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Ploughing a poorly drained grassland reduced N₂O emissions compared to chemical fallow

Journal Articles & Books
December, 2011

Managed grasslands occupy a large portion of the agricultural landbase, are rich in C and N and therefore represent a risk for emissions of N₂O during landuse change. Two adjacent grassland plots, one amended with 100m³ ha⁻¹ of liquid swine manure annually since 1978 and an unamended grassland were either (i) left with vegetation intact (Control) or killed by glyphosate in the autumn. Glyphosate-treated subplots were either (ii) left as an undisturbed chemical fallow, (iii) ploughed by full inversion tillage (FIT) in the autumn, or (iv) in the spring.

AN EMPIRICAL ASSESSMENT OF CONVERGENT VALIDITY OF BENEFIT TRANSFER IN CONTINGENT CHOICE: INTRODUCTORY APPLICATIONS WITH NEW CRITERIA

Conference Papers & Reports
December, 2004

Benefit transfer has been an important, practical policy tool appealing to government agencies, especially when time or budget is constrained. However, the existing literature fails to support convergent validity of benefit transfer using the stated-preference method. This empirical study examines the convergent validity of benefit transfer using the choice modeling method, a potentially promising technique compatible with the heterogeneity of the transfer contexts.

Interactions between ecological and social drivers in determining and managing biodiversity impacts of deer

Journal Articles & Books
December, 2013

The management of wildlife and its impacts on biodiversity is likely to be most successful where ecological understanding is integrated with the economic and social drivers for management, and where the attitudes and behaviour of stakeholders are fully understood. Collaboration between stakeholders at the landscape level is suggested as the most efficient ‘model’ for the management of many wildlife species such as deer. However, there has been limited research to evaluate the effectiveness of collaborative management for deer or how it is perceived by individual landowners.

Field Validation of DNDC Model for Methane and Nitrous Oxide Emissions from Rice-based Production Systems of India

Journal Articles & Books
December, 2006
India

The DNDC (DeNitrification and DeComposition) model was tested against experimental data on CH₄ and N₂O emissions from rice fields at different geographical locations in India. There was a good agreement between the simulated and observed values of CH₄ and N₂O emissions. The difference between observed and simulated CH₄ emissions in all sites ranged from −11.6 to 62.5 kg C ha⁻¹ season⁻¹. Most discrepancies between simulated and observed seasonal fluxes were less than 20% of the field estimate of the seasonal flux.

Estimating Fuel Consumption for the Upper Coastal Plain of South Carolina

Journal Articles & Books
December, 2010

Recent changes in air quality regulations present a potential obstacle to continued use of prescribed fire as a land management tool. Lowering of the acceptable daily concentration of particulate matter from 65 to 35 μg/m3 will bring much closer scrutiny of prescribed burning practices from the air quality community. To work within this narrow window, land managers need simple tools to allow them to estimate their potential emissions and examine trade-offs between continued use of prescribed fire and other means of fuels management.

Long-term functioning of a species-rich mountain meadow under different management regimes

Journal Articles & Books
December, 2009

The aim of this study is to assess the effect of different management practices on mountain meadow plant biomass, species richness and diversity. The experiment was carried out in the Bohemian Forest Mts. at the altitude of 1150-1170m for 10 years. We applied three treatments (mowing, mulching - i.e., cutting and crushing of the sward into small pieces which are left at the site to decompose, abandonment - fallow) to a mountain meadow with dominant Deschampsia cespitosa, Agrostis capillaris, Festuca rubra and Hypericum maculatum.

Effects of Hydrology and Field Management on Phosphorus Transport in Surface Runoff

Journal Articles & Books
December, 2009

Phosphorus (P) losses from agricultural landscapes arise from the interaction of hydrologic, edaphic, and management factors, complicated by their spatial and temporal variability. We monitored sites along two agricultural hillslopes to assess the effects of field management and hydrology on P transfers in surface runoff at different landscape positions.

Discriminating the effects of agricultural land management practices on soil fungal communities

Journal Articles & Books
December, 2007

The structure of fungal communities was examined in soil subjected to 5 years of different agricultural land management and tomato production practices. Length heterogeneity polymerase chain reaction (LH-PCR) of fungal rDNA internal transcribed spacer-1 (ITS-1) regions was used to create genomic fingerprints of the soil fungal communities.

Does cultivation influence the content and pattern of soil proteins

Journal Articles & Books
December, 2011
Iran

Proteins comprise one of the largest N inputs to soils. There is, therefore, a need to investigate the factors involved in the inputs and fate of proteins in soil. While land use management is expected to influence the amount and diversity of soil proteins, the responses of protein as a source of mineralizable N to land use changes have not yet been studied. We hypothesized that extractable soil protein could be a sensitive indicator in evaluating the effect of stress in ecosystem.

Evaluation of two soil carbon models using two Kenyan long term experimental datasets

Journal Articles & Books
March, 2007
Kenya
Eastern Africa

RothC and Century are two of the most widely used soil organic matter (SOM) models. However there are few examples of specific parameterisation of these models for environmental conditions in East Africa. The aim of this study was therefore, to evaluate the ability of RothC and the Century to estimate changes in soil organic carbon (SOC) resulting from varying land use/management practices for the climate and soil conditions found in Kenya.