Sentences with phrase «nitrogen inputs»

In the simulations, those soil emissions were particularly sensitive to two factors: climate, especially temperature, and rates of nitrogen input.

The fact that organic systems are based on lower nitrogen inputs, closed nutrient cy - cles and combined animal and plant production needs to be accounted for, and this requires a holis - tic perspective on the accounting of greenhouse gas emissions from farming systems.

Nutrient reduction plans, implemented since 1987, have reduced nitrogen inputs by 50 % (Carstensen et al. 2006), but primary production remains high (Carstensen et al. 2011).

To test this idea, she and her colleagues used a model that takes into account nitrogen input, climate, soil moisture levels and other factors to predict soil microbes» production of the gases.

Human activity increases the amount of nitrogen that reaches the oceans by 50 %, on top of natural processes, according to a new report which assesses the magnitude and impacts of anthropogenic atmospheric nitrogen inputs to the ocean.

In organic agriculture, nitrogen input stems from the use of nitrogen fixing leguminous plants and the application of manure and compost.

The increase in surface pH before ca. 1985 is consistent with the trend in nitrogen inputs (Conley et al. 2009), whereas the subsequent decrease can be explained by enhanced ecosystem respiration.

Less acidity and lower nitrogen inputs have allowed sensitive aquatic species to be maintained in the Sierra Nevada lakes.

Adaptation is further supported by increased agro-ecosystem diversity of organic farms, based on management decisions, reduced nitrogen inputs and the absence of chemical pesticides.

The project will look for synergies between water and nitrogen inputs, quantifying the rate and timing of nitrogen supply through mineralization; assessing the cost effectiveness of enhanced efficiency fertilizers; and evaluating new digital, precision and spatial technologies.

N2O emissions from soils are due to the unproductive loss of mobile N. Any nitrogen input (mineral and organic fertilizers, biologically fixed N, crop residues) and also the mineralization of nitrogen compounds in soils rich in organic matter contribute to the emission of N2O.