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Displaying 1116 - 1120 of 1195

Adoption potential of fruit-tree-based agroforestry on small farms in the subtropical highlands

Journal Articles & Books
Décembre, 2008
Guatemala

Worldwide, fruit-tree-based agroforestry systems have been only modestly studied, although they are common on smallholder farms. Such systems based on apple (Malus spp.), peach (Prunus spp.), and pear (Pyrus spp.) are common in northwest Guatemala as low intensity homegardens and are known to increase total farm productivity in communities where farm size is a limiting factor.

Soil-atmosphere exchange of nitrous oxide and methane in New Zealand terrestrial ecosystems and their mitigation options: a review

Journal Articles & Books
Décembre, 2008
Nouvelle-Zélande

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 animal dung and urine, applied fertiliser N, biologically fixed N₂, and mineralisation of soil organic N. Even though about 96% of the anthropogenic CH₄ emitted in New Zealand is from ruminant animals (methanogenesis), methane uptake by aerobic soils (methanotrophy) can significantly contribute to the removal of CH₄ from the atmpsphere, as the global estimates confirm.

review of a community-based approach to combating land degradation: dryland salinity management in Australia

Journal Articles & Books
Décembre, 2008
Australie

Degradation of farmland caused by salinisation is a major environmental issue in Australia. To combat salinisation a community-based approach has been adopted. This paper reviews the nature and effectiveness of this approach, describing its rationale, strengths and weaknesses. The community-based approach is shown to have been highly successful in raising awareness and providing education about the problem of dryland salinity in Australia, and has encouraged group participation in managing the problem.

Willingness to Pay for Forest Property Rights and the Value of Increased Property Rights Security

Journal Articles & Books
Décembre, 2008

This paper studies the willingness to pay (WTP) for forest property rights in Viet Nam. We do so by asking respondents to estimate the value of two different forest property rights regimes where only the level of property security differs and all other forest plot characteristics are constant. We use this information to identify the value of the property rights security.

Land desertification monitoring and assessment in Yulin of Northwest China using remote sensing and geographic information systems (GIS)

Journal Articles & Books
Décembre, 2008

The objective of this study is to develop techniques for assessing and analysing land desertification in Yulin of Northwest China, as a typical monitoring region through the use of remotely sensed data and geographic information systems (GIS). The methodology included the use of Landsat TM data from 1987, 1996 and 2006, supplemented by aerial photos in 1960, topographic maps, field work and use of other existing data.