Vegetation indicators of salinity in northern Queensland

Austral Ecology - Tập 28 Số 5 - Trang 539-552 - 2003
Elisabeth N. Bui1, Brent Henderson1
11 CSIRO Land and Water, Canberra, Australia Capital Territory, Australia, and 2 CSIRO Mathematical and Information Sciences, GPO Box 664, Canberra, Australian Capital Territory 2601, Australia (Email: [email protected])

Tóm tắt

Abstract The possibility that plants could serve as indicators of underlying soil salinity in northern Queensland, Australia, was investigated using 2197 site observations recorded during a land resources inventory of the Dalrymple Shire. The area surveyed intersects three biogeographical regions: the desert uplands, the Einasleigh uplands and the northern brigalow belt. The three dominant plant species in the lower, middle, and upper vegetation strata were recorded, along with laboratory measurements of electrical conductivity down each soil profile. Correspondence analysis, generalized additive models and clustering were used to investigate the relationship between plant occurrence, climatic and edaphic factors. The results of these statistical analyses strongly suggest a relationship between salinity and brigalow plant communities. A generalized additive model to predict soil salinity from environmental variables including vegetation data is presented.

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Austral Ecology

Tập 28 Số 5

539-552

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