Sentences with phrase «net land carbon»

Nonetheless, our global fire weather season length metrics were significantly correlated to global net land carbon flux.

In addition, when correlations were constrained to the time period that satellite burned area observations were available from the Moderate Resolution Imaging Spectroradiometer (MODIS)(2001 - 2012), and thus where estimates of land - use change carbon emissions were more certain2, correlations between fire weather season length, long fire season affected area and net land carbon fluxes increased substantially to ρ = − 0.797 and ρ = − 0.825, respectively, n = 12, P < 0.01).

Likewise, fire weather season length and long fire weather season affected area were significantly correlated with global net land carbon flux calculated from an analysis of the global carbon budget from 1979 to 2012 (ref.

The highest correlations between the net land carbon flux and continental biome mean fire weather season metrics were observed in the tropical and subtropical forests, grasslands and savannas and xeric shrublands of South America where regional fire weather season length metrics accounted for between 15.7 and 29.7 % of the variations in global net land carbon flux (Table 5).

Not exact matches

Darin Kingston of d.light, whose profitable solar - powered LED lanterns simultaneously address poverty, education, air pollution / toxic fumes / health risks, energy savings, carbon footprint, and more Janine Benyus, biomimicry pioneer who finds models in the natural world for everything from extracting water from fog (as a desert beetle does) to construction materials (spider silk) to designing flood - resistant buildings by studying anthills in India's monsoon climate, and shows what's possible when you invite the planet to join your design thinking team Dean Cycon, whose coffee company has not only exclusively sold organic fairly traded gourmet coffee and cocoa beans since its founding in 1993, but has funded dozens of village - led community development projects in the lands where he sources his beans John Kremer, whose concept of exponential growth through «biological marketing,» just as a single kernel of corn grows into a plant bearing thousands of new kernels, could completely change your business strategy Amory Lovins of the Rocky Mountain Institute, who built a near - net - zero - energy luxury home back in 1983, and has developed a scientific, economically viable plan to get the entire economy off oil, coal, and nuclear and onto renewables — while keeping and even improving our high standard of living

But if biofuels genuinely capture carbon beyond what was being captured on the land before the land was put into biofuels production, then there is a net savings.

«Typically we think of land as a net «sink» of carbon dioxide.

Map shows the entire area where oil and gas development has reduced the land's ability to fix carbon, measured in «net primary production,» which is the net amount of carbon fixed by plants and stored in biomass.

sources of carbon: land 120 Gt ocean 90 Gt human 7 Gt sinks for carbon: land 122 Gt ocean 92 Gt human 0 Gt net change: 3 Gt source And it's all human!

We find that without dramatic increases in the area of forests, without substantially positive changes in land - use practices, without large net positive effects of CO2 or climate change in the future, or without some other new significant carbon storage mechanism, the U.S. carbon sink itself will decrease substantially over the 21st century.

At this point we have absolutely zero evidence that any public policies have the capacity to produce a net gain of land based carbon biomass.

Currently, although only 20 % of the accumulated anthropogenic rise in carbon dioxide originates from land use and land cover change (LULCC), 40 % of the net positive radiative forcing from human activities is attributable to LULCC sources (Ward et al 2014).

The land ecosystems have, of course, a high turnover of carbon, but (unlike humans) do not add any net CO2 to the atmosphere.

The Plan B goals are to end net deforestation worldwide and to sequester carbon through a variety of tree planting initiatives and the adoption of improved agricultural land management practices.

It also has one new sub-category: Changes in mineral soil carbon stocks, which allows for the inclusion of three potential sources of CO2 emissions from agricultural soils (net changes in organic carbon stocks of mineral soil associated with changes in land use and management, emissions from cultivated organic soils and emissions from liming of agricultural soils).

Burning wood instead of coal therefore creates a carbon debt — an immediate increase in atmospheric CO2 compared to fossil energy — that can be repaid over time only as — and if — NPP [net primary production] rises above the flux of carbon from biomass and soils to the atmosphere on the harvested lands.»

Earth's land surfaces were a net source of CO2 - carbon to the atmosphere until about 1940.

Carbon and Other Biochemical Cycles: On the headline statement in this section, Brazil insisted on nuancing the relative contribution of land - use change to the increase of CO2 concentrations, and including reference to the role of forests as sinks, with Venezuela proposing to refer to the net balance between emissions and carbon capture by land systems.

However, by Houghton, R.A. 2008 he found, «The estimated global total net flux of carbon from changes in land use increased from 500.6 Tg C in 1850 to a maximum of 1712.5 Tg C in 1991 ``.

Houghton's method of reconstructing Land - Use Based Net Flux of Carbon appears arbitrary and susceptible to bias; i.e. «Rates of land - use change, including clearing for agriculture and harvest of wood, were reconstructed from statistical and historic documents for 9 world regions and used, along with the per ha [hectare] changes in vegetation and soil that result from land management, to calculate the annual flux of carbon between land and atmosphere.&raLand - Use Based Net Flux of Carbon appears arbitrary and susceptible to bias; i.e. «Rates of land - use change, including clearing for agriculture and harvest of wood, were reconstructed from statistical and historic documents for 9 world regions and used, along with the per ha [hectare] changes in vegetation and soil that result from land management, to calculate the annual flux of carbon between land and atmosphere.&raland - use change, including clearing for agriculture and harvest of wood, were reconstructed from statistical and historic documents for 9 world regions and used, along with the per ha [hectare] changes in vegetation and soil that result from land management, to calculate the annual flux of carbon between land and atmosphere.&raland management, to calculate the annual flux of carbon between land and atmosphere.&raland and atmosphere.»

