Ch.2.
This presentation is the property of its rightful owner.
Sponsored Links
1 / 19

Ch.2. PowerPoint PPT Presentation


  • 106 Views
  • Uploaded on
  • Presentation posted in: General

Ch.2. Soil: Where the spheres coexist & interact (having interfaces of different spheres) Subject of many study fields, including environmental sciences Different definitions by different study fields

Download Presentation

Ch.2.

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Ch 2

Ch.2.

  • Soil:

    • Where the spheres coexist & interact (having interfaces of different spheres)

    • Subject of many study fields, including environmental sciences

    • Different definitions by different study fields

    •  In this course, we simply define it as “the unconsolidated material on the Earth’s surface”


Ch 2

  • Importance of soil

    • Most agricultural production (producing foods!) relies on it

    • Home of many life forms, consequently, essential part of the balance among the ecosystems on Earth

    • Big buffer against the environmental impacts (natural attenuation)

    • So many (our) activities would not be possible to occur without soil

    • Others


Ch 2

From http://www.soilfoodweb.com/sfi_approach1.html


Ch 2

From http://www.threer.co.uk/services_remediation_natatten.php


Ch 2

  • Classification of soil

    • Genetic classification: zonal, intrazonal, azonal soils

    • Engineering classification: based on the constituent’s grain size and their composition

    • Classification with taxonomy

      • Order > Suborder > Great Group > Subgroup > Family > Series


Ch 2

Distribution of zonal, intrazonal,

and azonal soils in North Island,

New Zealand

From http://www.teara.govt.nz/en/1966/soils-and-land-use/4


Ch 2

Soil classification with the grain compositions

From http://www.oneplan.org/Water/soil-triangle.asp


Ch 2

Unified soil classification

system (USCS)

From http://www.geology.sdsu.edu/classes/geol552/seddescription.htm


Ch 2

From http://www.soils.wisc.edu/courses/SS325/soiltaxonomy.htm


Ch 2

10 Soil Orders

From http://www.soest.hawaii.edu/krubin/gg425-sched.html


Ch 2

From http://eusoils.jrc.ec.europa.eu/library/maps/Circumpolar/classification.html


Ch 2

  • Characteristics (Properties) of soils are determined by

    • Climate,

    • Topography,

    • Parental rock, and

    • Vegetation and other biological activities


Ch 2

Climate & soil

From http://www.soest.hawaii.edu/krubin/gg425-sched.html


Ch 2

Topography & soil

From http://www.siera104.com/Soils/index.html

From http://www.soil-net.com/legacy/advanced/soil_formation4.htm


Ch 2

Soil properties affected by parent materials

From http://www.dpi.vic.gov.au/agriculture/dairy/pastures-management/fertilising-dairy-pastures/chapter-3


Ch 2

Influence of vegetation on soil properties

(KELLY L.M. DECKER& R.E.J. BOERNER

RevistaChilena de Historia Natural 76: 371-381, 2003 )

From http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000300003&lng=en&nrm=iso&ignore=.html


Ch 2

  • Soil profile: Characteristics of vertically developed layers parallel to the surface (horizons)

From http://www.fao.org/Wairdocs/ILRI/x5546E/x5546e04.htm


Ch 2

From http://quakeinfo.ucsd.edu/~gabi/erth15-06/Lecture24.html


Ch 2

From http://ecoclublive.blogspot.com/2011/01/soil.html

From http://www.saburchill.com/lab/field/field02.html

From http://ncealevel2sci.wikispaces.com/Fertilizers


  • Login