| Type: | Package |
| Title: | Reconstructing Tree Growth and Carbon Accumulation with Stem Analysis Data |
| Version: | 0.1.0 |
| Author: | Huili Wu [aut, cre], Wenhua Xiang [aut] |
| Maintainer: | Huili Wu <wuhuili0701@163.com> |
| Description: | Use stem analysis data to reconstructing tree growth and carbon accumulation. Users can independently or in combination perform a number of standard tasks for any tree species. (i) Age class determination. (ii) The cumulative growth, mean annual increment, and current annual increment of diameter at breast height (DBH) with bark, tree height, and stem volume with bark are estimated. (iii) Tree biomass and carbon storage estimation from volume and allometric models are calculated. (iv) Height-diameter relationship is fitted with nonlinear models, if diameter at breast height (DBH) or tree height are available, which can be used to retrieve tree height and diameter at breast height (DBH). https://github.com/forestscientist/StemAnalysis. |
| License: | MIT + file LICENSE |
| NeedsCompilation: | no |
| Repository: | CRAN |
| Encoding: | UTF-8 |
| LazyData: | true |
| RoxygenNote: | 7.2.1 |
| Imports: | lmfor (≥ 1.0) |
| Depends: | R (≥ 2.10) |
| Suggests: | knitr, rmarkdown, testthat (≥ 3.0.0) |
| Config/testthat/edition: | 3 |
| URL: | https://github.com/forestscientist/StemAnalysis |
| VignetteBuilder: | knitr |
| Packaged: | 2022-10-13 01:28:17 UTC; Wu |
| Date/Publication: | 2022-10-14 08:42:36 UTC |
BEFdata
Description
Just test number(Description)
Usage
BEFdata
Format
An object of class data.frame with 1 rows and 4 columns.
Examples
head(BEFdata)
dataframe
Description
Just test dataframe(Description)
Usage
dataframe
Format
An object of class data.frame with 97 rows and 18 columns.
Examples
head(dataframe)
dataframe1
Description
Just test dataframe(Description)
Usage
dataframe1
Format
An object of class data.frame with 5 rows and 4 columns.
Examples
head(dataframe1)
dataframe2
Description
Just test dataframe(Description)
Usage
dataframe2
Format
An object of class data.frame with 1 rows and 4 columns.
Examples
head(dataframe2)
parameterdata
Description
Just test number(Description)
Usage
parameterdata
Format
An object of class data.frame with 5 rows and 4 columns.
Examples
head(parameterdata)
Reconstructing Tree Growth and Carbon Accumulation with Stem Analysis Data
Description
Reconstructing Tree Growth and Carbon Accumulation with Stem Analysis Data
Usage
stemanalysism(
xtree,
stemgrowth = FALSE,
treecarbon = FALSE,
HDmodel = FALSE,
stemdata,
parameterdata,
BEFdata
)
Arguments
xtree |
Xtree is the tree number (Treeno), which is used to choose the target tree to be analyzed |
stemgrowth |
If stemgrowth is 'TRUE', stem growth profile and growth trends in terms of diameter at breast height (DBH), tree height, and stem volume will be showed in a graph |
treecarbon |
If treecarbon is 'TRUE', total tree biomass and carbon storage will be estimated by allometric models (Xiang et al., 2021) and volume model (IPCC, 2003). In addition, although treecarbon is 'TRUE', the estimation of tree biomass and carbon storage by allometric models will skip if data 'parameterdata' is missing, and the same is true for the estimation by volume model if data 'BEFdata' is missing |
HDmodel |
If HDmodel is 'TRUE', height-diameter relationship will be fitted with nonlinear models (Mehtatalo, 2017) and showed the fitted results in a graph |
stemdata |
Stemdata is the stem analysis data that has been inputted |
parameterdata |
Parameterdata is the parameter data of allometric models that can be optionally inputted |
BEFdata |
BEFdata is the biomass estimation factor data of volume model that can be optionally inputted by users |
Value
A list with class "output" containing the following components: - 'StemGrowth': the estimated stem growth trends data, including the tree age chronosequence and the corresponding growth data of diameter at breast height (DBH), stem height, and stem volume - 'allomCarbon': the estimated tree biomass and carbon storage data by using allometric models, including tree biomass and carbon storage for each tissues (stem, branch, leaf, root, and total tree) - 'volumeCarbon': the estimated tree biomass and carbon storage data by using volume model, including tree biomass and carbon storage for each tissues (stem, branch, leaf, root, and total tree)
References
Fang, J., Chen, A., Peng, C., et al. (2001) Changes in forest biomass carbon storage in China between 1949 and 1998. Science 292, 2320-2322. doi:10.1126/science.1058629
Mehtatalo, L. (2017) Lmfor: Functions for forest biometrics. https://CRAN.R-project.org/package=lmfor
Xiang, W.H., Li, L.H., Ouyang, S., et al. (2021) Effects of stand age on tree biomass partitioning and allometric equations in Chinese fir (Cunninghamia lanceolata) plantations. European Journal of Forest Research 140, 317-332. doi:10.1007/s10342-020-01333-0
Examples
library(StemAnalysis)
# Load the data sets
data(stemdata)
data(parameterdata)
# To calculating tree growth and carbon accumulation with input data sets
stemanalysism(xtree = 8, stemdata = stemdata)
# If the graph of stem growth profile and growth trends is needed
stemanalysism(xtree = 8, stemgrowth = TRUE, treecarbon = TRUE,
stemdata = stemdata, parameterdata = parameterdata)
stemdata
Description
Just test number(Description)
Usage
stemdata
Format
An object of class data.frame with 97 rows and 18 columns.
Examples
head(stemdata)