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\textbf{
Module 4 Project for Group S1G3\\ Due 24$^\text{th}$ November 2008 }
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\section{Research Paper}
\begin{description}
\item[Authors] David Daudin, Jorge Sierra
\item[Year] 2008
\item[Title] Spatial and temporal variation of below-ground N transfer from
a leguminous tree to an associated grass in an agroforestry system
\item[Journal] Agriculture, Ecosystems and Environment 126 (2008) 275--280
\item[Web-site] \verb+www.elsevier.com/locate/agee+
\end{description}

\section{Data}
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\begin{tabular}{|c|c|}\hline
\textbf{Distance (m)}\rule{0pt}{14pt} &
\textbf{Concentration of C (mg kg$^{-1}$)}\\\hline
0 & 38.9\\
1 & 34.9\\
2 & 33.7\\
3 & 31.9\\
4 & 31.8\\
5 & 31.1\\
\hline
\end{tabular}
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\section{Interpolation Function}
Use the most appropriate of the interpolation functions that you fitted to this data in your
Module 3 project.
\section{Question}
A trench 0.5m deep,0.75m wide and 7m long is dug in the same line
along which the above measurements were taken. Estimate the total mass
of Carbon contained in the excavated soil.

