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| 作物成長モデル（DSSAT/APSIM）× | 葉面積指数× | |
|---|---|---|
| 分野 | 農学 | 農学 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 1993-2003 | 1947 |
| 提唱者≠ | James W. Jones, Gerbrand T. Hoogenboom (DSSAT); Brian A. Keating, Peter S. Carberry (APSIM) | Donald J. Watson |
| 種類≠ | Mechanistic crop simulation pipeline | Plant morphometric measurement |
| 原典≠ | Jones, J. W., Hoogenboom, G., Porter, C. H., et al. (2003). The DSSAT cropping system model. European Journal of Agronomy, 18(3-4), 235-265. DOI ↗ | Watson, D. J. (1947). Comparative physiological studies on the growth of field crops: I. Variation in net assimilation rate and leaf area between species and varieties, and within and between years. Annals of Botany, 11(43), 375-407. DOI ↗ |
| 別名 | DSSAT, APSIM, Crop Simulation Model | LAI, Leaf area, Canopy structure |
| 関連 | 3 | 3 |
| 概要≠ | Crop growth models are mechanistic simulation systems designed to predict crop development, biomass accumulation, and yield under varying environmental and management conditions. DSSAT (Decision Support System for Agrotechnology Transfer) and APSIM (Agricultural Production Systems Simulator) are the most widely used platforms, developed in the 1990s-2000s to support agronomic decision-making and climate adaptation research. | Leaf Area Index (LAI) is a dimensionless quantity that measures the total one-sided area of leaves per unit ground area covered by a canopy. It quantifies canopy density and structure: LAI = 0 for bare soil, LAI = 1 for a thin crop, LAI = 3-6 for dense cereal or grass canopies, and LAI > 8 for dense forest. LAI is a key variable in crop growth models, evapotranspiration estimation, and remote sensing because it directly controls light interception, photosynthesis, and water loss from vegetation. |
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