干旱区生态环境知识资源中心(Arid): Modeling of complex ecosystems, extension of deserts and violation of the short water cycle

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DOI	10.1016/j.ecolmodel.2021.109762
	Modeling of complex ecosystems, extension of deserts and violation of the short water cycle
	Bila, Jiri; Pokorny, Jan
通讯作者	Bila, J (corresponding author), Czech Tech Univ, Dept Instrumentat & Control Engn, FME, Tech 4, Prague 16607 6, Czech Republic.
来源期刊	ECOLOGICAL MODELLING
ISSN	0304-3800
EISSN	1872-7026
出版年	2021
卷号	461
英文摘要	The large ecosystems (region, country, and planet) have many properties common with complex systems. The main such characteristics include dynamic instability (e.g. weather dependence), weak causality (many possible causes per event) and event driven behavior (especially in arid and semi-arid areas). This paper focuses attention on modeling ecosystems by approaches used for complex systems. When modeling complex ecosystems, we usually encounter the following difficulties: partiality, large amounts of data and uncertainties of conclusions. It can be said that none of the known approaches solves these difficulties perfectly. The most common is the physical approach, sometimes reinforced by statistical procedures. The physical approach to modeling leads to a complicated description of phenomena associated with relatively simple geometry. A complicated description usually requires a large amount of data (measured or simulated) and thus more complicated calculations. If we assume emergences in the ecosystem, a physical approach is not appropriate at all. In the presented article we apply the approach of so-called structural invariants, which has the opposite properties: a simple description of phenomena associated with a more complex geometry (in our case pre geometry). It does not require as much data and calculations are simple. The price paid is a qualitative interpretation of the results, which carries a special type of uncertainty. The structural invariant used in the article is the invariant Matroid and Bases of Matroid (M, BM) in combination with Ramsey graph theory. In addition, the article introduces a calculus that describes the emergent phenomenon using two quantities - the power of the emergent phenomenon and the complexity of the structure that is associated with this phenomenon. The developed method is used for a novel application of modeling the process of desertification of Earth. In this approach, we understand desertification as an emergent evolutionary operation of the Earth's development. In the sequence of two large previous emergences (warming of the Earth about 11,700 years ago and drying of the earth beginning about 6000 years ago), the time of possible further emergences related to the desert expansion operation is calculated. The second application of the method is the analysis of the operation violation of Short Water Cycle in the landscape and its possible contribution to the desertification.
英文关键词	Modeling of complex ecosystems Structural invariant approach Emergent situations Violations of structural invariants Matroids Matroid bases Desertification Violation of short water cycle
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000704801200001
WOS关键词	CLIMATE-CHANGE ; DESERTIFICATION ; MANAGEMENT ; DYNAMICS ; DROUGHT
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363017
作者单位	[Bila, Jiri] Czech Tech Univ, Dept Instrumentat & Control Engn, FME, Tech 4, Prague 16607 6, Czech Republic; [Pokorny, Jan] ENKI, Ops, Dukelska 145, Trebon 37901, Czech Republic
推荐引用方式 GB/T 7714	Bila, Jiri,Pokorny, Jan. Modeling of complex ecosystems, extension of deserts and violation of the short water cycle[J],2021,461.
APA	Bila, Jiri,&Pokorny, Jan.(2021).Modeling of complex ecosystems, extension of deserts and violation of the short water cycle.ECOLOGICAL MODELLING,461.
MLA	Bila, Jiri,et al."Modeling of complex ecosystems, extension of deserts and violation of the short water cycle".ECOLOGICAL MODELLING 461(2021).