SOILS-L: 199708XX
is the compilation of discussion during Aug 97
via AB4EL Web Digests @ SunSITE
Date: Fri, 01 Aug 1997 00:04:56 -0600
From: Automatic digest processor (LISTSERV@crcvms.unl.edu)
Subject: SOILS-L Digest - 28 Jul 1997 to 31 Jul 1997
There is one message totalling 63 lines in this issue.
Topics of the day:
1. Soil Erosion Information Needed
----------------------------------------------------------------------
Date: Thu, 31 Jul 1997 23:05:26 -0400
From: Newby Ely (newby@CLARK.NET)
Subject: Soil Erosion Information Needed
Hi Soils-L'ers!
It has been months since I asked for help regarding soils. I thank those
who responded and advised me, giving book titles. Since then, I have
located the soil taxonomy and the soil series for the three places in
Idaho, Utah and Wyoming, for my Geography Thesis.
The soil series names, the soil textural classes are at the bottom of my
inquiry. For Utah and Wyoming, it was under 7 inches for annual rain
precipitation, with 12.50" for Idaho.
I still would like to know/clarify:
1) Soil Texture Class:
Which soil particle is easiest to be swept by the wind? Silt? Loam? Sand?
It would be great if there is a chart or graph showing the wind-erosibality
(sp?) of soil texture in rank.
From what I read about dust storms in Utah, it was both silty clay and
clay loam. This means people,caught in dust storms there, must have gotten
so powdered! It was reported that some people got hit by hot sand particles
air-transported by a dust storm, as if it was hot charcoal bits.
2) Soil Temperature:
Does the bare soil ground increase or stay the same from solar radiation?
The three places' soil temperature are mesic. In other words, is the soil
temperature colder than the air temperature? For instance, the 36-inch
topsoil in Wyoming was frozen, making it impossible to dig. The temperature
was then around 30-15 fahreint (sp?)
3) How much rain is needed to water and hold dust down on bare soil lacking
natural vegetation? 1 inch? How long would it take to dry again after a
rainy day?
4) Which soil texture dries up fastest? Cracks the most under heat waves?
5) Rock Outcrop Phase: I need a definition for this soil classification.
The Idaho site is so much dominated by rock outcrop phase. Know any good
references?
6) Where to obtain the following soil survey?
Soil Survey Bulletin, Number 38, Series 1927, Wyoming, published by the
United States Department of Agriculture (USDA). I checked my university
library but they only had it up to 1922! Does anyone know the call number?
Thanks for bearing with me. Please feel free to give me feedback. Cheers,
Newby
Soil Series/State/Common Names/Texture/Soil Textural Classes
Apron/Wyoming/Loamy Soils/Moderately Course/Sandy Loam
Copeman/Wyoming/Loamy soils/Moderately Fine/Sandy Clay Loam
Haverdad/Wyoming/Loamy soils/Medium/Loam
Kishona/Wyoming/Loamy Soils/Medium/Loam
Barrymore/Idaho/Loamy Soils/Medium/Silt Loam
Starbuck/Idaho/Loamy Soils/Medium/Silt Loam
Power/Idaho/Loamy Soils/Medium/Silt Loam
Owinza/Idaho/Loamy Soils/Medium/Silt Loam
Abbott/Utah/Clayey Soils/Fine/Silty Clay
Abraham/Utah/Clayey Soils/Fine/Silty Clay
Anco/Utah/Loamy Soils/Moderately Fine/Clay Loam
Books Consulted:
Berger's SUN,SOIL AND SURVIVAL (1972)
Brady's THE NATURE AND PROPERTIES OF SOILS (1984)
------------------------------
End of SOILS-L Digest - 28 Jul 1997 to 31 Jul 1997
**************************************************
Date: Sat, 02 Aug 1997 00:02:25 -0600
From: Automatic digest processor (LISTSERV@crcvms.unl.edu)
Subject: SOILS-L Digest - 31 Jul 1997 to 1 Aug 1997
There are 2 messages totalling 75 lines in this issue.
