Zobrazeno 1 - 10
of 280
pro vyhledávání: '"R. Well"'
Autor:
B. Grosz, A. Matson, K. Butterbach‐Bahl, T. Clough, E. A. Davidson, R. Dechow, S. DelGrosso, E. Diamantopoulos, P. Dörsch, E. Haas, H. He, C. V. Henri, D. Hui, K. Kleineidam, D. Kraus, M. Kuhnert, J. Léonard, C. Müller, S. O. Petersen, D. Sihi, I. Vogeler, R. Well, J. Yeluripati, J. Zhang, C. Scheer
Publikováno v:
AGU Advances, Vol 4, Iss 6, Pp n/a-n/a (2023)
Abstract Biogeochemical models simulate soil nitrogen (N) turnover and are often used to assess N losses through denitrification. Though models simulate a complete N budget, often only a subset of N pools/fluxes (i.e., N2O, NO3−, NH3, NOx) are publ
Externí odkaz:
https://doaj.org/article/dbb2856a859c44248ccd0fe98caf9fca
Autor:
B. Grosz, R. Well, R. Dechow, J. R. Köster, M. I. Khalil, S. Merl, A. Rode, B. Ziehmer, A. Matson, H. He
Publikováno v:
Biogeosciences, Vol 18, Pp 5681-5697 (2021)
Biogeochemical models are essential for the prediction and management of nitrogen (N) cycling in agroecosystems, but the accuracy of the denitrification and decomposition sub-modules is critical. Current models were developed before suitable soil N2
Externí odkaz:
https://doaj.org/article/bf16bbd1835642fda87e05783a805d54
Publikováno v:
Biogeosciences, Vol 18, Pp 4629-4650 (2021)
The coexistence of many N2O production pathways in soil hampers differentiation of microbial pathways. The question of whether fungi are significant contributors to soil emissions of the greenhouse gas nitrous oxide (N2O) from denitrification has not
Externí odkaz:
https://doaj.org/article/e0a53d210c9c47688b94e5ba67684670
Publikováno v:
Biogeosciences, Vol 18, Pp 1185-1201 (2021)
The prediction of nitrous oxide (N2O) and of dinitrogen (N2) emissions formed by biotic denitrification in soil is notoriously difficult due to challenges in capturing co-occurring processes at microscopic scales. N2O production and reduction depend
Externí odkaz:
https://doaj.org/article/9040e63aa71f4e79b4cfdc8d5e697c5c
Publikováno v:
Biogeosciences, Vol 17, Pp 5513-5537 (2020)
The approaches based on natural abundance N2O stable isotopes are often applied for the estimation of mixing proportions between various N2O-producing pathways as well as for estimation of the extent of N2O reduction to N2. But such applications are
Externí odkaz:
https://doaj.org/article/7df557505b5142218a6ab4acbebd06d3
Autor:
D. Lewicka-Szczebak, R. Well
Publikováno v:
SOIL, Vol 6, Pp 145-152 (2020)
The 15N gas-flux method allows for the quantification of N2 flux and tracing soil N transformations. An important requirement for this method is a homogeneous distribution of the 15N tracer added to soil. This is usually achieved through soil homogen
Externí odkaz:
https://doaj.org/article/ce2a880ef59d4ea49919b4a5af6fc38b
Publikováno v:
Biogeosciences, Vol 17, Pp 1181-1198 (2020)
Chemical composition of root and shoot litter controls decomposition and, subsequently, C availability for biological nitrogen transformation processes in soils. While aboveground plant residues have been proven to increase N2O emissions, studies on
Externí odkaz:
https://doaj.org/article/1f166f0561874662a4a0d9f945f065f4
Publikováno v:
Biogeosciences, Vol 16, Pp 2233-2246 (2019)
Common methods for measuring soil denitrification in situ include monitoring the accumulation of 15N-labelled N2 and N2O evolved from 15N-labelled soil nitrate pool in closed chambers that are placed on the soil surface. Gas diffusion is considered t
Externí odkaz:
https://doaj.org/article/aa1c431618c4482893f0cced07d718a0
Autor:
L. M. Cardenas, R. Bol, D. Lewicka-Szczebak, A. S. Gregory, G. P. Matthews, W. R. Whalley, T. H. Misselbrook, D. Scholefield, R. Well
Publikováno v:
Biogeosciences, Vol 14, Pp 4691-4710 (2017)
Nitrous oxide (N2O) is of major importance as a greenhouse gas and precursor of ozone (O3) destruction in the stratosphere mostly produced in soils. The soil-emitted N2O is generally predominantly derived from denitrification and, to a smaller ext
Externí odkaz:
https://doaj.org/article/45a133f23a584f1f9ac5f4c87ed8e43a
Publikováno v:
Biogeosciences, Vol 14, Iss 3, Pp 711-732 (2017)
Stable isotopic analyses of soil-emitted N2O (δ15Nbulk, δ18O and δ15Nsp = 15N site preference within the linear N2O molecule) may help to quantify N2O reduction to N2, an important but rarely quantified process in the soil nitrogen cycle. The N2O
Externí odkaz:
https://doaj.org/article/bb2f141bc7f14431960d4e2a06c7e843