If we reforested our lands and increased the capacity of our carbon sinks in other ways, it would help reduce our net carbon emissions.

Furthermore Houghton's findings have varied significantly over time, i.e. in Houghton & Hackler, 2001 they found that, «The estimated global total net flux of carbon from changes in land use increased from 397 Tg of carbon in 1850 to 2187 Tg or 2.2 Pg of carbon in 1989 and then decreased slightly to 2103 Tg or 2.1 Pg of carbon in 1990 ``.

Agricultural land is being diverted to producing biofuels, solely because they have no net carbon emisssions

Carbon emissions from fire are, on average, as much as 60 % of the net carbon sequestered by the land surface.

In this graph, positive values mean that the land is a net carbon sink (absorbing CO2), while negative values mean it is a net carbon source (releasing CO2).

We argue elsewhere (see section 14 in Supporting Information of [54]-RRB- that the commonly employed net land use estimates [256] are about a factor of two larger than the net land use carbon that is most consistent with observed CO2 history.

First, we assumed that reforestation and improved agricultural and forestry practices can suck up the net land use carbon of the past.

This is because any net additions of CO2 to the atmosphere resulting from biomass combustion should be captured by analyzing land - use, land - use change activities and their associated effects on terrestrial biomass carbon stocks.

Way to go Frank; not only are we a net carbon sink; but we are the ONLY sizeable land mass that is a net carbon sink; the rest are either carbon sources or about neutral; and yes with 5 % oft he world population we consume 25 % of the world oil; we also make about 25 % of the world's goods and services; Maybe we need to be using more of the world's oil.

Environmental groups within RSPO tried to mandate that future oil palm expansion can only occur on land with net carbon storage lower than oil palm (less than 40 tons of carbon per hectare averaged over the 25 - 30 year lifespan of an plantation).

The overall net emission over this period = + 0.5 units yet we can see how anthropogenic and sea (e.g. warming) contribute equally to this figure while net natural emission (i.e. sea + land) is — 0.5 Do we really know enough about the carbon cycle, in particular the natural fluxes of CO2, to rule out that some thing like this is going on?

As with land - produced biofuels, the contribution to carbon dioxide reduction would come from cutting net carbon dioxide additions via equivalent decreases in fossil fuel combustion.

This new concept of anthropogenic impacts on seawater pH formulated here accommodates the broad range of mechanisms involved in the anthropogenic forcing of pH in coastal ecosystems, including changes in land use, nutrient inputs, ecosystem structure and net metabolism, and emissions of gases to the atmosphere affecting the carbon system and associated pH. The new paradigm is applicable across marine systems, from open - ocean and ocean - dominated coastal systems, where OA by anthropogenic CO2 is the dominant mechanism of anthropogenic impacts on marine pH, to coastal ecosystems where a range of natural and anthropogenic processes may operate to affect pH.

By including fast carbon cycle feedbacks, the team showed that 3 C could possibly reverse the sign of net carbon flows between atmosphere and land.

Specifically, it says: «through a combination of meaningful reductions and carbon - reducing land use and renewable energy projects, the production and sale of each bottle of FIJI Water will actually result in a net reduction of carbon in the atmosphere by 120 %.»

But if one were able to maintain the large numbers of domesticated / food animals without using fossil fuels to power the farming systems, and didn't make any further land use changes, then there would be no net positive CO2 emissions (there might still be net CH4 emissions, but presumably every CH4 would be released at the expense of CO2, since there's nowhere else for the carbon to come from).

4) Movies, from An Inconvenient Truth to Syriana and the independent film Sweet Land are entertaining us without emitting any net carbon.

It's only when deforestation and other land use changes made a net shift of carbon in the short term carbon cycle from plants back into the atmosphere, that humans began to make a net positive return of CO2 into the atmosphere (although deforestation is essentially reversible in principle), and it's very true to point out that industrial scale animal husbandry with its high cost in fossil - fuel - derived energy does mean that what might otherwise be a relatively closed system of cycling CO2 from the atmosphere through plants and then animals and back to the atmosphere, does become net positive with respect to CO2 emissions.

Unless the land use changes are permanently away from vegetation, as in paving a large area, the net carbon emissions are zero since whatever gets removed will grow back and thus consume the excess CO2.

As a result of the thawing permafrost, the land switched from a carbon sink (net CO2 absorber) to a carbon source (net CO2 emitter) decades earlier than it would have otherwise — before 2100 for every DEP.

And they found that while land - based living things are still pulling in more carbon dioxide each year than they themselves are giving off — rendering the biosphere a carbon dioxide «sink» — they are a net source of both methane and nitrous oxide.

I haven't yet studied the article in detail but my thoughts are that the relative uncertainties are high, as expected since the atmospheric CO2 level at a given time is the response of the complex carbon cycle to the net anthro increase (6 Gt from fossil + est 2 Gt from land use change), small but not negligible compared to the gross carbon cycle fluxes (90 Gt to / from ocean, 120 Gt to / from biosphere).

The plans work together to protect agricultural lands, water resources and natural areas; they support the achievement of complete communities that are compact and walkable; and, where appropriate, are transit - supportive which will help reduce greenhouse gas emissions and work towards low - carbon communities, and the long - term goal of net - zero communities.