Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"N mineralisation"”.
-
Impact of pine plantations on the form and mobility of nitrogen in soils of the eastern escarpment region of South Africa
… for KCI-extractable NO₃- and NH₄+ analyses and N mineralisation experiments. The remaining analyses were performed on the air-dried samples. This study included two facets: physical and chemical characterisation of soil samples; and a series of laboratory experiments. The solid phase of the soils …
-
Turnover and fluxes of carbon and nitrogen in a spruce forest under natural and extreme meteorological conditions
… layer and upper mineral horizon reduced net N mineralisation as well as concentrations and fluxes of the NH4+ and NO3-. The net nitrification rate in the organic layer was more negatively influenced than net ammonification, indicating that nitrifiers are more sensitive to drought stress than …
-
Nutrient dynamics and their control in land use systems of forest margins in Central Sulawesi, Indonesia
… bestätigt. Agroforstsysteme hatten höhere N-Mineralisation, NH4+-Aufnahme und schnelleren N-Umsatz als die Maisflächen.Trockenraumdichte und Basensättigung auf umgewandelten Flächen waren höher als im ungestörten Naturwald. Bei andauerndem Maisanbau stieg die Trockenraumdichte, während sie im …
-
Development and Application of a Classification System for Undisturbed and Disturbed Tropical Montane Forests Based on Vegetation Structure
… stress in wind exposed sites and unfavourable N-mineralisation conditions (due to decreasing pH, profile depth, raising C/N-values, and water stagnation with increasing altitude). Secondary forest types were characterised by human influence (felling of emergent trees), pioneer vegetation and …
-
Structure and function of western red cedar and western hemlock forests on northern Vancouver Island
… the cause(s) of differences in rates of nutrient mineralisation between the two types. It was hypothesised that nutritional differences may have been due to: (i) regular windthrow in the HA type, (ii) a greater accumulation of forest floor organic matter in the CH type, which may lead to …