Arid
DOI10.1071/RJ17124
High soil acidity under native shrub encroachment in the Cobar Pediplain, south-eastern Australia
Tighe, M.1; Reid, N.1; Wilson, B. R.1; McHenry, M. T.2
通讯作者Tighe, M.
来源期刊RANGELAND JOURNAL
ISSN1036-9872
EISSN1834-7541
出版年2018
卷号40期号:5页码:451-462
英文摘要

This study investigated the chemical characteristics of shallow (0-30 cm) soil profiles under shrubs in areas of dense encroachment and compared them with shallow soil profiles under nearby large trees. Consistent patterns of high soil acidity were found under shrubs, as well as lower litter alkalinity, lower relative concentrations of calcium (Ca2+), lower effective cation exchange capacity, and higher aluminium (Al3+) and sodium (Na+) in the soil profile compared with under trees. Soil pH (CaCl2) was strongly correlated with the Ca content of surface litter. These findings suggest that shrubs (which at most sites included the shrub form of tree species) cycle alkalinity differently from large and mature trees, resulting in high acidity in the shallow soil profile acidity, and possible loss of alkalinity via surface movement of material from areas of dense encroachment.


英文关键词landscape ecology leaf litter root-soil interactions semi-arid shrublands
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000447069500001
WOS关键词PINE CALLITRIS-GLAUCOPHYLLA ; NORTH-WESTERN SLOPES ; WOODY ENCROACHMENT ; EROSIONAL RESPONSES ; VEGETATION RESPONSE ; ECOSYSTEM STRUCTURE ; SEMIARID AUSTRALIA ; ASH ALKALINITY ; INTER-PATCHES ; WOODLAND
WOS类目Ecology
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/2XILL650/212567
作者单位1.Univ New England, Sch Environm & Rural Sci, Armidale, NSW 2351, Australia;
2.Univ Tasmania, Sch Land & Food, Hobart, Tas 7005, Australia
推荐引用方式
GB/T 7714
Tighe, M.,Reid, N.,Wilson, B. R.,et al. High soil acidity under native shrub encroachment in the Cobar Pediplain, south-eastern Australia[J],2018,40(5):451-462.
APA Tighe, M.,Reid, N.,Wilson, B. R.,&McHenry, M. T..(2018).High soil acidity under native shrub encroachment in the Cobar Pediplain, south-eastern Australia.RANGELAND JOURNAL,40(5),451-462.
MLA Tighe, M.,et al."High soil acidity under native shrub encroachment in the Cobar Pediplain, south-eastern Australia".RANGELAND JOURNAL 40.5(2018):451-462.
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