UNEP Publications: This report explores how the management of land - based biomass production and consumption can be developed towards a higher degree of sustainability across different scales: from the sustainable management of soils on the field to the sustainable management of
global land use as a whole.
Not exact matches
Other environmental impacts such
as greenhouse gas emissions or
land use should be taken into consideration, when possible, in order to address the environmental impacts of the
global dairy sector in a holistic manner.
The 2014 program schedule included: culinary demonstrations centered around adventurous flavors and new menu trends; presentations and panel discussions focused on sustainable agricultural practices, the role of wheat in our diet vs. seekers of gluten - free options, and water issues affecting food production; discussions on how American menus are often shaped by millennials, health and nutrition concerns, and
global cuisines; a Friday field trip to the CIA Farm in St. Helena and through Marin and Sonoma Counties to visit Pozzi Ranch, Dutton Ranch (where Valley Ford Cheese Company joined), and Gourmet Mushrooms with tastings and presentations by the farmers
as well
as farm bureau and
land trust experts; and the exciting and interactive Saturday Market Basket Exercise, where attendees were divided into six teams to develop menu concepts
using sponsor products for the following categories:
Reducing food losses & food waste (FLW) is a key
global challenge to ensure sufficient and healthy food into the future, and to
use available arable
land as efficiently
as possible.
As Jonathon Bloom of Wasted Food explained, the existing food system perpetuates the overproduction of commodities, artificially low prices, and disproportionate
use of our resources (80 % of water, 50 % of
land and 10 % of
global oil is
used in food production).
The groups said the United States should make the conservation, restoration and sustainable management of forests in developing nations a central goal of federal climate legislation,
as tropical deforestation and other
land -
use decisions account for about 20 percent of
global greenhouse gas emissions.
Munroe studies how
land is
used in a
global context,
using concepts such
as «telecoupling,» which involves how humans and natural systems interact over long distances.
Land - use changes in the United States, such as the conversion of undeveloped land to housing or agricultural use, appear to be contributing to global warming trends to a much greater degree than scientists previously thou
Land -
use changes in the United States, such
as the conversion of undeveloped
land to housing or agricultural use, appear to be contributing to global warming trends to a much greater degree than scientists previously thou
land to housing or agricultural
use, appear to be contributing to
global warming trends to a much greater degree than scientists previously thought.
This
global bushmeat hunting crisis is a fundamentally distressing problem to address because it is intimately tied to human development challenges such
as food insecurity, emergent disease risks and
land -
use changes [7].
Given the invisible prevalence of citizen science in advancing this one area of
global change research, we suspect it also common in many other areas of inquiry such
as studies of
land -
use change, invasive species, and environmental pollutants, to name a few.
Use your pragmatism wisely and just
as in the cockpit, look at all the potential scenarios regarding what kind of
landing we are in for based on our decisions
as a
global community.
--
As already said, land use changes probably had (and have) a limited effect on global temperatures, as good as volcanoes (less than 0.1 K
As already said,
land use changes probably had (and have) a limited effect on
global temperatures,
as good as volcanoes (less than 0.1 K
as good
as volcanoes (less than 0.1 K
as volcanoes (less than 0.1 K).
If one takes the MBH98 / 99 reconstruction
as base, the variation in the pre-industrial period was ~ 0.2 K, of which less than 0.1 K (in average) from volcanic eruptions, the rest mostly from solar (I doubt that
land use changes had much influence on
global temperatures).
Anthropogenic
global warming (AGW), a recent warming of the Earth's lower atmosphere
as evidenced by the
global mean temperature anomaly trend [11], is BELIEVED to be the result of an «enhanced greenhouse effect» mainly due to human - produced increased concentrations of greenhouse gases in the atmosphere [12] and changes in the
use of
land [13].
Their findings showed a startling 218 - 990 million hectares of
land would have to be converted to switchgrass (which is 14 - 65 times
as much
land as the US
uses to grow corn for ethanol); also 17 - 79 million tonnes of fertiliser a year — which would be 75 % of all
global nitrogen fertiliser
used at present; and 1.6 - 7.4 trillion cubic metres of water a year.
We will then proceed to describe the underlying socioeconomic assumptions that shape RCP4.5 and its associated reference scenario and discuss the characteristics of RCP4.5, highlighting the
global energy, economic,
land use, and
land cover systems,
as well
as the mechanisms employed to limit radiative forcing to 4.5 W m − 2 and contrast RCP4.5 to its reference scenario.
