干旱区生态环境知识资源中心(Arid): Native pastures and beef cattle show a spatially variable response to a changing climate in Queensland, Australia

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DOI	10.1016/j.eja.2020.126002
	Native pastures and beef cattle show a spatially variable response to a changing climate in Queensland, Australia
	Cobon, David H.1; Stone, Grant 2; Carter, John 2; McKeon, Greg 2; Zhang, Baisen 2; Heidemann, Hanna 1
通讯作者	Cobon, David H.
来源期刊	EUROPEAN JOURNAL OF AGRONOMY
ISSN	1161-0301
EISSN	1873-7331
出版年	2020
卷号	114
英文摘要	Queensland's rangelands are an important source for Australia's pastoral food production. However, they are subject to significant climate variability and will be under increasing pressure as the climate changes, potentially leading to loss of productivity. Pasture growth fluctuates greatly due to rainfall variability, which unfortunately is the climate variable with the largest uncertainties in future projections for northern and eastern Australia. This sensitivity study examines the effect of climate change and its interaction with soil fertility and trees on pasture and livestock production in Queensland. Nine climate change sensitivities were tested in various combinations; an increase in air temperatures by a median projected value of +3 degrees C, rainfall changes of -20 %, -10 % and + 10 % and an increase of carbon dioxide concentrations to 700 ppm. The GRASP model was used to assess the responses of pasture growth, pasture quality and cattle liveweight change per head. The most arid areas in western and south-western Queensland were the most sensitive to changes in rainfall. In contrast, the tropical north was the most resilient region. Southern and south-eastern Queensland benefitted from higher air temperatures producing greater pasture growth, quality and liveweight gain per head by extending the growing season and reducing frost during the winter months. The presence of trees competing for water and nitrogen increased the sensitivity of pasture to climate change, especially at higher carbon dioxide levels and lower rainfall. Increased carbon dioxide enhanced pasture growth and mitigated rainfall reductions by improving the water use efficiency of the plants. Thus, a warmer climate may create new opportunities in the south and south-east, but a warmer and drier climate in the western regions of Queensland is likely to reduce pasture and livestock production.
英文关键词	Climate variability CO2 Forage production Liveweight gain Rangelands Vulnerability
类型	Article
语种	英语
国家	Australia
收录类别	SCI-E
WOS记录号	WOS:000517849700004
WOS关键词	LIVESTOCK PRODUCTION ; CHANGE IMPACTS ; MANAGEMENT ; GROWTH ; VARIABILITY ; ADAPTATION ; RANGELANDS ; RAINFALL ; INDUSTRY ; SAVANNA
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314486
作者单位	1.Univ Southern Queensland, Ctr Appl Climate Sci, West St, Toowoomba, Qld 4350, Australia; 2.Grazing Land Syst, Dept Environm & Sci, 41 Boggo Rd, Dutton Pk, Qld 4102, Australia
推荐引用方式 GB/T 7714	Cobon, David H.,Stone, Grant,Carter, John,et al. Native pastures and beef cattle show a spatially variable response to a changing climate in Queensland, Australia[J],2020,114.
APA	Cobon, David H.,Stone, Grant,Carter, John,McKeon, Greg,Zhang, Baisen,&Heidemann, Hanna.(2020).Native pastures and beef cattle show a spatially variable response to a changing climate in Queensland, Australia.EUROPEAN JOURNAL OF AGRONOMY,114.
MLA	Cobon, David H.,et al."Native pastures and beef cattle show a spatially variable response to a changing climate in Queensland, Australia".EUROPEAN JOURNAL OF AGRONOMY 114(2020).