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Spatial and temporal analysis of vegetation change in agricultural landscapes: A case study of two brigalow (Acacia harpophylla) landscapes in Queensland, ... Agriculture, Ecosystems and Environment

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Spatial and temporal analysis of vegetation change in agricultural landscapes: A case study of two brigalow (Acacia harpophylla) landscapes in Queensland, ... Agriculture, Ecosystems and Environment
L. Seabrook , C. McAlpine , and R. Fensham
Manufacturer: Elsevier
ProductGroup: Book
Binding: Digital

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ASIN: B000PDT5NU

Book Description

This digital document is a journal article from Agriculture, Ecosystems and Environment, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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The majority of landscapes around the world have been modified or transformed by human activities to meet the needs of human societies. The loss of native vegetation for agricultural development affects the sustainability of growing proportion of the world's ecosystems. Factors such as land tenure, roads and agricultural intensification, together with biophysical properties, have been cited as drivers of deforestation. This paper combined analysis of the historical drivers of change with analysis of the trends of deforestation since 1945 in two brigalow landscapes (100,000ha) in sub-tropical Australia. A selection of these drivers were then applied at a property-level (1000ha) to test their influence on native vegetation retention. Regression trees were used to identify significant human drivers and biophysical properties, and then a generalised linear modelling approach was used to quantify the effect of these factors on the proportion of remnant native vegetation. Results showed that until the mid-20th century, government policies to intensify settlement did not result in increased agricultural production, but since this time, landscape change has been rapid, and has particularly affected ecosystems on fertile clay soils. Although socio-economic factors were critical in driving deforestation, after 60 years of agricultural intensification by far the most significant explanatory variable determining the proportion of native vegetation retained at a property scale was the suitability of the soil for agriculture. Property size was an important secondary influence. The results were not, by and large, consistent with other studies of landscape change and suggest that generalised principles explaining deforestation may be elusive. Solutions to the problem of over-clearance of native vegetation, therefore, need to be tailored to the specific regional situations encountered.

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Advanced Use of Case Modelling
Frank Armour , and Granville Miller
Manufacturer: Addison Wesley
ProductGroup: Book
Binding: Paperback

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ASIN: 0201702398

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Use Case Modelling
Kurt; Spence, Ian Bittner
Manufacturer: Addison-Wesley Professional
ProductGroup: Book
Binding: Paperback
ASIN: B000OOPPMA

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