Sentences with phrase «soil organic»

Soil organic carbon, nitrogen and phosphorus distribution in the densely populated village landscapes of different hilly regions (in Chinese).

Land use and soil organic carbon in China's agricultural village landscapes.

Changes in land use and land cover and soil organic carbon storage in the densely populated village landscapes of China's Yangtze Plain from 1940s to 2002 (in Chinese).

Landscape structure, management and soil organic carbon in the densely populated village landscapes of China's Yangtze Delta Plain.

Montane forest root growth and soil organic layer depth as potential factors stabilizing Cenozoic global change (pages 983 — 990)

Montane forest root growth and soil organic layer depth as potential factors stabilizing Cenozoic global change (pages 983 — 990) Christopher E. Doughty, Lyla L. Taylor, Cecile A. J. Girardin, Yadvinder Malhi and David J. Beerling

Farmers can store atmospheric carbon dioxide in their soils as soil organic carbon, which is why the Senate climate bill must support farmers with carbon credits.

To take just one fairly representative example, in the classic Rothampstead experiments in England where arable land was allowed to revert to deciduous temperate woodland, soil organic carbon increased 300 - 400 % from around 20 t / ha to 60 - 80 t / ha (or about 20 - 40 tons per acre) in less than a century (Jenkinson & Rayner 1977).

When done so, proxy records and climate models indicate that the response to past global warming was profound, with evidence for global reorganisation of the hydrological cycle and profound local increases and decreases in rainfall; combined with elevated temperatures and terrestrial vegetation change, this appears to often result in warming - enhanced soil organic matter oxidation, chemical weathering and nutrient cycling.

As such black carbon (BC) significantly affects soil fertility and interferes with models on soil organic matter dynamics, an accurate prediction of BC input into soils and an elucidation of the mechanisms of BC turnover is essential.

Northern peatlands, typical for subarctic Scandinavia and Russia, contain one third of the world's soil organic carbon.

We found that soil warming results in a four - phase pattern of soil organic matter decay and carbon dioxide fluxes to the atmosphere, with phases of substantial soil carbon loss alternating with phases of no detectable loss.

Increasing soil organic carbon by improved management can help maintain productivity in drier conditions.

Soil organic matter loss, CO2 release factors and mitigation measures have been identified in the following studies.

This first - ever soil organic carbon map developed through an inclusive and country - driven process was supported by FAO's Intergovernmental Technical Panel on Soils.

The next step is for countries to move into monitoring soil organic carbon levels using their national soil information systems to make evidence - based decisions on how to manage their soils and monitor the impact of those actions.

On the other hand, evidence for region - specific increases in productivity and even community compositional change due to rising atmospheric CO2 was reported, with associated increased biomass and soil organic matter.

Forest regrowth may account for a large part of the land carbon sink in some regions (e.g., Pacala et al., 2001; Schimel et al., 2001; Hurtt et al., 2002; Sitch et al., 2005), while combustion of vegetation and soil organic matter may be responsible for a significant fraction of the interannual variability in CO2 (Cochrane, 2003; Nepstad et al., 2004; Kasischke et al., 2005; Randerson et al., 2005).

Fertility as more N is applied more residue is produced and more carbon is sequestered, Janzen (1987); Rasmusson and Rohde (1988); Campbell et al. (1991a); Ismail et al. (1994); Solberg et al. (1995); except where soil organic C is already high, Campbell et al. (1991 a, b); Nyborg et al. (1995).

Soil organic matter, with carbon as its main component, is crucial to soil health and fertility, water infiltration and retention as well as food production.

«We're managing our soil organic matter in totally different ways,» said owner Matt Ramsay.

The Microbial Efficiency - Matrix Stabilization (MEMS) framework integrates plant litter decomposition with soil organic matter stabilization: Do labile plant inputs form stable soil organic matter?

for article Chinese Grain for Green Program led to highly increased soil organic carbon levels: A meta - analysis.

Interest in high - latitude methane and carbon cycles is motivated by the existence of very large stores of carbon (C), in potentially labile reservoirs of soil organic carbon in permafrost (frozen) soils and in methane - containing ices called methane hydrate or clathrate, especially offshore in ocean marginal sediments.

