Arid
DOI10.1007/s11104-008-9558-8
Forest-scale sap flux responses to rainfall in a dryland eucalyptus plantation
Morgan, Huw D.; Barton, Craig V. M.
通讯作者Morgan, Huw D.
来源期刊PLANT AND SOIL
ISSN0032-079X
EISSN1573-5036
出版年2008
卷号305期号:1-2页码:131-144
英文摘要

Dryland salinity is caused by rising saline water tables, the result of relatively recent landscape-scale clearance of deep-rooted vegetation. One obvious solution to this problem is the reintroduction of deep-rooted vegetation into these landscapes, most likely non-deciduous trees. Ideally, continually-transpiring deep-rooted trees would remove moisture from throughout the soil profile, increasing the capacity of the soil to store water, thus lowering water tables by effectively reducing the number of rainfall events that contribute to groundwater recharge. In this study, we examined how water use by a Eucalyptus sideroxylon A. Cunn. ex Woolls plantation, growing in a salinity-prone landscape, varied in response to rainfall events across four years of sap flux monitoring. Responses of the plantation were observed across multiple seasons, from above average to well below average rainfall. We observed that the plantation forest, while capable of continuous water use during drought, was also quite responsive to rainfall events. During the driest periods, during which shallow soil moisture was reduced to a stable minimum, the forest continued using water at around 1 mm/day. Generally we observed increases in forest water use following only 5 mm of rainfall, in contrast to 20 mm for neighbouring native vegetation. We compared a range of plausible empirical models for describing forest water use responses to rainfall. The best model demonstrated that rainfall size, post-rainfall PET and the interaction between rainfall size and antecedent soil moisture made significant contributions to variation in forest water use across rainfall events. Interestingly, the model showed that all else equal, higher antecedent soil moisture tended to reduce potential increases in forest water use in response to rainfall.


英文关键词sap flow rainfall pulse rainfall response antecedent soil moisture dryland salinity
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000254205100012
WOS关键词COLD DESERT COMMUNITY ; WATER-USE ; SUMMER PRECIPITATION ; ARTEMISIA-TRIDENTATA ; CANOPY CONDUCTANCE ; TREES ; TRANSPIRATION ; PULSES ; ECOSYSTEMS ; AUSTRALIA
WOS类目Agronomy ; Plant Sciences ; Soil Science
WOS研究方向Agriculture ; Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/158838
作者单位Forest Sci Ctr, NSW Dept Primary Ind, Beecroft, NSW 2119, Australia
推荐引用方式
GB/T 7714
Morgan, Huw D.,Barton, Craig V. M.. Forest-scale sap flux responses to rainfall in a dryland eucalyptus plantation[J],2008,305(1-2):131-144.
APA Morgan, Huw D.,&Barton, Craig V. M..(2008).Forest-scale sap flux responses to rainfall in a dryland eucalyptus plantation.PLANT AND SOIL,305(1-2),131-144.
MLA Morgan, Huw D.,et al."Forest-scale sap flux responses to rainfall in a dryland eucalyptus plantation".PLANT AND SOIL 305.1-2(2008):131-144.
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
[Morgan, Huw D.]的文章
[Barton, Craig V. M.]的文章
百度学术
百度学术中相似的文章
[Morgan, Huw D.]的文章
[Barton, Craig V. M.]的文章
必应学术
必应学术中相似的文章
[Morgan, Huw D.]的文章
[Barton, Craig V. M.]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。