نتایج جستجو برای: fallow lands and forest in central zones
تعداد نتایج: 21788340 فیلتر نتایج به سال:
BACKGROUND Zonocerus variegatus (Linnaeus, 1758) (Orthoptera: Pyrgomorphidae) is known as an agricultural pest in West and Central Africa. However, its importance in the agricultural production system in Cameroon has not been investigated. The study assesses farmers' perception on the importance of Z. variegatus in the agricultural production systems of the humid forest zone of Southern Cameroo...
land vulnerable to desertification increased in the mediterranean basin since world war ii dueto several interacting factors including climate variations, land-use changes and growing human pressure. itwas hypothesized that the increase in the level of land vulnerability is not distributed homogeneously overtime and space while impacting preferentially landscapes surrounding large urban agglome...
three medium magnitude events happened inside the transitional border of south alborz and central iran; namely kahak-qom 2007/06/18 event with ml 5.6, zanjan 2008/05/27 event with ml 5.3 and aradan-garmsar 2007/11/19 event with ml 5.1. this provides us the opportunity to compute focal mechanism and stress drop of the events and compare them with those events happened within the alborz range.
this study was conducted in dez and karkheh regions in southwestern iran to model habitatsuitability of the persian fallow deer dama dama mesopotamicus and assessing trend of habitat changes since1989. a total of 22 confirmed presence records of the species were collected from 1988 to 2003. maxentapproach was used to develop habitat suitability model with regards to nine environmental variables...
Hurricanes can instantaneously affect millions of acres of forestland. In 1989, Hurricane Hugo reduced the inventory of softwood growth stock by 2 I percent in South Carolina (Sheffield and Thompson 1992). Annual forest inventories will provide nearly real-time estimates of change following catastrophic events. T h e ecological and economic sustainability of southern forests is in question. Leg...
BACKGROUND In the study, the Aras Basin and its environment, one of the most important hydrological basins of Turkey, was evaluated. In survey area, to determine the change of air quality, it was benefited from 23,770 pieces of hourly measured SO2 (Sulfur dioxide) and PM10 (particulate matter) concentration values for the December, January and February of 2009-2010 in which the pollution is at ...
Land use change resulting from anthropogenic pressure on land has led to degraded soil quality, especially in the hilly tropical regions where ecosystems are generally fragile and susceptible degradation cultivation. Hence, sustainable uses management practices crucial for agricultural production ecological balance, particularly these regions. The present study investigates impact of various hi...
The many opportunities for mitigating atmospheric carbon emissions in developing countries include reforesting degraded lands, implementing sustainable agricultural practices on existing lands and slowing tropical deforestation. This analysis shows that over the next 10 years, 48 major tropical and subtropical developing countries have the potential to reduce the atmospheric carbon burden by ab...
Land, a non-renewable resource, is central to all primary production systems. The geospatial technology of Remote Sensing and GIS holds the potential for timely and cost – effective assessment of natural resources. The techniques have been used extensively in the tropics for generating valuable information about various surface features of the earth. Therefore, we have used Remote Sensing and G...
Participatory ecosystem services scenarios can be used to inform decision making on the sustainable or wise use of biodiversity and ecosystem services (ES). To establish the plausibility and coherency of the recently constructed Biscay participatory scenarios, and to analyze policy options for improving sustainability of land use and the supply of ecosystem services, a spatially explicit analys...
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