Reports and Books
A survey of methods for analysing groundwater Recharge in arid and semi-arid region
United Nations Environment Programme

This publication is a compilation of methods that have been used for analysing groundwater recharge in arid and semi-arid regions around the world. Some of these are direct methods, such as the soil moisture budget by neutron or TDR probes, water balance methods such as the river channel water balance, or rainfall-recharge relationships, which are the most common techniques. Others include the Darcyan methods, such as the numerical flow model, which can use many types of information, and tracer methods, such as the tritium-helium 3 method. Each method is presented with notes on their application and utilisation.


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2002

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Reports and Books
State of Environment Report - American Samoa
American Samoa Environmental Protection Agency

The 2002 State of Environment Report is a brief ' environmental report card' on the resources of the Territory. The report is designed to provide American Samoan residents and policy makers with a foundation to build their understanding of environmental management issues.


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2002
Reports and Books
Transport and the global environment: accounting for GHG reductions in policy analysis
Halsnaes, K., Markandya, A., Sathaye, J.

This publication is an analytical structure for examining environmental aspect of transport choices. It defines key economic and environmental concepts used in good policy analysis||and gives information on technologies, environmental impacts, and cost effectiveness of various policy options.


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2002

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