This thesis consists of seven main sections. It starts with the description of the problem which is the tropospheric ozone pollution and its harmful effects on agriculture. Then are described the aims and the objectives ofthe study and how it is going to contribute in the current state ofknowledge. The chapter which follows it is dedicated to the scientific explanation of the problem mainly focusing on ozone formation and its hazards followed by an analytical and critical review of the past literature on the subject concentration on its defects and gaps. The third section describes the sources and the form of trial plot, farm and ozone data along with summary statistics. In this section are also explained the interpolation techniques which were used to develop the ozone maps for Great Britain for the period for which this study is carried out. Section four describes and explains the different econometric and statistical techniques such as panel data techniques, fixed and random effects, error components etc which are used in the following sections to derive the results The next two sections are presenting and interpreting the results from the winter wheat trial plot yields and farms. First are reported all the trial plot results. How ozone is affecting the yields and how the different varieties respond to it. Also explains how the effect changes through time. Then are reported the results from t~.e farm level study. Fanus which produce different types of products are used to measure the effect of ozone on annual production functions, followed by the effect for the entire period and then on the effect oI,1 productivity and efficiency ofthe farms. The last section compares the results from trial plots and farms and it makes suggestions on how these findings could help in future policy making
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:490597 |
| Date | January 2008 |
| Creators | Kaliakatsou, Evridiki |
| Publisher | Imperial College London |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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