Dairy's role in sustaining New Zealand - Fonterra
Dairy's role in sustaining New Zealand - Fonterra
Dairy's role in sustaining New Zealand - Fonterra
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2. Modell<strong>in</strong>g dairy’s economic contribution<br />
over the past decade<br />
2.1 Objective of modell<strong>in</strong>g<br />
The section above has shown that the dairy sector has witnessed significant growth over the<br />
past decade. A key question is: how has this growth benefited the rest of the economy? In<br />
particular, we are <strong>in</strong>terested <strong>in</strong> two aspects of this growth:<br />
• The short term impacts of milk solids payout <strong>in</strong>creases<br />
• The longer term impacts of volume growth <strong>in</strong> the sector over the last 10 years.<br />
We exam<strong>in</strong>e these two aspects us<strong>in</strong>g a relatively newly developed economic model of the<br />
<strong>New</strong> <strong>Zealand</strong> economy.<br />
2.2 Modell<strong>in</strong>g technique<br />
The dairy sector <strong>in</strong>teracts with the rest of the economy by generat<strong>in</strong>g exports and<br />
employment, us<strong>in</strong>g <strong>in</strong>termediate <strong>in</strong>puts such as fertilizer, and compet<strong>in</strong>g for use of land,<br />
labour and <strong>in</strong>vestment. In order to get a sense of how the <strong>New</strong> <strong>Zealand</strong> economy as a whole<br />
might be impacted by production and price changes <strong>in</strong> the dairy sector, we need to use<br />
an economic model that takes these <strong>in</strong>teractions <strong>in</strong>to account. We use NZIER’s dynamic<br />
Computable General Equilibrium (CGE) model of the <strong>New</strong> <strong>Zealand</strong> economy to evaluate the<br />
impacts of the price and volume growth <strong>in</strong> the dairy sector.<br />
2.3 Advantages of CGE modell<strong>in</strong>g<br />
Our dynamic CGE model is a more robust framework than alternatives approaches for<br />
estimat<strong>in</strong>g the contribution of the dairy sector to the <strong>New</strong> <strong>Zealand</strong> economy. The most<br />
commonly used alternative is <strong>in</strong>put-output (IO) or ‘multiplier’analysis. IO or multiplier analysis<br />
has two significant limitations:<br />
• It does not adequately consider the reallocation of resources follow<strong>in</strong>g a ‘shock’to the<br />
economy, such as a surge <strong>in</strong> demand for dairy exports. In particular, multiplier analysis<br />
assumes that resources (land, labour, capital, energy, <strong>in</strong>termediate <strong>in</strong>puts) are available<br />
Dairy’s <strong>role</strong> <strong>in</strong> generat<strong>in</strong>g growth<br />
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