Sentences with phrase «land conversion»

This would require the clearing of forest and grassland for food production, with associated emissions from land conversion.
Green groups now point to large - scale land conversion for energy crops, higher food prices, and a spate to studies that suggest net emissions from corn ethanol are little better than those from fossil fuels, to caution that biofuels can cause more problems than they address.
Deforestation a Much Larger Issue Than Fossil Fuels in Many Places And it would be even more poignant had he been speaking about production of palm oil in Indonesia and Malaysia, where due to greenhouse gas emissions associated with land conversion from rainforest to plantations, the emissions from the fuel made from these crops can be nearly 10 times as much as from conventional fossil fuels.
While some forest - to - shrub land conversion scenarios resulted in higher stream flow, depending on factors such as the size and area covered by shrub leaves relative to tree leaves, Bart noted that a shrub - dominated landscape would not necessarily result in more water in stream.
These feed crops have to be grown somewhere, however, and the worldwide land conversions necessary to make up for lost U.S. crops would release carbon dioxide.
The country's political commitment to tackling deforestation and forest degradation has been questioned — for example, it remains the largest exporter of timber in the world, and continues to back large - scale land conversion plans under a paradigm of «green development».
The authors say that while models exist to determine the life cycle greenhouse gas profile of direct land conversions — say, converting a stand of timber to a biofuel crop — there has been little study of indirect land changes.
'' The great bulk of grassland and tropical forest land conversions taking place today are for traditional needs of food, feed and fiber.
Solutions and measures to slow deforestation have also been analyzed and tested, and the results show that it is critical to improve governance, land tenure, incomes, and security to slow the pace of new land conversion in these frontier regions.
Land - holders were allowed to set up solar power project on their holding or sub-let the holding for such projects without the requirement of land conversion in accordance with the Rajasthan Tenancy Act, 1955, and the Rajasthan Land Revenue Act, 1956.
However, this scenario is far from the reality in the smoke - filled frontier zones of deforestation in less - developed countries, where the models assume biofuel - induced land conversion takes place.
Total carbon accumulation reaches 1 Pg y − 1 after 50 years, and continues at that rate as further land conversion continues
In the case of the Korean DMZ, population growth on both sides, as well as land conversion and development, has forced wildlife — including rare species — into the zone.
Olson and his colleagues are studying the levees, diversions, and floodways, which for the past 200 years have allowed land conversion from wetlands to agriculture.
Biofuels made from sources that do not require land conversion, such as corn stover (the parts of corn plants left over after the ears are harvested), animal waste, damaged trees, algae, and food waste are promising alternatives.
Protecting these important natural acoustic resources as development and land conversion progresses is critical if we want to preserve the character of protected areas.»
These problems are compounded by deforestation, carried out in order to make room for increased agriculture as well as for commercial timber, and slash and burn land conversion for cattle grazing.
By Rob Ellison Some of the increase in atmospheric CO2 can be ascribed to a decline in soil carbon following land conversion to intensive farming methods (grazing or cropping).
However, as the impacts of population on yield and food demand are highly complex, we do not include avoided land conversion emissions associated with population change in the final emissions calculations for those solutions.
If agricultural croplands are drawn into the production of biofuel feedstocks, commodity prices are expected to rise, triggering land conversions overseas, releasing carbon emissions, and offsetting the carbon reductions expected from bioenergy.
The regions of the world that are experiencing first - time land conversion are characterized by market isolation, lawlessness, insecurity, instability, and lack of land tenure.
The total CO2 emissions from 10 % of the global diesel and gasoline consumption during 2030 was estimated at 0.84 Gt CO2, of which biofuels could substitute 0.17 to 0.76 Gt CO2 (20 - 90 %), whereas the annual CO2 emissions from direct land conversion alone are estimated to be in the range of 0.75 to 1.83 Gt CO2.»
Schematic of carbon sequestration by afforestation under two different land conversion scenarios.
(11/30/2011) It has long been known that biofuels release greenhouse gas emissions through land conversion like deforestation.
Recent scientific papers that blame biofuels for deforestation are based on models that presume that new land conversion can be simulated as a predominantly market - driven choice.
Recent decades have seen increased conversion of natural forests to pine or eucalyptus monocultures (Zurita et al. 2006), and policy incentives for further land conversion may negatively affect biodiversity (Caparrós and Jacquemont 2003).
There are also concerns about emissions and impacts from land conversion and land use associated with biofuel production.
Increased levels of hunting, forest loss and land conversion, land encroachment and selective logging negatively affect the birds through loss of nesting sites and reduction in prey availability.
From this the researchers were able to estimate the total greenhouse emissions due to land conversion.
As long as there is land conversion, though, biofuels do not diminish carbon dioxide emissions.
POTENTIAL ALTERNATIVES Using agricultural waste rather than actual agriculture to create biofuels removes the need for land conversion — much of the stuff is just lying around — and produces more fuel than corn:
But when she and her student Larissa Watkins started looking at the land conversions to almonds, and mapping it out using geographic information systems (GIS) tools, they soon started to wonder about the effects on water use.
«For one thing, every point of view has its own science and economics to support its contentions, whether it be pro- or anti- pesticide use, free - roaming cats, bird collisions with glass or towers, conflicts with fisheries, land conversion, wind energy, mining, timbering, climate change, or any other issue we consider in addressing bird conservation...» [2]
Nearly half (49 %) of all tropical deforestation in this period was the result of illegal land conversion for commercial agriculture, and nearly one quarter (24 %) was the direct result of illegal land conversion for commercial agricultural products bound for export markets.
It finds that these sources can economically produce large levels of biomass without compromising crop production, thereby mitigating the land conversion and carbon emissions effects posited by the Searchinger Hypothesis.
Searchinger et al. (2008, 2009) examined this issue related to corn ethanol and suggested that substituting corn ethanol for petroleum would increase carbon emissions associated with the land conversion abroad necessary to offset the decline in corn availability.
As long as the global cropland required for agricultural based consumption grows, displacement effects, land conversion and related direct and indirect impacts may not be avoided through selected production standards for biofuels.»
Let's just make that clear again: Cut down tropical rainforest (say in Indonesia and Malaysia), plant the land with a biofuel crop (perhaps oil palms) and because of the soil on which that forest used to grow it would take 600 hundred years for the carbon emitted from that land conversion to be balanced out by carbon savings by using that biofuel for transport.
Habitat Loss, Invasive Species, Human Activity the Main Threats The main threats birds face are similar to what any species faces, really: Land conversion to agriculture (73 % of species affected) and direct of indirect human use of biological resources.
But an innovative new study by the Center for International Forestry Research (CIFOR) published in Ecology and Society has computed how long it would take popular biofuel crops to payoff the «carbon debt» of land conversion.
One of the most effective areas for avoiding emissions from forest and land conversion is protecting and restoring peatland.
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