Topics of the day:
1. Data transformation
2. Data transformation & Burr Foster Q Test
----------------------------------------------------------------------
Date: Fri, 1 Aug 1997 12:00:19 -0400
From: Peter Woodbury (pbw1@CORNELL.EDU)
Subject: Re: Data transformation
I'm not a statistician, but have analysed numerous sets of "percent" type
data. A recommended transformation is the arc/sine square root, it is
described in Snedecor and Cochran and other statistical texts. The problem
with percent data is that they are constrained by 0 and 100. Sometimes, you
can use count data instead. If your data are all in the middle range of
percents, above 30 and below 70 (or so, see a statistical text) you may not
need to transform them at all. In my opinion, count data are preferable to
percents, if you can arrange it.
Good luck,
Peter
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Peter Woodbury
Senior Research Specialist
Boyce Thompson Institute for Plant Research
Tower Road, Ithaca, NY 14853-1801
voice (607) 254-1216 fax (607) 254-1242
email pbw1@cornell.edu
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
------------------------------
Date: Fri, 1 Aug 1997 20:01:54 -0700
From: Richard Chinn (info@ENVTECHCENTER.COM)
Subject: Re: Data transformation & Burr Foster Q Test
Clara Marti wrote:
)
) Dear group,
)
) I'm working on data refered on the soil hidric content. My question is: may
) I have to transform my data (expressed as g of water /100 g dry soil) to
) make an ANOVA analysis?.Altthough they are distributed normaly?
) I would appreciate very much any comments and suggestions.
) Thank you for your time
) Clara
Clara,
Analysis of variance requires two assumptions; homogeneity of variance
and normality of data. If your data are normally distributed, you may
still have to transform the data to satisfy the homogeneity of variance
requirement.
As I recall, the Burr-Foster Q Test does a fine job of testing for
homogeneity. Unfortunately, I have been out of school for a long time
and no longer have the formula.
Perhaps one of the other Soils-L listservers would be so kind as to
provide it.
Richard
--
Richard Chinn
Environmental Technology Center
8413 Laurel Fair Circle, Suite 200
Tampa, FL 33610-7355
Phone: 813.621.8848
Fax: 813.621.0153
Email: info@envtechcenter.com
Web: http://envtechcenter.com
------------------------------
End of SOILS-L Digest - 31 Jul 1997 to 1 Aug 1997
*************************************************
Date: Wed, 06 Aug 1997 00:01:08 -0600
From: Automatic digest processor (LISTSERV@crcvms.unl.edu)
Subject: SOILS-L Digest - 1 Aug 1997 to 5 Aug 1997
There is one message totalling 14 lines in this issue.
Topics of the day:
1. Data transformation
----------------------------------------------------------------------
Date: Tue, 5 Aug 1997 09:04:48 +0200
From: Clara Marti (cmarti@POSTA.UNIZAR.ES)
Subject: Re: Data transformation
Dear Peter,
Thank you very much for your explanation
Best wishes
Clara
------------------------------
End of SOILS-L Digest - 1 Aug 1997 to 5 Aug 1997
************************************************
Date: Sun, 10 Aug 1997 00:01:10 -0600
From: Automatic digest processor (LISTSERV@crcvms.unl.edu)
Subject: SOILS-L Digest - 5 Aug 1997 to 9 Aug 1997
There is one message totalling 27 lines in this issue.
Topics of the day:
1. Soil map
----------------------------------------------------------------------
Date: Sat, 9 Aug 1997 10:30:35 +0200
From: Clara Marti (cmarti@POSTA.UNIZAR.ES)
Subject: Soil map
Dear group,
We are trying to make a soil map following the FAO legend, but we have some
problems:
When a soil is developed on a terrace made by the man is it allways an
ANTROSOL?, can this kind of soils have a mollic epipedion or calcic
endopedion? or they never have more than ochric epipedion?
If it has a mollic epipedion is it a Phaeozem in spite is not as "natural"
becausae the terrace?
When we have a soil with an heterogenity of organic matter content to 125
cm depth can we say that we have a Fluvisol? or it have to show diferent
diposit layers?
If this soil dosen't has recent apports of fluvic material is it still a
Fluvisol?
How I can classify a soil developed on an ancient river terrace?
