干旱区生态环境知识资源中心(Arid): Intermediately Complex Models for the Hydrological Interactions in the Atmosphere-Vegetation-Soil System

Arid

DOI	10.1007/s00376-006-0013-6
	Intermediately Complex Models for the Hydrological Interactions in the Atmosphere-Vegetation-Soil System
	Zeng Xiaodong; Wang Aihui; Zeng Qingcun; Robert E. Eickinson; Xubin Zeng; Samuel S. P. Shen
来源期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
出版年	2006
卷号	23 期号:1 页码:127-140
英文摘要	This paper investigates the hydrological interactions in the atmosphere-evegetation-soil system by using the bucket model and several new simplified intermediately complex models. The results of mathematical analysis and numerical simulations show that these models, despite their simplicity, can very clearly reveal the essential features of the rather complex hydrological system of atmosphere-ecosystem-soil. For given atmospheric variables, these models clearly demonstrate multiple timescales, the ＂red shift＂ of response spectra, multi-equilibria and limit cycles, bifurcation, abrupt change, self-organization, recovery, ＂desertification＂, and chaos. Most of these agree with observations. Especially, the weakening of ＂shading effect＂ of living canopy and the wilted biomass might be a major mechanism leading to the desertification in a relatively short period due to overgrazing, and the desertification in a relatively long period or in climate of change might be due to both Charney＇s mechanism and the shading effect. These ideas could be validated with further numerical simulations. In the paper, some methods for improving the estimation of timescales in the soil water evolution responding to the forcing are also proposed.
英文关键词	Atmosphere-vegetation-soil system hydrological process multi-equilibria chaos desertification shading effect
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:2621114
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334923
作者单位	Zeng Xiaodong, The University of Arizona Tucson, USA.; Wang Aihui, The University of Arizona Tucson, USA.; Xubin Zeng, The University of Arizona Tucson, USA.; Zeng Qingcun, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing China.; Robert E. Eickinson, Georgia Institute of Technology, USA.; Samuel S. P. Shen, University of Alberta, Canada.
推荐引用方式 GB/T 7714	Zeng Xiaodong,Wang Aihui,Zeng Qingcun,et al. Intermediately Complex Models for the Hydrological Interactions in the Atmosphere-Vegetation-Soil System[J],2006,23(1):127-140.
APA	Zeng Xiaodong,Wang Aihui,Zeng Qingcun,Robert E. Eickinson,Xubin Zeng,&Samuel S. P. Shen.(2006).Intermediately Complex Models for the Hydrological Interactions in the Atmosphere-Vegetation-Soil System.Advances in Atmospheric Sciences,23(1),127-140.
MLA	Zeng Xiaodong,et al."Intermediately Complex Models for the Hydrological Interactions in the Atmosphere-Vegetation-Soil System".Advances in Atmospheric Sciences 23.1(2006):127-140.