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Soil phosphorus characterisation by 31p nuclear magnetic resonance
Abstract Five New Zealand topsoils, including three sampled under introduced pasture and two in native tussock grasslands, were extracted with 0.5 M NaOH, and the different classes of phosphorusExpand
Modelling nitrous oxide emissions from dairy-grazed pastures
Soil N2O emissions were measured during four seasons from two highly productive grass-clover dairy pastures to assess the influences of soil moisture, temperature, availability of N (NH4+ and NO3–)Expand
A DIRECT EXTRACTION METHOD TO ESTIMATE SOIL MICROBIAL C: EFFECTS OF EXPERIMENTAL VARIABLES AND SOME DIFFERENT CALIBRATION PROCEDURES
TLDR
This fumigation-extraction procedure can provide a rapid, reasonable estimate of microbial biomass-C values in grassland soils, and sonication experiments with organisms indicated that most of the C extracted after fumigating was probably derived from cytoplasmic material. Expand
Soil-atmosphere exchange of nitrous oxide and methane in New Zealand terrestrial ecosystems and their mitigation options: a review
The two non-CO2 greenhouse gases (GHGs) nitrous oxide (N2O) and methane (CH4) comprise 54.8% of total New Zealand emissions. Nitrous oxide is mainly generated from mineral N originating from animalExpand
Phosphorus fractions of a climosequence of soils in New zealand tussock grassland
Abstract The different forms of phosphorus in alkaline extracts of eight New Zealand topsoils, which are members of a climosequence, were characterized by 31 P-nuclear magnetic resonance (NMR). AExpand
Afforestation/reforestation of New Zealand marginal pasture lands by indigenous shrublands: the potential for Kyoto forest sinks
La Nouvelle-Zelande va utiliser les provisions de boisement/reboisement (A/R) de l'article 3.3 du protocole de Kyoto pour compenser les emissions de gaz a effets de serre, pendant la premiere periodeExpand
Land-use change: effects on soil carbon, nitrogen and phosphorus pools and fluxes in three adjacent ecosystems
Abstract Changes in land use can affect soil organic matter contents and fertility and also atmospheric CO 2 concentrations and global warming through soil respiration. We compared total andExpand
Soil surface CO2 flux as an index of soil respiration in situ: A comparison of two chamber methods
Predictions of global climate change have recently focused attention on soils as major sources and sinks for atmospheric CO2, and various methodologies exist for measuring soil surface CO2 flux. AExpand
Organic carbon stocks in New Zealand's terrestrial ecosystems
The organic carbon in New Zealand's vegetation and soils has been estimated for 1992 from updated national databases of vegetative cover and soil carbon. These databases were augmented by inclusionExpand
Effects of Plant Species Diversity and Composition on Nitrogen Cycling and the Trace Gas Balance of Soils
Experiments addressing the role of plant species diversity for ecosystem functioning have recently proliferated. Most studies have focused on plant biomass responses. However, microbial processesExpand
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