干旱区生态环境知识资源中心(Arid): Response of vegetation cover to climate variability in protected and grazed arid rangelands of South Australia

Arid

DOI	10.1016/j.jaridenv.2018.10.001
	Response of vegetation cover to climate variability in protected and grazed arid rangelands of South Australia
	Long, Xunjian 1,2; Guan, Huade 1; Sinclair, Russell 3; Batelaan, Okke 1; Facelli, Jose M.3; Andrew, Robert L.1; Bestland, Erick 1
通讯作者	Guan, Huade
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2019
卷号	161 页码:64-71
英文摘要	Large-scale drought and wet phases, via ecosystem responses, can significantly influence the global atmospheric carbon budget. Australian landscapes, dominated by arid and semi-arid rangelands, play an important role in this regard. In this study, temporal variation of monthly Normalised Difference Vegetation Index (NDVI) of two rangelands with different grazing intensity were analysed against monthly precipitation and Gravity Recovery and Climate Experiment (GRACE) total water storage (TWS). The results show that regardless grazing regime, over 55% temporal variation of monthly NDVI anomaly can be explained by structured cumulative antecedent precipitation. It appears that the antecedent precipitation forms better predictor variables than GRACE TWS for this study area. The results also show that both grazing and drought reduce vegetation cover, and its response to precipitation. Drought exacerbates the grazing impact on NDVI-precipitation response. These results imply that grazing in arid and semi-arid rangelands can reduce the capacity of ecosystems to assimilate atmospheric CO2 during wet years and episodic wet events. It is important to incorporate temporal structures of infra- and inter-annual antecedent precipitation in investigating vegetation dynamic responses to precipitation. By doing so, it is possible to predict monthly vegetation dynamics to support grazing management.
类型	Article
语种	英语
国家	Australia ; Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000452936700007
WOS关键词	NET PRIMARY PRODUCTION ; SEMIARID SAVANNA ; AFRICAN SAHEL ; DYNAMICS ; PRECIPITATION ; RAINFALL ; TRENDS ; ECOSYSTEMS ; KOONAMORE
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216713
作者单位	1.Flinders Univ S Australia, Coll Sci & Engn, Natl Ctr Groundwater Res & Training, Adelaide, SA, Australia; 2.Southwest Univ, Coll Resources & Environm, Chongqing, Peoples R China; 3.Univ Adelaide, Sch Biol Sci, Adelaide, SA, Australia
推荐引用方式 GB/T 7714	Long, Xunjian,Guan, Huade,Sinclair, Russell,et al. Response of vegetation cover to climate variability in protected and grazed arid rangelands of South Australia[J],2019,161:64-71.
APA	Long, Xunjian.,Guan, Huade.,Sinclair, Russell.,Batelaan, Okke.,Facelli, Jose M..,...&Bestland, Erick.(2019).Response of vegetation cover to climate variability in protected and grazed arid rangelands of South Australia.JOURNAL OF ARID ENVIRONMENTS,161,64-71.
MLA	Long, Xunjian,et al."Response of vegetation cover to climate variability in protected and grazed arid rangelands of South Australia".JOURNAL OF ARID ENVIRONMENTS 161(2019):64-71.