`Winter weeds add organic matter to soil in orchards
نویسندگان
چکیده
منابع مشابه
Soil Β-glucosidase Activity under Winter Wheat Cultivated in Crop Rotation Systems Depleting and Enriching the Soil in Organic Matter
β-glucosidase (E.C. 3.2.1.21), an enzyme involved in cellulose degradation, plays an important role in the soil organic carbon cycle. Cellulose is the most abundant organic compound in the biosphere so a product of its enzymatic hydrolysis is important as an energy source for soil microorganisms. Since β-glucosidase is very sensitive to different factors, determination of its activity might be ...
متن کاملSoil Organic Matter: Its Fractionation and Role in Soil Structure
An understanding of the form and function of SOM in soil is essential to sustainable crop production. Various methods of SOM fractionation are used to study SOM forms and to gain an understanding of interaction between SOM and aggregate formation. Physical SOM fractionation techniques are based on the concept that SOM associated with particles of various sizes. differs in structure and function...
متن کاملSorption of organic chemicals to soil organic matter: influence of soil variability and pH dependence.
For modeling the sorption of organic compounds in soils it is typically assumed that the organic carbon/water partitioning coefficient (Koc) of neutral organic chemicals can be treated as a constant property that remains unaffected by the type of soil organic matter as well as pH in the soil solution. Here the validity of these assumptions is evaluated with a large and diverse experimental data...
متن کاملIs resistant soil organic matter more sensitive to temperature than the labile organic matter?
A recent paper by Knorr et al. (2005a) suggested that the decomposition of resistant soil organic matter is more temperature sensitive than labile organic matter. In Knorr et al.’s (2005a) model, the reference decay rate was presumed to be same for all pools of soil carbon. We refit Knorr et al.’s (2005a) model but allow both the activation energy and the reference decay rate to vary among soil...
متن کاملTemperature sensitivity of resistant soil organic matter
On the available evidence for the temperature dependence of soil organic carbon W. Knorr, I. C. Prentice, J. I. House, and E. A. Holland QUEST, Department of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK National Center for Atmospheric Research, Boulder, Colorado, USA Received: 3 June 2005 – Accepted: 22 June 2005 – Published: 1 July 2005 Correspondence to: W. Knorr (wolfgang.knorr...
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ژورنال
عنوان ژورنال: Journal of Earth Science & Climatic Change
سال: 2017
ISSN: 2157-7617
DOI: 10.4172/2157-7617-c1-030