Zobrazeno 1 - 10 of 124 pro vyhledávání: '"Gerhard Welp"'
1
Akademický článek
Total and Hot-Water Extractable Organic Carbon and Nitrogen in Organic Soil Amendments: Their Prediction Using Portable Mid-Infrared Spectroscopy with Support Vector Machines
Autor: Ralf Wehrle, Gerhard Welp, Stefan Pätzold
Publikováno v: Agronomy, Vol 11, Iss 4, p 659 (2021)
Against the background of climate change mitigation, organic amendments (OA) may contribute to store carbon (C) in soils, given that the OA provide a sufficient stability and resistance to degradation. In terms of the evaluation of OA behavior in soi
Externí odkaz: https://doaj.org/article/2157ee2d6e8b4ea6996476b93359bd85
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3
Akademický článek
High Resolution Mapping of Soil Properties Using Remote Sensing Variables in South-Western Burkina Faso: A Comparison of Machine Learning and Multiple Linear Regression Models.
Autor: Gerald Forkuor, Ozias K L Hounkpatin, Gerhard Welp, Michael Thiel
Publikováno v: PLoS ONE, Vol 12, Iss 1, p e0170478 (2017)
Accurate and detailed spatial soil information is essential for environmental modelling, risk assessment and decision making. The use of Remote Sensing data as secondary sources of information in digital soil mapping has been found to be cost effecti
Externí odkaz: https://doaj.org/article/c947790b4a114b768cd32e38c8d75c66
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5
Linking weed patterns with soil properties: a long-term case study
Autor: Gerhard Welp, Dominik Dicke, Roland Gerhards, Stefan Pätzold, Christine Hbirkou
Publikováno v: Precision Agriculture. 21:569-588
The spatial distribution and density of different weed species were monitored during a long-term survey over a period of 9 years on a 5.8 ha arable field and related to soil properties. Weed seedlings were determined every year in spring on a regular
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e6812656418dbc18f6ffc26081b4ea43
https://doi.org/10.1007/s11119-019-09682-6
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7
Total and Hot-Water Extractable Organic Carbon and Nitrogen in Organic Soil Amendments: Their Prediction Using Portable Mid-Infrared Spectroscopy with Support Vector Machines
Autor: Stefan Pätzold, Ralf Wehrle, Gerhard Welp
Publikováno v: Agronomy, Vol 11, Iss 659, p 659 (2021)
Agronomy
Volume 11
Issue 4
Against the background of climate change mitigation, organic amendments (OA) may contribute to store carbon (C) in soils, given that the OA provide a sufficient stability and resistance to degradation. In terms of the evaluation of OA behavior in soi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5778293176f585d36c58d91ff27587c9
https://www.mdpi.com/2073-4395/11/4/659
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8
A comprehensive dataset of vegetation states, fluxes of matter and energy, weather, agricultural management, and soil properties from intensively monitored crop sites in Western Germany
Autor: Alexander Graf, Marius Schmidt, Anja Stadler, Karl Schneider, W. Korres, Gerhard Welp, Nele Meyer, Cosimo Brogi, Tim G. Reichenau
Publikováno v: Earth system science data 12(4), 2333-2364 (2020). doi:10.5194/essd-12-2333-2020
Earth System Science Data, Vol 12, Pp 2333-2364 (2020)
The development and validation of hydroecological land-surface models to simulate agricultural areas require extensive data on weather, soil properties, agricultural management, and vegetation states and fluxes. However, these comprehensive data are
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46c96ac57ce896bae5aa522226871e37
https://doi.org/10.5194/essd-2019-193
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9
Replicability of aggregate disruption by sonication—an inter‐laboratory test using three different soils from Germany
Autor: Marion Schrumpf, Markus Graf-Rosenfellner, Thilo Rennert, Klaus Kaiser, Gilles Kayser, Carsten W. Mueller, Georg Guggenberger, Michael Kaiser, Frederik Büks, Gerhard Welp, Friederike Lang
Publikováno v: Journal of Plant Nutrition and Soil Science. 181:894-904
Sonication is widely used for disruption of suspended soil aggregates. Calorimetric calibration allows for determining sonication power and applied energy as a measure for aggregate disrupting forces. Yet other properties of sonication devices (e.g.,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0270e5748450e14e099135d5bad048c3
https://doi.org/10.1002/jpln.201800152
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10
Soil respiration and its temperature sensitivity (Q10): Rapid acquisition using mid-infrared spectroscopy
Autor: Wulf Amelung, Nele Meyer, Hanna Meyer, Gerhard Welp
Publikováno v: Geoderma. 323:31-40
Spatial patterns of soil respiration (SR) and its sensitivity to temperature (Q10) are one of the key uncertainties in climate change research but since their assessment is very time-consuming, large data sets can still not be provided. Here, we inve
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::892539de3fb592988266326d9b85a96c
https://doi.org/10.1016/j.geoderma.2018.02.031
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