Abstract
We developed a soil-vegetation-atmosphere transfer (SVAT) model applicable to simulating CO2 and H2O fluxes from the canopies of rubber plantations, which are characterized by distinct canopy clumping produced by regular spacing of plantation trees. Rubber (Hevea brasiliensis Müll. Arg.) plantations, which are rapidly expanding into both climatically optimal and sub-optimal environments throughout mainland Southeast Asia, potentially change the partitioning of water, energy, and carbon at multiple scales, compared with traditional land covers that are being replaced. Describing the biosphere-atmosphere exchange in rubber plantations via SVAT modeling is, therefore, important to understanding the impacts on environmental processes. The regular spacing of plantation trees creates a peculiar canopy structure that is not well represented in most SVAT models, which generally assume a non-uniform spacing of vegetation. Herein we develop a SVAT model applicable to a rubber plantation and an evaluation method for its canopy structure, and examine how the peculiar canopy structure of rubber plantations affects canopy CO2 and H2O exchanges. Model results are compared with measurements collected at a field site in central Cambodia. Our findings suggest that it is crucial to account for intensive canopy clumping in order to reproduce observed rubber plantation fluxes. These results suggest a potentially optimal spacing of rubber trees to produce high primary productivity and water use efficiency.
| Original language | English |
|---|---|
| Pages (from-to) | 124-135 |
| Number of pages | 12 |
| Journal | Ecological Modelling |
| Volume | 265 |
| DOIs | |
| Publication status | Published - Sep 10 2013 |
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All Science Journal Classification (ASJC) codes
- Ecological Modelling
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Simulation of canopy CO2/H2O fluxes for a rubber (Hevea brasiliensis) plantation in central Cambodia : The effect of the regular spacing of planted trees. / Kumagai, Tomo'omi; Mudd, Ryan G.; Miyazawa, Yoshiyuki; Liu, Wen; Giambelluca, Thomas W.; Kobayashi, Nakako; Lim, Tiva Khan; Jomura, Mayuko; Matsumoto, Kazuho; Huang, Maoyi; Chen, Qi; Ziegler, Alan; Yin, Song.
In: Ecological Modelling, Vol. 265, 10.09.2013, p. 124-135.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Simulation of canopy CO2/H2O fluxes for a rubber (Hevea brasiliensis) plantation in central Cambodia
T2 - The effect of the regular spacing of planted trees
AU - Kumagai, Tomo'omi
AU - Mudd, Ryan G.
AU - Miyazawa, Yoshiyuki
AU - Liu, Wen
AU - Giambelluca, Thomas W.
AU - Kobayashi, Nakako
AU - Lim, Tiva Khan
AU - Jomura, Mayuko
AU - Matsumoto, Kazuho
AU - Huang, Maoyi
AU - Chen, Qi
AU - Ziegler, Alan
AU - Yin, Song
PY - 2013/9/10
Y1 - 2013/9/10
N2 - We developed a soil-vegetation-atmosphere transfer (SVAT) model applicable to simulating CO2 and H2O fluxes from the canopies of rubber plantations, which are characterized by distinct canopy clumping produced by regular spacing of plantation trees. Rubber (Hevea brasiliensis Müll. Arg.) plantations, which are rapidly expanding into both climatically optimal and sub-optimal environments throughout mainland Southeast Asia, potentially change the partitioning of water, energy, and carbon at multiple scales, compared with traditional land covers that are being replaced. Describing the biosphere-atmosphere exchange in rubber plantations via SVAT modeling is, therefore, important to understanding the impacts on environmental processes. The regular spacing of plantation trees creates a peculiar canopy structure that is not well represented in most SVAT models, which generally assume a non-uniform spacing of vegetation. Herein we develop a SVAT model applicable to a rubber plantation and an evaluation method for its canopy structure, and examine how the peculiar canopy structure of rubber plantations affects canopy CO2 and H2O exchanges. Model results are compared with measurements collected at a field site in central Cambodia. Our findings suggest that it is crucial to account for intensive canopy clumping in order to reproduce observed rubber plantation fluxes. These results suggest a potentially optimal spacing of rubber trees to produce high primary productivity and water use efficiency.
AB - We developed a soil-vegetation-atmosphere transfer (SVAT) model applicable to simulating CO2 and H2O fluxes from the canopies of rubber plantations, which are characterized by distinct canopy clumping produced by regular spacing of plantation trees. Rubber (Hevea brasiliensis Müll. Arg.) plantations, which are rapidly expanding into both climatically optimal and sub-optimal environments throughout mainland Southeast Asia, potentially change the partitioning of water, energy, and carbon at multiple scales, compared with traditional land covers that are being replaced. Describing the biosphere-atmosphere exchange in rubber plantations via SVAT modeling is, therefore, important to understanding the impacts on environmental processes. The regular spacing of plantation trees creates a peculiar canopy structure that is not well represented in most SVAT models, which generally assume a non-uniform spacing of vegetation. Herein we develop a SVAT model applicable to a rubber plantation and an evaluation method for its canopy structure, and examine how the peculiar canopy structure of rubber plantations affects canopy CO2 and H2O exchanges. Model results are compared with measurements collected at a field site in central Cambodia. Our findings suggest that it is crucial to account for intensive canopy clumping in order to reproduce observed rubber plantation fluxes. These results suggest a potentially optimal spacing of rubber trees to produce high primary productivity and water use efficiency.
UR - http://www.scopus.com/inward/record.url?scp=84880341111&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84880341111&partnerID=8YFLogxK
U2 - 10.1016/j.ecolmodel.2013.06.016
DO - 10.1016/j.ecolmodel.2013.06.016
M3 - Article
AN - SCOPUS:84880341111
VL - 265
SP - 124
EP - 135
JO - Ecological Modelling
JF - Ecological Modelling
SN - 0304-3800
ER -