Zobrazeno 1 - 10 of 39 pro vyhledávání: '"P.J.A. Howard"'
1
Analysis of inter-sample distances from BIOLOG plate data in Euclidean and simplex spaces
Autor: P.J.A. Howard
Publikováno v: Soil Biology and Biochemistry. 31:1323-1330
BIOLOG plates have a potential use in quantitative or qualitative comparisons between physiological activities of micro-organisms from different soils or soil horizons. However, the scaling of the data advocated by Garland and Mills (1991) restricts
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23537ecd630564f857c028ebc39da4b9
https://doi.org/10.1016/s0038-0717(99)00055-3
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2
Effects of tree species and soil physico-chemical conditions on the nature of soil organic matter
Autor: D. M. Howard, L. E. Lowe, P.J.A. Howard
Publikováno v: Soil Biology and Biochemistry. 30:285-297
Forty-one properties of the organic matter in surface soil samples collected under oak (intermediate between Quercus petraea and Q. robur ) and yew ( Taxus baccata ) growing on soils overlying slate and limestone in N.W. England were studied using an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2023d456b002de9cab74b61ecacf55e
https://doi.org/10.1016/s0038-0717(97)00138-7
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3
A Markov Model Projection of Soil Organic Carbon Stores Following Land Use Changes
Autor: P.J.A. Howard, D. M. Howard, David Howard
Publikováno v: Journal of Environmental Management. 45:287-302
Soils are major sinks of carbon, and land use can affect the magnitudes of soil organic carbon stores and the net flux of carbon between the land and atmosphere. Hence, it is of some interest to have a method for examining the future consequences of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6b2be1a89d24fb5d3c8fc0130add516a
https://doi.org/10.1006/jema.1995.0076
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4
The carbon content of soil and its geographical distribution in Great Britain
Autor: David Howard, P.J. Loveland, F.T. Dry, R. I. Bradley, D. M. Howard, P.J.A. Howard
Publikováno v: Soil Use and Management. 11:9-15
England and Wales have 155 314 1 x 1 km squares, of which 140 049 have more than 50% soil cover. The total soil organic carbon content, based on the dominant soil series and dominant land cover type, is estimated to be 2773 x 10(6) t C. Scotland has
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5b9cfc0392c72ddeb2e00ca4a660b3ae
https://doi.org/10.1111/j.1475-2743.1995.tb00488.x
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6
Relationships between co2 evolution, moisture content and temperature for a range of soil types
Autor: P.J.A. howard, D. M. Howard
Publikováno v: Soil Biology and Biochemistry. 25:1537-1546
Soils were collected from two locations at six sites on each of eight soil types. After sieving, soil CO2 evolution was measured at three moisture contents and at 5, 10, 15 and 20°C. Our objectives were to (i) establish a regression model for the re
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::479eb18d69014fb6be4350012d1121ae
https://doi.org/10.1016/0038-0717(93)90008-y
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7
Ammonification of complexes prepared from gelatin and aqueous extracts of leaves and freshly-fallen litter of trees on different soil types
Autor: D. M. Howard, P.J.A. Howard
Publikováno v: Soil Biology and Biochemistry. 25:1249-1256
The rates of decomposition of polyphenol-gelatin complexes were studied in two sets of experiments. In the first set, ammonification rates of complexes formed from aqueous extracts of green, pre-dehiscent leaves and from aqueous extracts of freshly-f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d3d61c8b5f96ded9234857f21cea53a8
https://doi.org/10.1016/0038-0717(93)90221-v
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8
Soil protection and soil quality assessment in the EC
Autor: P.J.A. Howard
Publikováno v: Science of The Total Environment. 129:219-239
The main threats to soils are: extension of urbanization, acidification, accumulation of pollutants, nitrate in groundwater, loss of organic matter and deteriorating soil structure, soil compaction, and erosion. The latter is especially important in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef4060aa213ad04fc43c356064f2ba88
https://doi.org/10.1016/0048-9697(93)90172-3
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