All of this work will soon be advanced enormously by a major new collaborative international working group led by Kathleen Morrison,
Land Use 6000 (LU6K), which aims to provide empirical global reconstructions of land use and land cover over the past 6000 years and earlier as part of the Land Cover 6000 project (LC6K) of PA
Land Use 6000 (LU6K), which aims to provide empirical global reconstructions of land use and land cover over the past 6000 years and earlier as part of the Land Cover 6000 project (LC6K) of PAG
Use 6000 (LU6K), which aims to provide empirical
global reconstructions of
land use and land cover over the past 6000 years and earlier as part of the Land Cover 6000 project (LC6K) of PA
land use and land cover over the past 6000 years and earlier as part of the Land Cover 6000 project (LC6K) of PAG
use and
land cover over the past 6000 years and earlier as part of the Land Cover 6000 project (LC6K) of PA
land cover over the past 6000 years and earlier
as part of the
Land Cover 6000 project (LC6K) of PA
Land Cover 6000 project (LC6K) of PAGES.
First, the project defined the detailed specifications of a
global land cover product matching the GCOS requirements (both for itself and
as a surrogate for other important climate variables), achievable on a regular basis
using the current EO systems and building on the FAO / UNEP LCCS for the sake of compatibility with other
land cover products.
The challenge will be settled
using the NASA GISS mean
global land surface temperatures for the conventional climate averaging period (defined by the World Meteorological Organization
as 30 years) ending on December 31, 2016.
The IPCC also reports that the resilience of many ecosystems around the world is likely to be exceeded this century by an unprecedented combination of climate change; disturbances associated with climate change, such
as flooding, drought, wildfire, and insects; and other
global change - drivers, including
land -
use changes, pollution, habitat fragmentation, urbanization, and growing human populations and economies.
Incorporation of information typically
used as input assumptions by integrated assessment models of the
global energy - economy -
land use system, or by
global - scale climate impact models of different sectors.
95 % confidence that 50 % of the warming since 1951 is due to some form of human activity is not likely to be falsified
using «
Global» surface temperature since about 30 % of the warming is over
land and GISS interprets high latitude and higher altitude warming
as «surface» warming.
The fact is that if we can't greatly reduce fossil fuel
use by the 2030 - 2040 range, by 2075 be will see a
global average temperature rise of 3.5 to 4.0 degrees Celsius, which is also just about the time frame for world phosphate supplies to enter critical shortages that will eventually cut crop yields in half and require twice
as much
land and water to grow the same yield
as previously.
Since most of our ocean sensors are on the surface, and «ocean temperature» is often
used as shorthand for «ocean surface temperature», it seems to me that we should see the oceans warming at least
as fast
as the
land, if internal ocean variability could explain
global warming.
Under the PES agreement, their tree - based
land use systems sequestered carbon that was sold
as credits on the Markit Registry for managing
global carbon credits.
-- Increased urbanization and
land use changes since WWII
as a possible partial cause of warming of
global surface temperature over
land.
This may be me advertising my ignorance but if the OHC is of interest
as against the SST why do we
use a parameter of «
global temperature» which is an amalgam of SST and air temperature over
land rather than a total heat content or a temperature normalised say for mass or thermal density (normalise to the properties of water say)?
The metric
used by IPCC in all its reports for past and projected future «
global warming» has been the «globally and annually averaged
land and sea surface temperature anomaly» (
as reported by HadCRUT3).
Deriving a reliable
global temperature from the instrument data is not easy because the instruments are not evenly distributed across the planet, the hardware and observing locations have changed over the years, and there has been extensive
land use change (such
as urbanization) around some of the sites.
Since the 90S to 30N is where most of those 1.8 billion people live and giving them electricity would increase their
land use productivity and quality of life,
global temperatures would go off the charts
as Mike Mann has clearly known all along.
In summary, these results demonstrate the potential for synergies and sensitivities of ecological response to forest loss in disparate regions via ecoclimate teleconnections, which will need to be accounted for
as global forest loss increases and climate dynamics are altered in response to
land use and climate change.
Another discovery was the
global importance of novel ecosystems (Hobbs et al. 2006)- the ecosystems we've created
as a byproduct of our widespread
use of
land.
