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David LeBauer edited unit conversions.md
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**Table \ref{tab:conversions}: Useful conversions for entering site, management, yield, and trait data \label{tab:conversions}**
| From
(\(X\)) ($X$) | to
(\(Y\)) ($Y$) | Conversion | Notes |
|:-----------|:---------|:-----------|:------|
|
\(X_2=\)root $X_2=$root production |
\(X_1=\)root $X_1=$root biomass & root turnover rate |
\(Y $Y =
X_2/X_1\) X_2/X_1$ | Gill [2000] |
|
DD\(^{\circ}\) DD$^{\circ}$ MM'SS | XX.ZZZZ |
\(\textrm{XX.ZZZZ} $\textrm{XX.ZZZZ} = \textrm{XX} +
\textrm{MM}/60+\textrm{SS}/60\) \textrm{MM}/60+\textrm{SS}/60$ | to convert latitude or longitude from degrees, minutes, seconds to decimal degrees |
| lb | kg |
\(Y=X\times 2.2\) $Y=X\times 2.2$ | |
| mm/s |
\(\mu\) $\mu$ mol
CO\(_2\) m\(^{2}\) s\(^{-1}\) CO$_2$ m$^{2}$ s$^{-1}$ |
\(Y=X\times 0.04\) $Y=X\times 0.04$ | |
|
m\(^2\) m$^2$ | ha |
\(Y $Y =
X/10^6\) X/10^6$ | |
|
g/m\(^2\) g/m$^2$ | kg/ha |
\(Y=X\times 10\) $Y=X\times 10$ | |
| US ton/acre | Mg/ha |
\(Y $Y = X\times
2.24\) 2.24$ | |
|
m\(^3\)/ha m$^3$/ha | cm |
\(Y=X/100\) $Y=X/100$ | units used for irrigation and rainfall |
| % roots | root:shoot (q) |
\(Y=\frac{X}{1-X}\) $Y=\frac{X}{1-X}$ |
\(\% $\% \text{roots} = \frac{\text{root biomass}}{\text{total
biomass}}\) biomass}}$ |
|
\(\mu\) $\mu$ mol
cm\(^{-2}\) s\(^{-1}\) cm$^{-2}$ s$^{-1}$ | mmol
m\(^{-2}\) s\(^{-1}\) m$^{-2}$ s$^{-1}$ |
\(Y $Y =
X/10\) X/10$ | |
| mol
m\(^{-2}\) s\(^{-1}\) m$^{-2}$ s$^{-1}$ | mmol
m\(^{-2}\) s\(^{-1}\) m$^{-2}$ s$^{-1}$ |
\(Y $Y =
X/10^6\) X/10^6$ | |
| mol
m\(^{-2}\) s\(^{-1}\) m$^{-2}$ s$^{-1}$ |
\(\mu\) $\mu$ mol
cm\(^{-2}\) s\(^{-1}\) cm$^{-2}$ s$^{-1}$ |
\(Y $Y = X/
10^5\) 10^5$ | |
| mm
s\(^{-2}\) s$^{-2}$ | mmol
m\(^{-3}\) s\(^{-1}\) m$^{-3}$ s$^{-1}$ |
\(Y=X/41\) $Y=X/41$ | Korner et al. [1988] |
| mg
CO\(_2\) g\(^{-1}\) h\(^{-1}\) CO$_2$ g$^{-1}$ h$^{-1}$ |
\(\mu\) $\mu$ mol
kg\(^{-1}\) s\(^{-1}\) kg$^{-1}$ s$^{-1}$ |
\(Y $Y = X\times
6.31\) 6.31$ | used for root_respiration_rate |
|
\(\mu\) $\mu$ mol | mol |
\(Y= $Y= X\times
10^6\) 10^6$ | |
| julian day (1--365) | date | | see ref: http://disc.gsfc.nasa.gov/julian_calendar.shtml (NASA Julian Calendar)
| spacing (m) | density (plants
m\(^{2}\)) m$^{2}$) |
\(Y=\frac{1}{\textrm{row $Y=\frac{1}{\textrm{row spacing}\times\textrm{plant
spacing}}\) spacing}}$ | |
| kg
ha\(^{-1}\) y\(^{-1}\) ha$^{-1}$ y$^{-1}$ | Mg
ha\(^{-1}\) y\(^{-1}\) ha$^{-1}$ y$^{-1}$ |
\(Y= X/1000\) $Y= X/1000$ | |
| g
m\(^{-2}\) y\(^{-1}\) m$^{-2}$ y$^{-1}$ | Mg
ha\(^{-1}\) y\(^{-1}\) ha$^{-1}$ y$^{-1}$ |
\(Y= X/100\) $Y= X/100$ | |
| kg | mg |
\(Y=X\times 10^6\) $Y=X\times 10^6$ | |
|
cm\(^2\) cm$^2$ |
m\(^2\) m$^2$ |
\(Y=X\times 10^4\) $Y=X\times 10^4$ | |