 A dynamic root simulation model in response to soil moisture heterogeneitySongyang Li, Jixun Gao, Qingsheng Zhu, Lingqiu Zeng and Ji Liu Mathematics and Computers in Simulation (MATCOM), 2015, vol. 113, issue C, 40-50 Abstract: A three-dimensional dynamic model which is combined with root-system development and water extraction is proposed to simulate the interaction between root growth and soil–water flow. Hydrotropism is considered as one controlling factor of root growth in the model. In the paper, the dynamic root model is simulated based on L-systems. The space colonization algorithm is employed to compute hydrotropism caused by soil moist gradient. The soil–water flow, caused by water extraction rather than by evaporation and irrigation, is solved by finite-element method. A root simulation study is presented for water uptake by a maize root system. Effects of hydrotropism on root are demonstrated. The results show that the proposed method can couple root development to surroundings and analyze effects of hydrotropism to water uptake and root length fraction. Based on grid technology, the proposed method can provide a flexible root model which can be easily coupled with soil processes. Keywords: L-systems; Hydrotropism; Space colonization; Water extraction; Root simulation (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:matcom:v:113:y:2015:i:c:p:40-50 DOI: 10.1016/j.matcom.2014.11.030 Access Statistics for this article Mathematics and Computers in Simulation (MATCOM) is currently edited by Robert Beauwens More articles in Mathematics and Computers in Simulation (MATCOM) from Elsevier |
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