干旱区生态环境知识资源中心(Arid): Determining water requirements for Black Box (Eucalyptus largiflorens) floodplain woodlands of high conservation value using drip-irrigation

Arid

DOI	10.1002/hyp.14291
	Determining water requirements for Black Box (Eucalyptus largiflorens) floodplain woodlands of high conservation value using drip-irrigation
	Doody, Tanya M.; Gehrig, Susan L.; Vervoort, R. Willem; Colloff, Matthew J.; Doble, Rebecca
通讯作者	Doody, TM (corresponding author), CSIRO Land & Water, Waite Campus, Adelaide, SA 5064, Australia.
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2021
卷号	35 期号:7
英文摘要	Black Box (Eucalyptus largiflorens F. Muell.), is a keystone tree species of lowland semi-arid floodplain ecosystems in south-eastern Australia. E. largiflorens woodlands are of high conservation value and threatened by climate change-induced drought and irrigation water diversions due to their location on upper floodplain areas where flood frequency has declined. Water requirements of E. largiflorens have not been well quantified using empirical data. Accordingly, knowledge gaps exist in relation to volumes of environmental water required to maintain and improve ecological condition for disconnected floodplain woodlands. To further assist conservation and water resource management, we tested the use of drip irrigation to provide a variety of water regimes to experimental plots in order to monitor tree responses. Water was provided via irrigation delivery across four regimes representing known volumes of water, referred to as an environmental water provision, applied over a 22-week period for two Austral summers. Benefits to trees were identified by measuring transpiration and plant water status using sap flow sensors and a Scholander pressure chamber, respectively. Results indicate that volumes of 0.3, 0.4, 0.7 and 0.8 ML increased transpiration and improved plant water status in comparison to a control, with delivery recommended to commence early autumn. Greater volumes (1.4 ML), substantially increased transpiration and improved water status, especially when delivered at a rate of similar to 25 mm week(-1) compared to a monthly 'burst' which broadly represented natural, sporadic summer rainfall in the region. For an environmental watering provision of 25 mm week(-1), similar to 178 ha of E. largiflorens woodland can be watered with a 1 GL environmental water allocation. The study methods presented are relevant worldwide and our results further the collective understanding of the benefits environmental water provides to E. largiflorens.
英文关键词	black box drought environmental water Murray-Darling Basin transpiration vegetation health water potential water stress
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000678409000001
WOS关键词	RIVER RED GUM ; ENVIRONMENTAL FLOWS ; REGULATED RIVER ; MURRAY ; ECOSYSTEMS ; MANAGEMENT ; VEGETATION ; AUSTRALIA ; TREE ; CAMALDULENSIS
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368631
作者单位	[Doody, Tanya M.; Doble, Rebecca] CSIRO Land & Water, Waite Campus, Adelaide, SA 5064, Australia; [Gehrig, Susan L.] Flora Flow & Floodplains, Mildura, Vic, Australia; [Gehrig, Susan L.] South Australian Res & Dev Inst, Dept Aquat Sci, Adelaide, SA, Australia; [Vervoort, R. Willem] Univ Sydney, Sch Life & Environm Sci, Sydney, NSW, Australia; [Colloff, Matthew J.] Australian Natl Univ, Fenner Sch Environm & Soc, Canberra, ACT, Australia
推荐引用方式 GB/T 7714	Doody, Tanya M.,Gehrig, Susan L.,Vervoort, R. Willem,et al. Determining water requirements for Black Box (Eucalyptus largiflorens) floodplain woodlands of high conservation value using drip-irrigation[J]. Commonwealth Scientific and Industrial Research Organisation,2021,35(7).
APA	Doody, Tanya M.,Gehrig, Susan L.,Vervoort, R. Willem,Colloff, Matthew J.,&Doble, Rebecca.(2021).Determining water requirements for Black Box (Eucalyptus largiflorens) floodplain woodlands of high conservation value using drip-irrigation.HYDROLOGICAL PROCESSES,35(7).
MLA	Doody, Tanya M.,et al."Determining water requirements for Black Box (Eucalyptus largiflorens) floodplain woodlands of high conservation value using drip-irrigation".HYDROLOGICAL PROCESSES 35.7(2021).