Zobrazeno 1 - 10
of 33
pro vyhledávání: '"R. David Hammer"'
Autor:
Mark Johnson, Richard A. Ferguson, Joey N. Shaw, Julie Arriaga, John M. Galbraith, Toby O’Geen, A. L. Falen, R. David Hammer, Randy Miles, Cynthia A. Stiles, Paul A. McDaniel
Publikováno v:
Soil Science Society of America Journal. 75:2330-2340
Increasing demands exist for information about properties related to soil quality and human-induced soil change, particularly soil C. To help address this need, the USDA-NRCS Soil Survey Laboratory (SSL) developed a portable kit for rapid and relativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23d4d3c216fc03edefab2fb215c0af43
https://doi.org/10.2136/sssaj2010.0350
https://doi.org/10.2136/sssaj2010.0350
Autor:
R. David Hammer
Publikováno v:
Northwest Science. 84:302-306
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae4ba3ad615ac54aa6b12d02b6328786
https://doi.org/10.3955/046.084.0310
https://doi.org/10.3955/046.084.0310
Autor:
G. W. Petersen, James C. Bell, R. David Hammer, Kevin McSweeney, Brian K. Slater, Paul E. Gessler
Publikováno v:
Factors of Soil Formation: A Fiftieth Anniversary Retrospective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad7d92485dbd413b1c2bc728b48d57af
https://doi.org/10.2136/sssaspecpub33.c8
https://doi.org/10.2136/sssaspecpub33.c8
Publikováno v:
Spatial Variabilities of Soils and Landforms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce00d93e74f07e4548f8e54936cae76c
https://doi.org/10.2136/sssaspecpub28.c15
https://doi.org/10.2136/sssaspecpub28.c15
Publikováno v:
Spatial Variabilities of Soils and Landforms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e864cbcd9feeaffcdadb10ad28143d8
https://doi.org/10.2136/sssaspecpub28.c13
https://doi.org/10.2136/sssaspecpub28.c13
Publikováno v:
Revue des sciences de l'eau. 19:137-149
Comparisons of runoff and sediment loss from row-crop with and without riparian buffers, pasture and grass filter strips are limited. Effects of precipitation, landuse and buffer condition on runoff and sediment loss were examined from 1997 to 1999 i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::865da2107dbcd4025f1ebc387d3dcf1c
https://doi.org/10.7202/013047ar
https://doi.org/10.7202/013047ar
Publikováno v:
Journal of Plant Nutrition and Soil Science. 166:708-711
Shallow soil A horizon (topsoil) caused by soil erosion and soil movement from cultivation is known to reduce soil and crop productivity. The reduction may be related to limitation of root growth. A field study was conducted to investigate the effect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0975c52fdf534d1624bbdcc434906f1d
https://doi.org/10.1002/jpln.200321193
https://doi.org/10.1002/jpln.200321193
Publikováno v:
Soil Science Society of America Journal. 64:1834-1845
Estimates of C storage in mountainous regions are rare. Forest–meadow ecotones in subalpine ecosystems, which contain a mosaic of forests and meadows, may be particularly sensitive to future changes in climate and are therefore important to include
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fd3be183379418bc8345ee81de714df
https://doi.org/10.2136/sssaj2000.6451834x
https://doi.org/10.2136/sssaj2000.6451834x
Publikováno v:
Soil Science Society of America Journal. 62:1640-1646
Users are demanding that soil surveys contain statistical information about soil and map unit properties. Numerous sampling and statistical methodologies are available, but statistical methods should be appropriate for both sampling methods and data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0680c70b33bfb02ba84659d19dacc3c4
https://doi.org/10.2136/sssaj1998.03615995006200060022x
https://doi.org/10.2136/sssaj1998.03615995006200060022x
Publikováno v:
Soil Science Society of America Journal. 61:854-861
We are concerned with the documentation of taxonomic variability within soil survey map units, and how that variability is expressed statistically. Twelve randomly selected transects were used to sample soil properties and classify pedons within a fl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa2655eb76707b4d781a48dd31961d61
https://doi.org/10.2136/sssaj1997.03615995006100030020x
https://doi.org/10.2136/sssaj1997.03615995006100030020x