This paper examines the effectiveness of European Union (EU) agroforestry programmes in reversing land degradation processes in the Mação region of central Portugal. Since the 1980s, the region has experienced severe forest fires, which have had serious consequences for the local ecosystem in terms of land degradation processes and changes in the hydrological cycle. In an attempt to reverse this situation, agroforestry programmes and aid schemes have been introduced to improve land management practices and increase the forest area and stabilize soil.

Soil variability is often seen as problematic in land degradation studies in terms of sampling effort, data interpretation and for the extrapolation of results to other areas or time periods. Examples are given from land degradation research undertaken in central Spain which demonstrate some of these problems associated with soil variability. Geostatistics is presented as a useful tool for quantifying soil variability and in particular the variogram for interpreting and understanding spatial patterns.

The West Asia–North Africa (WANA) region has a land area of 1.7 billion ha, and a population of 600 million. Desertification and soil degradation are severe problems in the region. The problem of drought stress is exacerbated by low and erratic rainfall and soils of limited available water holding capacity and soil organic carbon (SOC) content of less than 0.5 per cent. The SOC pool of most soils has been depleted by soil degradation and widespread use of subsistence and exploitative farming systems.

Soil degradation and subsequent amelioration were studied on soil chronosequences of old-growth forest, abandoned fields, and young and mature conifer plantations on the Oak Ridges Moraine, an environmentally vulnerable landform near Toronto threatened by encroaching urban development. The chronosequences reflect a history of pre-settlement deforestation, exploitive pioneer agriculture and ensuing land abandonment that led to soil fallowing and/or wind erosion in the 1920s followed by soil stabilization after extensive planting with red pine (Pinus resinosa Ait.).

Europe is characterized not only by large geomorphological variability but also by a long history of land use. This resulted in a highly variegated landscape. Based on the IGBP‐transect initiative, a north south transect was established across Europe ranging from north Sweden to central Italy in order to study effects of global change. Mainly process oriented studies were established on plots along the transect, and these were used to establish functional relationships as basis for landscape integration.

Adverse environmental impacts of human activities are the main causes of soil degradation in the desert of Kuwait in general, and in Kabd area in particular. In this study, assessment of soil degradation in open and protected sites has been carried out using field measurements and laboratory investigations. The overall status of vegetation is nearly twice as low in vegetation cover in the open sites than in the protected ones due to overgrazing and off-road transport.

Amidst growing concerns about farmlands conservation, this paper examines the status of farmlands in two mountain watersheds ‘with’ and ‘without’ external intervention, located in the western hills of Nepal. Information was obtained from a household survey and group discussions conducted during April to September 1999. The severity of soil erosion from farmers' perspectives, density of landslides, soil nutrient balance and change in crop yield have been adopted as indicators of the status of the land.

The Theory of the Second Best implies that any country with less-than-ideal resources can lose from international trade. Recently it has been suggested this means the South (poor countries) are better off suppressing trade with the North, especially trade in natural resource products, since the North has better developed rights to protect its natural resources. Here we show that the suppression of such trade may also impede the development of property rights in the South, but that even taking this into account, trade liberalization need not improve Southern welfare.

This paper first provides a brief overview of what are and what represent forest ecosystem services. Then it considers the issues of price and valuation, and shows that valuation itself is not a solution but merely a tool. Considering then the reasons of the overall degradation of forest ecosystem services it shows that the main reasons tend to be fundamental: deforestation most often happens because it pays for local people - not so much because the institutionally created arrangements are perverse.