The natural variation that has led us out of the Little Ice Age has a bit of frosting on the cake by
land use; and, part of that
land use has resulted in a change in vegetation and soil CO2 loss so that we see a rise in CO2 and the CO2 continues to rise without a temperature accompaniment (piano player went to take a leak),
as the
land use has all but gobbled up most of the arable
land North of 30N and we are starting to see low till farming and some soil conservation just beginning when the soil will again take up the CO2, and the GMO's will increase yields, then CO2 will start coming down on its own and we can go to bed listening to Ave Maria to address another
global crisis to get the populous all scared begging governments to tell us much ado about... nothing.
Global models incorporating
land use, such
as Integrated Assessment Models and Earth System Models, are improving their accounting of the complex biogeophysical and biogeochemical effects of heterogeneous
land management practices within broad
land use classes (Erb et al 2016).
The limited experience in
global land -
use modeling
as part of integrated assessment work is also reflected in the RCP development process.
An early 2008 study led by Tim Searchinger of Princeton University that was published in Science
used a
global agricultural model to show that when including the
land clearing in the tropics, expanding U.S. biofuel production increased annual greenhouse gas emissions dramatically instead of reducing them,
as more narrowly based studies claimed.
Future
global vegetation carbon change calculated by seven
global vegetation models
using climate outputs and associated increasing CO2 from five GCMs run with four RCPs, expressed
as the change from the 1971 — 1999 mean relative to change in
global mean
land temperature.
The Wall Street Journal has reported the results of two independent studies that suggest the widespread
use of ethanol from corn could result in nearly twice the greenhouse gas emissions
as the gasoline it would replace because of expected
land -
use changes, researchers concluded Thursday. The study challenges the rush to biofuels
as a response to
global warming.
However, the increasing
use of certain food crops for biofuel production can in some cases significantly raise
global greenhouse gas emissions
as a result of deforestation and
land degradation.
Just
as many
global south cities have never had
land line telephony — they've gone straight to mobile phones — I think we'll see cities here that really are able to run on data,
use the kind of whole smart city thinking to be very, very efficient, very high quality green design buildings.
Anthropogenic
global warming (AGW), a recent warming of the Earth's lower atmosphere
as evidenced by the
global mean temperature anomaly trend [9], is believed to be the result of an «enhanced greenhouse effect» mainly due to human - produced increased concentrations of greenhouse gases in the atmosphere [10] and changes in the
use of
land [11]..
Note we're
using BEST
land area, so actual rates of warming are slightly elevated from
global levels including sea surface temperatures, however BEST has enough resolution to allow us to work with 12.5 years of temperature data and not have such abysmal CI
as to need to reject the comparisons outright..
(11/15/07) «Ban the Bulb: Worldwide Shift from Incandescents to Compact Fluorescents Could Close 270 Coal - Fired Power Plants» (5/9/07) «Massive Diversion of U.S. Grain to Fuel Cars is Raising World Food Prices» (3/21/07) «Distillery Demand for Grain to Fuel Cars Vastly Understated: World May Be Facing Highest Grain Prices in History» (1/4/07) «Santa Claus is Chinese OR Why China is Rising and the United States is Declining» (12/14/06) «Exploding U.S. Grain Demand for Automotive Fuel Threatens World Food Security and Political Stability» (11/3/06) «The Earth is Shrinking: Advancing Deserts and Rising Seas Squeezing Civilization» (11/15/06) «U.S. Population Reaches 300 Million, Heading for 400 Million: No Cause for Celebration» (10/4/06) «Supermarkets and Service Stations Now Competing for Grain» (7/13/06) «Let's Raise Gas Taxes and Lower Income Taxes» (5/12/06) «Wind Energy Demand Booming: Cost Dropping Below Conventional Sources Marks Key Milestone in U.S. Shift to Renewable Energy» (3/22/06) «Learning From China: Why the Western Economic Model Will not Work for the World» (3/9/05) «China Replacing the United States and World's Leading Consumer» (2/16/05)» Foreign Policy Damaging U.S. Economy» (10/27/04) «A Short Path to Oil Independence» (10/13/04) «World Food Security Deteriorating: Food Crunch In 2005 Now Likely» (05/05/04) «World