michigan; its distribution, natural history and food habits.

Mode of access: Internet.

Principles of zoölogy : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct : with numerous illustrations : Part I : comparative physiology for the use of schools and colleges /

No more published.

The theory of agreeable sensations: in which the laws observed by nature in the distribution of pleasure are investigated; and the principles of natural theology and moral philosophy are established.

Preface by J. J. Vernet.

A hunter's wanderings in Africa: being a narrative of nine years spent amongst the game of the far interior of South Africa, containing accounts of explorations beyond the Zambesi, on the river Chobe, and in the Matabele and Mashuna countries, with full notes upon the natural history and present distribution of all the large Mammalia,

Mode of access: Internet.

A natural history of the British butterflies ; their world-wide variation and geographical distribution. A text-book for students and collectors.

Volume 4 edited by George Wheeler.

A natural system of botany, or, A systematic view of the organization, natural affinities, and geographical distribution, of the whole vegetable kingdom : together with the uses of the most important species in medicine, the arts, and rural or domestic economy /

Includes index.

An introduction to the natural system of botany: or, A systematic view of the organization, natural affinities, and geographical distribution of the whole vegetable kingdom; together with the uses of the most important species in medicine, the arts, and rural or domestic economy.

Mode of access: Internet.

Agriculture of New-York : comprising an account of the classification, composition and distribution of the soils and rocks; and the natural waters of the different geological formations ;together with a condensed view of the climate and the agricultural productions of the state /

General author and subject index may be found in "Index to publications of the New York State Natural History Survey and New York State Museum. By Mary Ellis. 1903." (New York. State Museum. Bulletin 66)

The natural history of plants, their forms, growth, reproduction, and distribution /

Plates numb. consecutively; Plates II, III, V, VI, IX, XII-XVI have outline diagrams on guard sheets.

The natural history of plants, their forms, growth, reproduction, and distribution;

Identical with 1st edition (London, Blackie & son; New York, Holt & co., 1894-95; issued in 4 half-vols.) except that the 16 colored plates contained in that edition are omitted.

Principles of zoology : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct, with numerous illustrations : part I, Comparative physiology, for the use of schools and colleges /

No more published under this title.

The natural history of plants, their forms, growth, reproduction, and distribution. From the German of Anton Kerner von Marilaun,

Mode of access: Internet.