AN AGRO-ECOLOGICAL SIMULATION MODEL SYSTEM

In this paper five different models, as five modules of a complex agro-ecosystem are investigated. The water and nutrient flow in soil is simulated by the nutrient-in-soil model while the biomass change according to the seasonal weather aspects, the nutrient content of soil and the biotic interactions amongst the other terms of the food web are simulated by the food web population dynamical model that is constructed for a piece of homogeneous field. The food web model is based on the nutrient- in-soil model and on the activity function evaluator model that expresses the effect of temperature. The numbers of individuals in all phenological phases of the different populations are given by the phenology model. The food web model is extended to an inhomogeneous piece of field by the spatial extension model. Finally, as an additional module, an application of the above models for multivariate state-planes, is given. The modules built into the system are closely connected to each other as they utilize each other's outputs, nevertheless, they work separately, too. Some case studies are analysed and a summarized outlook is given.

[1]  Joel E. Cohen,et al.  Food web patterns and their consequences , 1991, Nature.

[2]  J. Goudriaan,et al.  Simulation of crop growth for potential and water - limited production situations : as applied to spring wheat , 1992 .

[3]  P. Mols.  Forecasting an indispensable part of IPM in apple orchards. , 1992 .

[4]  T. Vásárhelyi,et al.  New approach for habitat characterization based on species lists of aquatic and semiaquatic bugs , 1999 .

[5]  G. Bellocchi,et al.  A review of methodologies to evaluate agroecosystems simulation models , 1999 .

[6]  W. Otten.  Dynamics of water and nutrients for potted plants induced by flooded bench fertigation : experiments and simulation , 1994 .

[7]  B.A.M. Bouman.  SBFLEVO and WWFLEVO : growth models to simulate crop growth, optical reflectance and radar backscatter of sugar beet and winter wheat, calibrated for Flevoland , 1992 .

[8]  R. May.  Food webs. , 1983, Science.

[9]  明 大久保,et al.  Diffusion and ecological problems : mathematical models , 1980 .

[10]  W. G. Knisel,et al.  CREAMS: a field scale model for Chemicals, Runoff, and Erosion from Agricultural Management Systems [USA] , 1980 .

[11]  L. Lane,et al.  Estimating sediment yield from rangeland with CREAMS a field-scale model for chemicals, runoff, and erosion from agricultural management systems , 1982 .

[12]  J. Groot,et al.  Modelling organic matter dynamics in different soils. , 1990 .

[13]  Søren Hansen,et al.  Simulation of crop production, water and nitrogen balances in two German agro-ecosystems using the DAISY model , 1995 .

[14]  N. Rashevsky,et al.  Mathematical biology , 1961, Connecticut medicine.

[15]  F. Jordán.  Seasonal changes in the positional importance of components in the trophic flow network of the Chesapeake Bay , 2001 .

[16]  Robert E. Ulanowicz,et al.  Identifying the Structure of Cycling in Ecosystems , 1983 .

[17]  Raymond L. Lindeman.  The trophic-dynamic aspect of ecology , 1942 .

[18]  A. Watt,et al.  Pattern and process in the plant community , 1947 .

[19]  Levente Hufnagel,et al.  AN AGRO-ECOLOGICAL SIMULATION MODEL SYSTEM , 2003 .

[20]  John A. Harrison,et al.  Use of models as Decision Support Tools in Dairy Nutrient Management , 2002 .

[21]  O. Chertov,et al.  SOMM: A model of soil organic matter dynamics , 1997 .

[22]  M. Gaál,et al.  Population Dynamical Stability in Service of Plant Protection Prognosis , 2001 .

[23]  I. Molnar,et al.  Reliable flows and preferred patterns in food webs , 1999 .

[24]  J. Wilson.  Who makes the assembly rules , 1994 .

[25]  Reinder A. Feddes,et al.  SWACROP: A water management and crop production simulation model. , 1992 .

[26]  M. Gaál,et al.  Temporal-spatial patterns of Noctuinae communities (Lep. Noctuidae) in Hungarian apple orchards (Apple Ecosystem research) , 2000 .

[27]  Study Of The Impact Of Climate Change On Wheat And Sunflower Yields Using An Historical Weather Data-Set And A Crop Simulation Model , 2001 .

[28]  S. Levin.  Population Dynamic Models in Heterogeneous Environments , 1976 .

[29]  István Scheuring,et al.  SOC Defeats Chaos: a New Population-Dynamical Model , 1993, Fractals in the Natural and Applied Sciences.

[30]  W. R. Stern.  Simulation of water use, nitrogen nutrition and growth of a spring wheat crop , 1989 .

[31]  Budapesti Corvinus Egyetem.  Applied Ecology and Environmental Research , 2003 .

[32]  Ferenc Jordán,et al.  A Reliability Theoretical Quest for Keystones , 1999 .

[33]  R E Ulanowicz,et al.  Ecosystem flow networks: loaded dice? , 1991, Mathematical biosciences.

[34]  C. Stöckle,et al.  CropSyst, a cropping systems simulation model , 2003 .

[35]  Benoit Gabrielle,et al.  Analysis and Field Evaluation of the Ceres Models Water Balance Component , 1995 .

[36]  H. Keulen,et al.  Simulation of Water Use, Nitrogen Nutrition and Growth of a Spring Wheat Crop , 1987, The Journal of Agricultural Science.