Passar para o conteúdo principal

page search

IssuesambienteLandLibrary Resource
There are 6, 186 content items of different types and languages related to ambiente on the Land Portal.

ambiente

AGROVOC URI:

Displaying 2953 - 2964 of 3187

Environmental issues and ILCA research agenda

Conference Papers & Reports
Dezembro, 1993

As the only international centre that is solely concerned with African livestock, ILCA has a responsibility to play a lead role in defining the agenda of research issues related to livestock development and environmental policy in Africa. This paper presents a framework appropriate for defining that agenda and for guiding analysis of particular research issues and gives some detail on how ILCA might approach the specific area of range management policy in the arid and semi-arid areas.

Effect of grazing on plant attributes and hydrological properties in the sloping lands of the East African highlands

Journal Articles & Books
Dezembro, 2002
África
África Oriental

Extending livestock grazing to the steep slopes has led to unstable grazing systems in the East African Highlands, and new solutions and approaches are needed to ameliorate the current situation. This work was aimed at studying the effect of livestock grazing on plant attributes and hydrological properties. The study was conducted from 1996 to 2000 at the International Livestock Research Institute at Debre Ziet Research Station. Two sites were selected: one at 0-4% slope, and the other at 4-8% slope.

Current trends of rubber plantation expansion may threaten biodiversity and livelihoods

Journal Articles & Books
Dezembro, 2015
Cambodja
Laos
Myanmar
Tailândia
Vietnam

The first decade of the new millennium saw a boom in rubber prices. This led to rapid and widespread land conversion to monoculture rubber plantations in continental SE Asia, where natural rubber production has increased >50% since 2000. Here, we analyze the subsequent spread of rubber between 2005 and 2010 in combination with environmental data and reports on rubber plantation performance. We show that rubber has been planted into increasingly sub-optimal environments. Currently, 72% of plantation area is in environmentally marginal zones where reduced yields are likely.