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TABLE OF CONTENTS
Important Disclaimer...................... i
SUMMARY.......... 1
1. BACKGROUND AND 3
1.1 4
1.2 Work strategies 1.3 Dry saline land: a brief literature review... 5
1.3.1 Dry saline land in root zones caused by slowly permeable subsoil layers ............................ 6
1.3.2 Dry saline land with subsoil expression 7
1.3.3 Dry saline land with surface expression (magnesia patches)........ 7
1.3.4 Generalised best management practices for dry saline land......... 8
2. METHODS... 9
2.1 Selection of representative study areas with dry saline land 9
2.2 Site description of Cootes case study area.9
2.3 Site description of Munduney case study area 15
2.4 Electromagnetic induction principles..... 17
2.4.1 EM-38 electromagnetic induction technique 17
2.4.2 EM-31 electromagnetic induction technique..18
2.5 Volume magnetic susceptibility technique . 18
2.6 Ground-based surveys using EM-38, EM-31 and VMS geophysical techniques........................ 20
3. RESULTS AND DISCUSSION................ 21
3.1 Soil and landscape data.... 21
3.1.1 Subsoil expressed dryland saline land: Cootes case study area . 21
3.1.2 Surface expressed dryland saline land: Munduney case study area .................................. 23
3.2 Geophysical data: EM-38, EM-31 and VMS 24
3.2.1 Subsoil expressed dry saline land: Cootes case study area 25
3.2.2 Surface expressed dryland saline land: Munduney case study area 27
3.3 Integration of landscape-soil and geophysical data27
3.3.1 Whole-of-landscape 3-D process model for Cootes study area 30
3.3.1.1 Construction of soil-landscape process model 30
3.3.1.2 Application of the soil-landscape process model.31
4. CONCLUSIONS AND FURTHER WORK 35
5. ACKNOWLEDGMENTS 37
6. 38
APPENDIX 1: Mineralogical data 40
APPENDIX 2: EM 38, EM-31 and Volume magnetic susceptibility data.. 41
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