Frontiers and deforestation
نویسندگان
چکیده
منابع مشابه
Proximate Population Factors and Deforestation in Tropical Agricultural Frontiers.
Forest conversion for agriculture expansion is the most salient signature of human occupation of the earth's land surface. Although population growth and deforestation are significantly associated at the global and regional scales, evidence for population links to deforestation at micro-scales-where people are actually clearing0020forests-is scant. Much of the planet's forest elimination is pro...
متن کاملDeforestation and Economie Development
Tropical deforestation is of growing concern to the world community. Global effects associated with this process include loss of biodiversity and changes in the carbon cycle. Although the importance and present severity of these two externalities are subjects of intense controversy, few would deny the cata strophic nature of their potential impacts. Deforestation also poses local and regional ...
متن کاملDeforestation and optimal management
In a general discrete time model of optimal forest management where land may be diverted to alternative use and stocks of standing trees may yield flow benefits, we investigate the economic and ecological conditions under which optimal paths lead to (total) deforestation i.e., complete long term removal of forest cover. We show that if deforestation occurs from some initial state, then it must ...
متن کاملAmazon deforestation and climate change.
A coupled numerical model of the global atmosphere and biosphere has been used to assess the effects of Amazon deforestation on the regional and global climate. When the tropical forests in the model were replaced by degraded grass (pasture), there was a significant increase in surface temperature and a decrease in evapotranspiration and precipitation over Amazonia. In the simulation, the lengt...
متن کاملDeforestation and tropical insect extinctions.
In a study comparing historical and recent records of forest-dwelling Helictopleurus dung beetles across Madagascar, Hanski et al. (2007) reported that species not found in Madagascar-wide sampling in 2002– 2006 have experienced a significantly higher level of deforestation within their known geographical ranges than those species that were recorded. They suggested that deforestation is respons...
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ژورنال
عنوان ژورنال: Nature Plants
سال: 2019
ISSN: 2055-0278
DOI: 10.1038/s41477-019-0371-6