Thank you very much for your help
Clara
------------------------------
End of SOILS-L Digest - 5 Aug 1997 to 9 Aug 1997
************************************************
Date: Thu, 14 Aug 1997 00:01:12 -0600
From: Automatic digest processor (LISTSERV@crcvms.unl.edu)
Subject: SOILS-L Digest - 9 Aug 1997 to 13 Aug 1997
There is one message totalling 32 lines in this issue.
Topics of the day:
1. Introduction and a non-academic question
----------------------------------------------------------------------
Date: Wed, 13 Aug 1997 12:39:53 +0100
From: Zhang Yusheng (Y.S.Zhang@EXETER.AC.UK)
Subject: Introduction and a non-academic question
Hello, everyone,
My name is Zhang Yusheng and a research fellow in the Department of Geography,
University of Exeter, England for the time being. My main interests are soil
erosion, GIS application in soil science, tillage erosion.
Here is my first non-academic question. Our research project need a manual soil
cone penetrometer which has standardised cones and rods. The ideal one should
have 12.8 mm diameter cone and 9.5 rod. Could anyone please tell me where I may
find more information about possible suppliers, especially those in UK.
I understand that advertisement in such academic list is forbiden. Therefore,
could you please reply to me directly if you could help me anyway.
Thanks a lot.
-------------------------------------------------------------------------
Zhang Yusheng
Department of Geography Tel: +00 44 (0)1392 423564 (home)
University of Exeter Email: Y.S.Zhang@ex.ac.uk
Rennes Drive, Amory Building http://www.ex.ac.uk/~yszhang/welcome.htm
Exeter, EX4 4RJ, UK
-------------------------------------------------------------------------
------------------------------
End of SOILS-L Digest - 9 Aug 1997 to 13 Aug 1997
*************************************************
Date: Thu, 28 Aug 1997 00:04:12 -0600
From: Automatic digest processor (LISTSERV@crcvms.unl.edu)
Subject: SOILS-L Digest - 13 Aug 1997 to 27 Aug 1997
There are 3 messages totalling 70 lines in this issue.
Topics of the day:
1. Waste & Remediation Software? -Reply (2)
2. Waste & Remediation Software?
----------------------------------------------------------------------
Date: Wed, 27 Aug 1997 17:49:44 +0930
From: Amir Fotovat (afotovat@WAITE.ADELAIDE.EDU.AU)
Subject: Re: Waste & Remediation Software? -Reply
)
) Please send me a copy of the free software. Thanks
Amir
***************************************************
* Amir Fotovat *
* Soil Science Dept. *
College of Agriculture
* University of Mashhad *
* PO Box 91775-1163 *
Mashhad
IRAN
* Fax: +98 81 815845 *
***************************************************
------------------------------
Date: Wed, 27 Aug 1997 10:58:29 +0000
From: Ali Reza Movahedi Naeini (pev94am@WYE.AC.UK)
Subject: Re: Waste & Remediation Software? -Reply
Hi
please send me a copy.
Thanks
Ali Movahedi
Ali Reza Movahedi Naeini Ph.D Student Wye College
University of London,Wye Near Ashford,Kent TN25 5AH
Phone Office :01233 812401 EXT:391
Phone Hostel :01233 812012 Room Nomber-9
------------------------------
Date: Wed, 27 Aug 1997 12:47:31 +0200
From: Jose Portolatis Arias Rodrigez (arias@UNI-HOHENHEIM.DE)
Subject: Re: Waste & Remediation Software?
Hello
Please send me one Copy from the Software
Thaks you @|@
------------------------(@/\@/\@)---------------------------------
| Jose Portolatin Arias @@||@@ Tel y Fax ++49 -711-4587299 |
| Im Chausseefeld-5 @||@ E-Mail arias@uni-hohenheim.de |
| 70599 Stuttgart http://www.uni-hohenheim.de/~arias/index.html |
-----------------------------/\-----------------------------------
------------------------------
End of SOILS-L Digest - 13 Aug 1997 to 27 Aug 1997
**************************************************
Prepared by Steve Modena, AB4EL
Suggestions and comments to: modena@SunSITE.unc.edu