Nitrogen cycle model of agroecosystem in the karst region of Guizhou Province |
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| Authors: | Ye Chen Bin Lian |
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| Institution: | (1) Key Laboratory of Analysis and Simulation of Earth Surface Processes, Ministry of Education, Department of Geography, Peking University, Beijing, 100871, China;(2) Peking University, Room 3357, YiFu Building 2, Beijing, 100871, China; |
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| Abstract: | According to the transport theory of soil solutes and the conditions of soil, geology and climate in the karst region of Guizhou
Province, a numerical simulation model of edaphic nitrogen element transport under field conditions is initially established.
In this model, NO?
3 and NH+
4 are regarded as soil solutes. Transformation mechanisms such as biological release, bio-immobilization, ammonium adsorption-desorption,
nitration-denitrification and factors of crop root uptaking are considered in this model. It is hoped that the data from this
model could directly be used to guide agricultural production in this region and offer feasible ways to improve the use of
nitrogen element, sustainable development of agriculture in karst mountainous areas and natural environment. |
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| Keywords: | |
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