Regular and Irregular Vegetation Pattern Formation in Semiarid Regions: A Study on Discrete Klausmeier Model
Regular and Irregular Vegetation Pattern Formation in Semiarid Regions: A Study on Discrete Klausmeier Model
复制标题
半干旱地区规则和不规则植被格局的形成:离散Klausmeier模型研究
DOI:
10.1155/2020/2498073
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发表时间:
2020-01
期刊:
影响因子:
2.3
通讯作者:
Zhang Xiumin
中科院分区:
文献类型:
--
作者:
Zhang Huayong;Huang Tousheng;Dai Liming;Pan Ge;Liu Zhao;Gao Zichun;Zhang Xiumin
The research on regular and irregular vegetation pattern formation in semiarid regions is an important field in ecology. Applying the framework of coupled map lattice, a novel nonlinear space- and time-discrete model is developed based on discretizing the classical Klausmeier model and the vegetation pattern formation in semiarid regions is restudied in this research. Through analysis of Turing-type instability for the discrete model, the conditions for vegetation pattern formation are determined. The discrete model is verified by Klausmeier’s results with the same parametric data, and shows advantages in quantitatively describing diverse vegetation patterns in semiarid regions, such as the patterns of regular mosaicirregular patches, stripes, fractured stripesspots, and stripes-spots, in comparing with former theoretical models. Moreover, the discrete model predicts variations of rainfall and vegetation types can cause transitions of vegetation patterns. This research demonstrates that the nonlinear mechanism of the discrete model better captures the diversity and complexity of vegetation pattern formation in semiarid regions.
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影响因子:
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作者:
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发表时间:
2014
期刊:
Math. Comput. Simul.
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