Food Prices Rising: Decades of Environmental Neglect Shrinking Harvests in Key Countries» (04/28/04) «Saudis Have U.S. Over a Barrel: Shifting Terms of Trade Between Grain and Oil» (4/14/04) «Europe Leading World Into Age of Wind Energy» (4/8/04) «China's Shrinking Grain Harvest: How Its Growing Grain Imports Will Affect World Food Prices» (3/10/04) «U.S. Leading World Away From Cigarettes» (2/18/04) «Troubling New Flows of Environmental Refugees» (1/28/04) «Wakeup Call on the Food Front» (12/16/03) «Coal: U.S. Promotes While Canada and Europe Move Beyond» (12/3/03) «World Facing Fourth Consecutive Grain Harvest Shortfall» (9/17/03) «Record Temperatures Shrinking World Grain Harvest» (8/27/03) «China Losing War with Advancing Deserts» (8/4/03) «Wind Power Set to Become World's Leading Energy Source» (6/25/03) «World Creating Food Bubble Economy Based on Unsustainable
Use of Water» (3/13/03) «
Global Temperature Near Record for 2002: Takes Toll in Deadly Heat Waves, Withered Harvests, & Melting Ice» (12/11/02) «Rising Temperatures & Falling Water Tables Raising Food Prices» (8/21/02) «Water Deficits Growing in Many Countries» (8/6/02) «World Turning to Bicycle for Mobility and Exercise» (7/17/02) «New York: Garbage Capital of the World» (4/17/02) «Earth's Ice Melting Faster Than Projected» (3/12/02) «World's Rangelands Deteriorating Under Mounting Pressure» (2/5/02) «World Wind Generating Capacity Jumps 31 Percent in 2001» (1/8/02) «This Year May be Second Warmest on Record» (12/18/01) «World Grain Harvest Falling Short by 54 Million Tons: Water Shortages Contributing to Shortfall» (11/21/01) «Rising Sea Level Forcing Evacuation of Island Country» (11/15/01) «Worsening Water Shortages Threaten China's Food Security» (10/4/01) «Wind Power: The Missing Link in the Bush Energy Plan» (5/31/01) «Dust Bowl Threatening China's Future» (5/23/01) «Paving the Planet: Cars and Crops Competing for
Land» (2/14/01) «Obesity Epidemic Threatens Health in Exercise - Deprived Societies» (12/19/00) «HIV Epidemic Restructuring Africa's Population» (10/31/00) «Fish Farming May Overtake Cattle Ranching
As a Food Source» (10/3/00) «OPEC Has World Over a Barrel Again» (9/8/00) «Climate Change Has World Skating on Thin Ice» (8/29/00) «The Rise and Fall of the
Global Climate Coalition» (7/25/00) «HIV Epidemic Undermining sub-Saharan Africa» (7/18/00) «Population Growth and Hydrological Poverty» (6/21/00) «U.S. Farmers Double Cropping Corn And Wind Energy» (6/7/00) «World Kicking the Cigarette Habit» (5/10/00) «Falling Water Tables in China» (5/2/00) Top of page
However, the need to define outside influences on
land use in regional - scale models, such
as global trade, remains a challenge (e.g., Sands and Edmonds, 2005; Alcamo et al., 2006b), so IAMs have an important role to play in characterising the
global boundary conditions for regional
land -
use change assessments (van Meijl et al., 2006).
According to the NASA analysis, the
global average
land - ocean temperature last year was 58.2 degrees Fahrenheit, slightly more than 1 degree above the average temperature between 1951 and 1980, which scientists
use as a baseline.
As a group, Terra has more
global experience in the
land -
use sector than any other entity and is committed to working with its local partners to build capacity and support local communities and governments to sustainably manage their
land.
Anyone can
use the web - based
Global Calculator tool to model the world in 2050, by making a series of choices about lifestyle (such
as diet and appliance
use), transport, buildings, industry,
land use and energy.
As such, the GCRA (Section 106) mandated that the CCSP prepare, not less frequently than every four years, a scientific assessment report, or National Assessment, of
global climate change research that, among other things, analyzes the effects of
global change on eight specific areas, including: «the natural environment, agriculture, energy production and
use,
land and water resources, transportation, human health and welfare, human social systems, and biological diversity.»
Research such
as this is vital because, although the most visible attempts to reduce
global warming and mitigate climate change depend on lowering greenhouse gas emissions from fossil fuel combustion, there is another, parallel, approach: to limit the emissions that spring from
land use change, chiefly by preserving natural forests.
As the coming century of
global warming threatens to accelerate the extinction crisis, we believe the highest and best
use of public
lands is to provide safe harbor for species by protecting the ecological systems upon which they and we ultimately depend.