Earth system models disagree on the fate of soil organic carbon under climate change.

The USDA organic regulations recognize the risk of heavy metal contamination at § 205.203 (c): «The producer must manage plant and animal materials to maintain or improve soil organic matter content in a manner that does not contribute to contamination of crops, soil, or water by plant nutrients, pathogenic organisms, heavy metals, or residues of prohibited substances.»

They discovered that land - use change and grazing regimes with low forage allowances tend to boost soil erosion and reduce soil organic carbon stocks and the diversity of plants, birds and mammals.

Carbon pool - Carbon pools are: above - ground biomass, belowground biomass, litter, dead wood and soil organic carbon.

I know it sounds crazy, but «shelf life» is another term in disguise for soil organic carbon partition coefficient and hydraulic residency.

The methodology quantifies increased carbon sequestration in aboveground biomass, belowground biomass, and soil organic carbon over and above the baseline scenario.

We found that several regenerative scenarios could translate to reduced soil erosion, fertilizer loss, and pollution, as well as increased soil organic matter, resilience to extreme weather, and potentially even more profits for farmers.

Not accounting for these volumes can result in overestimating soil organic carbon by over 40 % at some sites.

To determine how much carbon is released by erosion, the researchers combined their soil organic carbon calculations with long - term erosion rates (the region loses a mean of 0.7 meters of coastline per year).

... in seeking to maximize yields to meet growing global food demand, has caused loss of soil organic carbon (SOC) and compaction, impairing critical regulating and supporting ecosystem services upon which humans also depend.

We've heard that a director at the Department of Agriculture advised her team that carbon - sequestration and greenhouse - gas reduction should instead be described as «building soil organic matter» and «increasing nutrient use efficiency.»

They aim to restore soil organic content in grazing and cropping lands by 4 parts in a 1000 per year.

On average, lakes have decreased in area in the last 50 years in the southern two - thirds of Alaska, 102,103,87,88 due to a combination of permafrost thaw, greater evaporation in a warmer climate, and increased soil organic accumulation during a longer season for plant growth.

Keywords Soil carbon, soil organic matter, sequestration, humic substances, humin, land management, tillage practices, soil carbon models, Kyoto Protocol

These regions are crucial to the global carbon cycle because they are rich in soil organic carbon, which has built up in frozen soils and peat layers over thousands of years.

Sequestration types include soil organic carbon (SOC), aboveground biomass (AGB), or both.

Study reveals that nitrogen fertilizers deplete soil organic carbon Study reveals that nitrogen fertilizers deplete soil organic carbon University of Illinois at Urbana - Champaign October 30, 2007 The common practice of...

soil erodibility changes due to a decrease in soil organic matter concentrations (which lead to a soil structure that is more susceptible to erosion) and to increased runoff (due to increased soil surface sealing and crusting);

Moreover, 60 percent of that came not from the burning of surface trees or plants but from the combustion of «soil organic matter.»

Maintaining and increasing soil organic carbon in agricultural systems is the option with the largest mitigation option in agriculture (Smith et al., 2008).

(US Department of Energy) ■» Soil organic carbon is the largest reservoir in interaction with the atmosphere.»

(Extent of Northern Hemisphere 1 meter soil organic carbon store in the now thawing and burning permafrost.

This is possible with the most modern agricultural systems that restore soil organic content.

Over the years, FST has demonstrated the potential of organic farming practices by measuring soil organic matter (SOM), yields, profits, energy inputs, and greenhouse gas emissions.

Biosphere (terrestrial and marine)- The part of the Earth system comprising all ecosystems and living organisms, in the atmosphere, on land (terrestrial biosphere) or in the oceans (marine biosphere), including derived dead organic matter, such as litter, soil organic matter and oceanic detritus.

However, if yearly payments could be made on the basis of measured soil organic matter, rather than merely the withdrawal of the land for economic use, we would see much more wildlife habitat created, more grassfed beef raised, better water quality, a more secure income for landowners based on stewardship, and perhaps less conversion to monocrop grain production.