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Canopy disturbance alters competitive outcomes between two brackish marsh plant species

LandLibrary Resource
Journal Articles & Books
декабря, 2012

The effect of canopy removal, a form of non-lethal disturbance, was assessed for the interaction between two co-occurring American East Coast salt marsh angiosperms, Schoenoplectus americanus (Pers.) Volkart ex Schinz and R. Keller and Distichlis spicata (L.) Greene, in a greenhouse replacement series experiment. In mixture, aboveground production of S.

Changes in soil organic carbon stocks and soil quality: land-use system effects in northern Ethiopia

LandLibrary Resource
Journal Articles & Books
декабря, 2012
Ethiopia

In Tigray, Ethiopia, land degradation is a dominant environmental problem and hence the regional government has undertaken restoration measures on degraded soils since 1991. The present study was aimed to assess the impact of land uses and soil management practices on soil properties, and consequently on soil quality of degraded soils.

Increasing Shrub Use by Livestock in a World with Less Grass

LandLibrary Resource
Journal Articles & Books
декабря, 2012

Much of the world's rangelands are dominated by woody species. Competing land uses and continued encroachment of woody species into non-woody dominated rangelands have reduced grasslands in many parts of the world. Land use conversions to fuel and feed global populations, especially for increasing numbers of middle class people seeking broader, meat-based diets, will certainly continue.

Carbon management of commercial rangelands in Australia: Major pools and fluxes

LandLibrary Resource
Journal Articles & Books
декабря, 2012
Australia

Land-use emissions accompanying biomass loss, change in soil organic carbon (ΔSOC) and decomposing wood-products, were comparable with fossil fuel emissions in the late 20th century. We examine the rates, magnitudes and uncertainties for major carbon (C) fluxes for rangelands due to commercial grazing and climate change in Australia.

Using 137Cs to estimate wind erosion and dust deposition on grassland in Inner Mongolia-selection of a reference site and description of the temporal variability

LandLibrary Resource
Journal Articles & Books
декабря, 2012

AIMS: The aims of this study were to identify areas of wind erosion and dust deposition and to quantify the effects of different grazing intensities on soil redistribution rates in grasslands based on the 137Cs technique.

Contribution of cork oak plantations installed after 1990 in Portugal to the Kyoto commitments and to the landowners economy

LandLibrary Resource
Journal Articles & Books
декабря, 2012
Portugal

Cork oak stands are a part of the agroforestry ecosystem in Portugal, characterized by a low crown cover from cork oak trees, managed towards cork production, and sometimes in combination with grazing.

Interactions between elevated atmospheric CO2 and defoliation on North American rangeland plant species at low and high N availability

LandLibrary Resource
Journal Articles & Books
декабря, 2012
United States of America

Although common disturbances of grazing lands like plant defoliation are expected to affect their sensitivity to increasing atmospheric CO2 concentration, almost no research has been conducted to evaluate how important such effects might be on the direct responses of rangelands to CO2.