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Showing items 1 through 9 of 79.
  1. Library Resource
    Reports & Research
    December, 1997

    Rainfall, water, sediment yields and evaporation were quantified in three catchment areas with undisturbed rain forest, selectively logged forest, and forest with shifting cultivation respectively. Despite a considerable regional variation in rainfall(1700-2300 mm/a), annual evaporation rates were similar (1209-1314 mm/a). The impact of land use practices on water yield is negligible compared to the effect of rainfall.

  2. Library Resource
    Journal Articles & Books
    December, 1997

    The effect of two practices adopted by settlers (abandoned pasture and fallow land) on soil fertility of two deforested Amazonian regions (Belém-Pará and Ariquemes-Rondônia) was studied. Whenever possible, cultivated pasture, over similar time periods in both cases and in natural forest, were employed as soil fertility reference standards. Nutrient dynamics was studied using the electroultra-filtration technique. In general, deforestation, as practiced in these areas, has a degrading effect on soil fertility. The effect of burning normally leads to a pH rise caused by ash.

  3. Library Resource
    February, 1997

    The Law provides rules on different types of protection zones, protected areas, and protection strips, which are specified in laws and other regulatory enactments. Its purpose is to determine the types of protection zones and the functions thereof; the basic principles for the establishment of protection zones; the procedures for the maintenance and control of the condition of protection zones; and restrictions of economic activity in protection zones.

  4. Library Resource
    National Policies
    April, 1997

    The National Policy on Forests developed by the Ministry of Environmental Protection, Natural Resources and Forestry is a nation-wide sectoral document for designating the complex of actions shaping relations between humankind and forests, with the aim of preserving the conditions for the indefinite maintenance of the multi-functionality of forests, their multi-faceted utility and protection and their role in the shaping of the natural environment, in line with the present and future expectations of society.

  5. Library Resource
    May, 1997

    This Act provides for the management and conservation of forestry resources in Malawi.

  6. Library Resource
    National Policies
    January, 1997

    The overall aim of the National Land Policy is to promote and ensure a secure land tenure system, to encourage the optimal use of land resources, and to facilitate broad-based social and economic development without upsetting or endangering the ecological balance of the environment. The specific objectives of this National Land Policy are to: promote an equitable distribution of and access to land by all citizens; ensure that existing rights in land especially customary rights of smallholders (i.e.

  7. Library Resource
    January, 1997

    Social forestry emerged amidst important changes in thinking about the role of forestry in rural development and a growing need for fuelwood. In an attempt to alleviate the fuelwood crisis, the World Bank encouraged the planting of Eucalyptus species in its social forestry programs in the 1980s. Eucalypts were the chosen tree species for the majority of social forestry projects because they survive on difficult sites and out-perform indigenous species and most other exotics in height and girth increment, producing wood for poles, pulp and fuel more rapidly.

  8. Library Resource
    January, 1997
    Cambodia, Oceania, Eastern Asia

    A recent eighteen-month economic study of the benefits of alternative uses of forest and in Ratanakiri province recommends the exclusion of customary forest land from current and future commercial concessions. The study compares the economic benefits of using forest land in Ratanakiri for the traditional collection of non-timber forest products by ethnic communities, with the benefits of commercial timber harvesting. The main conclusions of the study are that non-timber forest products (NTFP) are worth a lot, much more than previously thought.

  9. Library Resource
    January, 1997
    Thailand, Eastern Asia, Oceania

    Population pressures play less of a role in deforestation than earlier studies of Thailand found. Between 1976 and 1989, Thailand lost 28 percent ofits forest cover. To analyze how road building, population pressure,and geophysical factors affected deforestation in Thailand during that period, Cropper, Griffiths, and Mani develop a model in whichthe amount of land cleared, the number of agricultural households,and the size of the road network are jointly determined.The model assumes that the amount of land cleared reflects an equilibrium in the land market.

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