干旱区生态环境知识资源中心(Arid): Spatiotemporal dynamics of a vegetation model with nonlocal delay in semi-arid environment

Arid

DOI	10.1007/s11071-020-05486-w
	Spatiotemporal dynamics of a vegetation model with nonlocal delay in semi-arid environment
	Xue, Qiang 1,2,3,4; Sun, Gui-Quan 3,4; Liu, Chen 5; Guo, Zun-Guang 1,2; Jin, Zhen 3; Wu, Yong-Ping 6; Feng, Guo-Lin 6,7
通讯作者	Sun, Gui-Quan
来源期刊	NONLINEAR DYNAMICS
ISSN	0924-090X
EISSN	1573-269X
出版年	2020
卷号	99 期号:4 页码:3407-3420
英文摘要	Vegetation patterns can reflect the spatial distribution of vegetation in both space and time. In semi-arid regions, the absorption of water by vegetation is a nonlocal process meaning that its roots can absorb water from themselves throughout the region. However, the effects of the nonlocal interaction on the distribution of vegetation pattern are not clear. In this paper, a dynamical model of vegetation pattern with nonlocal delay is investigated. Through the analysis of Turing instability, we obtain the conditions for the generation of stationary patterns. By numerical simulations, various spatial distribution of vegetation in semi-arid areas are qualitatively depicted. It is found that the stripe intervals in pattern decrease with the increase in the intensity of nonlocal delay effect, and then a dot-line mixed pattern appears, which eventually evolves into a high-density dot pattern. This indicates that vegetation has evolved from low-density stripe distribution to high-density point distribution. The results show that the nonlocal delay effect enhances vegetation biomass. Therefore, we can take measures to increase the intensity of nonlocal delay effect to increase vegetation density, which theoretically provides new guidance for vegetation protection and desertification control.
英文关键词	Bifurcation Pattern stability Time delay
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000524454800052
WOS关键词	GLOBAL TERRESTRIAL ECOSYSTEMS ; PATTERN-FORMATION ; TIME-DELAY ; SYSTEM ; IMPACT ; DESERTIFICATION ; ORGANIZATION ; BIFURCATION ; INHIBITION ; PATCHINESS
WOS类目	Engineering, Mechanical ; Mechanics
WOS研究方向	Engineering ; Mechanics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315237
作者单位	1.North Univ China, Dept Comp Sci & Technol, Taiyuan 030051, Shanxi, Peoples R China; 2.North Univ China, Data Sci & Technol, Taiyuan 030051, Shanxi, Peoples R China; 3.North Univ China, Dept Math, Taiyuan 030051, Shanxi, Peoples R China; 4.Shanxi Univ, Complex Syst Res Ctr, Taiyuan 030006, Shanxi, Peoples R China; 5.Northwestern Polytech Univ, Ctr Ecol & Environm Sci, Xian 710072, Peoples R China; 6.Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225002, Jiangsu, Peoples R China; 7.China Meteorol Adm, Natl Climate Ctr, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Xue, Qiang,Sun, Gui-Quan,Liu, Chen,et al. Spatiotemporal dynamics of a vegetation model with nonlocal delay in semi-arid environment[J],2020,99(4):3407-3420.
APA	Xue, Qiang.,Sun, Gui-Quan.,Liu, Chen.,Guo, Zun-Guang.,Jin, Zhen.,...&Feng, Guo-Lin.(2020).Spatiotemporal dynamics of a vegetation model with nonlocal delay in semi-arid environment.NONLINEAR DYNAMICS,99(4),3407-3420.
MLA	Xue, Qiang,et al."Spatiotemporal dynamics of a vegetation model with nonlocal delay in semi-arid environment".NONLINEAR DYNAMICS 99.4(2020):3407-3420.