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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\(^2\) |
$Y=X\times 10^4$ \(Y=X\times 10^4\) | |