Salīdzināt metodes

	Penmana-Montīta vienādojums	Kušņu aizseguma modelēšana	Kultūraugu augšanas modeļi (DSSAT/APSIM)	Augsnes mitruma līkne
Nozare	Agronomija	Agronomija	Agronomija	Agronomija
Saime	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline
Izcelsmes gads	1948-1965	1971–1979 (foundational models; continuous development since)	1993-2003	1956-1980
Autors	Howard Latimer Penman, John Monteith	Multiple contributors (Rutter et al. 1971; Gash 1979 for principal analytical frameworks)	James W. Jones, Gerbrand T. Hoogenboom (DSSAT); Brian A. Keating, Peter S. Carberry (APSIM)	Willard Robert Gardner, Rollin H. Brooks, Arthur T. Corey
Tips	Mechanistic evapotranspiration model	Process-based hydrological model	Mechanistic crop simulation pipeline	Empirical soil water retention model
Pirmavots	Penman, H. L. (1948). Natural evaporation from open water, bare soil and grass. Proceedings of the Royal Society A, 193(1032), 120-145.	Rutter, A. J., Kershaw, K. A., Robins, P. C., & Morton, A. J. (1971). A predictive model of rainfall interception in forests. Agricultural Meteorology, 9, 367–384.	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.	Gardner, W. R. (1956). Representation of soil aggregate-size distribution by a logarithmic-normal distribution. Soil Science Society of America Journal, 20(2), 151-153.
Citi nosaukumi	PM Equation, FAO-56 PM, Evapotranspiration Model	interception loss modeling, canopy rainfall partitioning, forest interception modeling, throughfall-stemflow modeling	DSSAT, APSIM, Crop Simulation Model	Water Retention Curve, pF Curve, Characteristic Curve, SWRC
Saistītās	3	0	3	3
Kopsavilkums	The Penman-Monteith equation is a mechanistic model for estimating evapotranspiration (ET), the combined loss of water from soil and plant canopies to the atmosphere. First proposed by Penman (1948) for bare soil and water surfaces, then extended by Monteith (1965) to incorporate plant resistance to water vapor diffusion, it has become the international standard for water balance studies, crop water requirement calculation, and hydrological modeling.	Canopy interception modeling quantifies the fraction of rainfall captured by plant canopies and subsequently evaporated back to the atmosphere before reaching the soil. Applied across agronomy, forestry, and hydrology, it partitions gross precipitation into throughfall, stemflow, and interception loss. By linking vegetation structure — particularly leaf area index and canopy storage capacity — to water balance components, the method informs irrigation scheduling, watershed management, and crop water-use estimation.	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.	The soil moisture curve (or soil water retention curve, SWRC) describes the relationship between soil water content and soil matric potential (water tension). It characterizes how tightly water is bound in pores of different sizes: large pores drain at low tensions (wet soils), while smaller pores retain water at high tensions (dry soils). Quantifying this relationship is essential for water balance modeling, unsaturated flow prediction, and assessing plant-available water.