Soil phosphorus status and P nutrition strategies of European beech forests on carbonate compared to silicate parent material

2022 | journal article. A publication with affiliation to the University of Göttingen.

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​Soil phosphorus status and P nutrition strategies of European beech forests on carbonate compared to silicate parent material​
Prietzel, J.; Krüger, J.; Kaiser, K.; Amelung, W.; Bauke, S. L.; Dippold, M. A. & Kandeler, E. et al.​ (2022) 
Biogeochemistry158(1) pp. 39​-72​.​ DOI: 

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Prietzel, Jörg; Krüger, Jaane; Kaiser, Klaus; Amelung, Wulf; Bauke, Sara L.; Dippold, Michaela A.; Kandeler, Ellen; Klysubun, Wantana; Lewandowski, Hans; Löppmann, Sebastian; Lang, Friederike
Abstract Sustainable forest management requires understanding of ecosystem phosphorus (P) cycling. Lang et al. (2017) [ Biogeochemistry, ] introduced the concept of P-acquiring vs. P-recycling nutrition strategies for European beech ( Fagus sylvatica L. ) forests on silicate parent material, and demonstrated a change from P-acquiring to P-recycling nutrition from P-rich to P-poor sites. The present study extends this silicate rock-based assessment to forest sites with soils formed from carbonate bedrock. For all sites, it presents a large set of general soil and bedrock chemistry data. It thoroughly describes the soil P status and generates a comprehensive concept on forest ecosystem P nutrition covering the majority of Central European forest soils. For this purpose, an Ecosystem P Nutrition Index ( ENI P ) was developed, which enabled the comparison of forest P nutrition strategies at the carbonate sites in our study among each other and also with those of the silicate sites investigated by Lang et al. (2017). The P status of forest soils on carbonate substrates was characterized by low soil P stocks and a large fraction of organic Ca-bound P (probably largely Ca phytate) during early stages of pedogenesis. Soil P stocks, particularly those in the mineral soil and of inorganic P forms, including Al- and Fe-bound P, became more abundant with progressing pedogenesis and accumulation of carbonate rock dissolution residue. Phosphorus-rich impure, silicate-enriched carbonate bedrock promoted the accumulation of dissolution residue and supported larger soil P stocks, mainly bound to Fe and Al minerals. In carbonate-derived soils, only low P amounts were bioavailable during early stages of pedogenesis, and, similar to P-poor silicate sites, P nutrition of beech forests depended on tight (re)cycling of P bound in forest floor soil organic matter (SOM). In contrast to P-poor silicate sites, where the ecosystem P nutrition strategy is direct biotic recycling of SOM-bound organic P, recycling during early stages of pedogenesis on carbonate substrates also involves the dissolution of stable Ca-P org precipitates formed from phosphate released during SOM decomposition. In contrast to silicate sites, progressing pedogenesis and accumulation of P-enriched carbonate bedrock dissolution residue at the carbonate sites promote again P-acquiring mechanisms for ecosystem P nutrition.
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Fakultät für Forstwissenschaften und Waldökologie ; Büsgen-Institut ; Abteilung Forstbotanik und Baumphysiologie 



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