Arid
DOI10.1002/2014WR015515
Tree-grass competition for soil water in arid and semiarid savannas: The role of rainfall intermittency
D’Onofrio, Donatella1,2; Baudena, Mara3; D’Andrea, Fabio4; Rietkerk, Max3; Provenzale, Antonello2
通讯作者D’Onofrio, Donatella
来源期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2015
卷号51期号:1页码:169-181
英文摘要

Arid and semiarid savannas are characterized by the coexistence of trees and grasses in water limited conditions. As in all dry lands, also in these savannas rainfall is highly intermittent. In this work, we develop and use a simple implicit-space model to conceptually explore how precipitation intermittency influences tree-grass competition and savanna occurrence. The model explicitly includes soil moisture dynamics, and life-stage structure of the trees. Assuming that water availability affects the ability of both plant functional types to colonize new space and that grasses outcompete tree seedlings, the model is able to predict the expected sequence of grassland, savanna, and forest along a range of mean annual rainfall. In addition, rainfall intermittency allows for tree-grass coexistence at lower mean annual rainfall values than for constant precipitation. Comparison with observations indicates that the model, albeit very simple, is able to capture some of the essential dynamical processes of natural savannas. The results suggest that precipitation intermittency affects savanna occurrence and structure, indicating a new point of view for reanalyzing observational data from the literature.


英文关键词savanna tree life-stage structure water competition precipitation implicit-space models
类型Article
语种英语
国家Italy ; Netherlands ; France
收录类别SCI-E
WOS记录号WOS:000349889800010
WOS关键词AFRICAN SAVANNAS ; TROPICAL FOREST ; WOODY COVER ; VEGETATION ; FIRE ; COEXISTENCE ; ECOSYSTEMS ; CLIMATE ; GROWTH ; VARIABILITY
WOS类目Environmental Sciences ; Limnology ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/190785
作者单位1.Univ Turin, Dept Phys, Turin, Italy;
2.CNR, Ist Sci Atmosfera & Clima, I-10126 Turin, Italy;
3.Univ Utrecht, Copernicus Inst Sustainable Dev, Utrecht, Netherlands;
4.Ecole Normale Super, Lab Meteorol Dynam, F-75231 Paris, France
推荐引用方式
GB/T 7714
D’Onofrio, Donatella,Baudena, Mara,D’Andrea, Fabio,et al. Tree-grass competition for soil water in arid and semiarid savannas: The role of rainfall intermittency[J],2015,51(1):169-181.
APA D’Onofrio, Donatella,Baudena, Mara,D’Andrea, Fabio,Rietkerk, Max,&Provenzale, Antonello.(2015).Tree-grass competition for soil water in arid and semiarid savannas: The role of rainfall intermittency.WATER RESOURCES RESEARCH,51(1),169-181.
MLA D’Onofrio, Donatella,et al."Tree-grass competition for soil water in arid and semiarid savannas: The role of rainfall intermittency".WATER RESOURCES RESEARCH 51.1(2015):169-181.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[D’Onofrio, Donatella]的文章
[Baudena, Mara]的文章
[D’Andrea, Fabio]的文章
百度学术
百度学术中相似的文章
[D’Onofrio, Donatella]的文章
[Baudena, Mara]的文章
[D’Andrea, Fabio]的文章
必应学术
必应学术中相似的文章
[D’Onofrio, Donatella]的文章
[Baudena, Mara]的文章
[D’Andrea, Fabio]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。