Elsevier | Page 153 | Land Portal

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Library Resource
Artículos de revistas y libros
Diciembre, 2009

Improper cropping and overgrazing have led to land degradation in semi-arid regions, resulting in desertification. During desertification, vegetation changes have been widely observed, and are likely controlled to some extent by soil water. The purpose of this study was to investigate changes in soil physical properties, organic C, and vegetation induced by land-use changes, with special reference to the dynamics of available soil water.

Library Resource
Artículos de revistas y libros
Diciembre, 2009
Etiopía

Land degradation is not uniform, even in the same landscape, but nevertheless an overall consensus seems to grow on the fact that many areas are under way of rehabilitation. It is a debateable question whether the improving areas are improving because of interventions--or whether this has more to do with processes of innovation and adaptation.

Library Resource
Artículos de revistas y libros
Diciembre, 2009
Etiopía

A collection of sepia photographs, taken during Great Britain's military expedition to Abyssinia in 1868, are the oldest landscape photographs from northern Ethiopia, and have been used to compare the status of vegetation and land management 140 years ago with that of contemporary times. Thirteen repeat landscape photographs, taken during the dry seasons of 1868 and 2008, were analyzed for various environmental indicators and show a significant improvement of vegetation cover.

Library Resource
Artículos de revistas y libros
Diciembre, 2009

Much has been written about a supposed shift 'from government to governance' in many policy areas, including forest policy. However, the idea remains very much at the level of hypothesis as few empirical studies have confirmed the transition. Part of the problem is the multi-dimensional character of governance itself, which includes traditional 'government' as one of many possible governance modes.

Library Resource
Artículos de revistas y libros
Diciembre, 2009

Stands of quaking aspen (Populus tremuloides) rank among the most biologically diverse plant communities across the intermountain region of western North America. Marked declines of aspen have occurred in recent decades, likely due to a combination of effects from changes in fire regimes, herbivory, climate (e.g. drought), and interspecific competition with conifer species. However, it is poorly understood how the effects of these factors are manifested at a landscape scale over decadal time periods.

Library Resource
Artículos de revistas y libros
Diciembre, 2009

This paper examines the past, present, and future use of the concept of historical range and variability (HRV) in land management. The history, central concepts, benefits, and limitations of HRV are presented along with a discussion on the value of HRV in a changing world with rapid climate warming, exotic species invasions, and increased land development. This paper is meant as a reference on the strengths and limitations of applying HRV in land management.

Library Resource
Artículos de revistas y libros
Diciembre, 2009
República de Corea

Throughout the history of the world, the best-orchestrated and publicly cohesive reforestation event occurred in South Korea. One of the best-known causes for such a success was the leadership of the government at that time, in particular the president Park Chung Hee. However, from forestry point of view, it evolved from Songgye, a traditional method of forest management evolved in late Choson Dynasty of Korea in reaction to rapid privatization of national forests by the elite class and government officials.

Library Resource
Artículos de revistas y libros
Diciembre, 2008
Costa Rica

Remnant trees have been widely reported to facilitate tropical forest recovery, however, few restoration strategies can mimic the role such trees play in their absence. This study evaluated the establishment success and growth of planting oversized vegetative 'stakes' (>4m tall) of three species: Ficus pertusa (Moraceae), Bursera simaruba (Burseraceae), and Erythrina poeppigiana (Fabaceae) at three different sites in southern Costa Rica. I found high establishment rates for all species (range 67-100%) with no mortality for Erythrina.

Library Resource
Artículos de revistas y libros
Diciembre, 2008

When trees are planted onto former pastures, soil carbon stocks typically either remain constant or decrease, with decreases more common in regions with higher rainfall. We conducted a modelling analysis to assess whether those changes in soil carbon, especially the interaction with rainfall, could be understood through consideration of nitrogen balances. The study was based on simulations with the whole-system ecophysiological model CenW which allowed explicit modelling of both carbon and nitrogen pools and their fluxes through plants and soil organic matter.

Library Resource
Artículos de revistas y libros
Diciembre, 2008
Argentina

In South Patagonia, Argentina, sweet cherry is the main fruit-tree crop grown for export, resulting in a highly seasonal labour demand. Managers of deciduous perennial fruit orchards must consider both biological and economic relationships in selecting crop species and orchard design. This makes decisions at the farm-level extremely complex, as especially in such perennial crops, strategic ('what to plant', 'with which technology' and 'how much area of each activity', i.e.

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