Random Forests as a Tool for Analyzing Partial Drought Stress Based on CO₂ Concentrations in the Rootzone of Longan Trees
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- FUKUDA Shinji
- Institute of Agriculture, Tokyo University of Agriculture and Technology
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- SPREER Wolfram
- Institute of Agricultural Engineering, University of Hohenheim Faculty of Agriculture, Chiang Mai University
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- WIRIYA-ALONGKORN Winai
- Department of Soil Resources and Environment, Mae Jo University
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- SPOHRER Klaus
- Institute of Agricultural Engineering, University of Hohenheim
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- YASUNAGA Eriko
- Institute for Sustainable Agro-ecosystem Services, Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- TIYAYON Chantalak
- Faculty of Agriculture, Chiang Mai University
書誌事項
- タイトル別名
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- Random Forests as a Tool for Analyzing Partial Drought Stress Based on CO<sub>2</sub> Concentrations in the Rootzone of Longan Trees
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抄録
This study aims at establishing a relationship between water supply and CO2 concentration in the rootzone, and to identify disturbing factors using data-driven modelling. In our previous study, 10 longan trees were planted in split-root technique and kept under controlled conditions. During six months, 5 trees were partially irrigated on one side of the root system, while the other side was kept non-irrigated. The sides were switched in a two-week interval. Five control trees received full irrigation on both sides. Monitoring results on CO2 concentration in the rootzone, soil moisture and stomatal conductance indicated a weak correlation between the CO2 concentration in the rootzone and the soil moisture, but without a statistically significant correlation, partially because air temperature was a main disturbing factor. In this study, Random Forests was applied to establish a CO2-water stress relationship based on air temperature, relative humidity, vapour pressure deficit and soil moisture. It was shown that the most important factor on CO2 concentration in the rootzone was soil moisture, followed by air temperature. Together with the information retrieved, the results suggest a potential of CO2 monitoring in the rootzone for assessing plant water status continuously and with a minimum level of invasion.
収録刊行物
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- Environment Control in Biology
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Environment Control in Biology 56 (2), 25-31, 2018
日本生物環境工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680237102592
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- NII論文ID
- 130006712463
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- NII書誌ID
- AA12029220
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- ISSN
- 18830986
- 1880554X
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- NDL書誌ID
- 028942106
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可