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Modelling tree-grass coexistence in water-limited ecosystems
Ying, Zhixia1,2; Liao, Jinbao3; Liu, Yongjie4; Wang, Shichang5; Lu, Hui1,6; Ma, Liang6,7; Chen, Dongdong1,6; Li, Zhenqing1,6
2017-09-24
Source PublicationECOLOGICAL MODELLING
ISSN0304-3800
Volume360Pages:387-398
Corresponding AuthorLi, Zhenqing(lizq@ibcas.ac.cn)
AbstractTree-grass coexistence is commonly observed in arid and semi-arid ecosystems. Many of these ecosystems are undergoing a shift from grassland to tree dominance or the opposite. Therefore, exploring the mechanism of tree-grass coexistence and studying how ecosystems respond to environmental change are critical to understanding such shift. We construct a tree-grass-water model by considering the Walter's two layer hypothesis, i.e., the grass species only access to the shallow soil water, while the tree can uptake both the shallow and deep soil water. Results show that the tree-grass coexistence region increases with increasing their niche separation. Hence, the vertical niche separation between trees and grass with respect to limiting water resources might be one of mechanisms for tree-grass coexistence. Besides, both tree and grass display positive responses to precipitation, but surprisingly, there exists a catastrophe that the mean vegetation density first rapidly increases, but then quickly decreases as precipitation increases in the tree-grass-water model with infiltration feedback. Most likely, this catastrophe is due primarily to the periodical fluctuation of vegetation density and water caused by its intrinsic infiltration feedback. Overall, our study provides new insights into the dynamics of tree-grass in arid and semi-arid ecosystems. (C) 2017 Elsevier B.V. All rights reserved.
KeywordDynamic model Niche separation Periodic fluctuation Walter's two layer hypothesis
DOI10.1016/j.ecolmodel.2017.07.014
WOS KeywordNORTH-AMERICAN GRASSLANDS ; WOODY PLANT ENCROACHMENT ; SHRUB ENCROACHMENT ; SAVANNA ECOSYSTEMS ; AFRICAN SAVANNAS ; GRAZING SYSTEMS ; VEGETATION ; DYNAMICS ; PRECIPITATION ; STABILITY
Indexed BySCI
Language英语
Funding ProjectNational Key Basic Research Program of China[2013CB429905] ; National Natural Science Foundation of China[41571505] ; Science and Technology Project of Jiangxi Provincial Water Resources Department[KT201505] ; China Scholarship Council (CSC)
Funding OrganizationNational Key Basic Research Program of China ; National Natural Science Foundation of China ; Science and Technology Project of Jiangxi Provincial Water Resources Department ; China Scholarship Council (CSC)
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
WOS IDWOS:000411771800035
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/62318
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi, Zhenqing
Affiliation1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Nanchang Univ, Coll Life Sci, Poyang Lake Key Lab Environm & Resource Utilizat, Minist Educ, Nanchang 330031, Jiangxi, Peoples R China
3.Jiangxi Normal Univ, Minist Educ, Key Lab Poyang Lake Wetland & Watershed Res, Nanchang 330022, Jiangxi, Peoples R China
4.Univ Antwerp, Dept Biol, Ctr Excellence Plants & Ecosyst, B-2610 Antwerp, Belgium
5.Chinese Acad Sci, Inst Zool, Key Lab Anim Ecol & Conservat Biol, Beijing, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Ying, Zhixia,Liao, Jinbao,Liu, Yongjie,et al. Modelling tree-grass coexistence in water-limited ecosystems[J]. ECOLOGICAL MODELLING,2017,360:387-398.
APA Ying, Zhixia.,Liao, Jinbao.,Liu, Yongjie.,Wang, Shichang.,Lu, Hui.,...&Li, Zhenqing.(2017).Modelling tree-grass coexistence in water-limited ecosystems.ECOLOGICAL MODELLING,360,387-398.
MLA Ying, Zhixia,et al."Modelling tree-grass coexistence in water-limited ecosystems".ECOLOGICAL MODELLING 360(2017):387-398.
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