Numerical simulation of winter wheat growth in a regular windbredk system

Abstract

Abstract: An ecological model simulating the process of winter wheat growth is established, and used to do numerical simulation on its growth process with and without the protection of windbreaks. The outputs of the model include the eco-physiological factors which are closely associated with crop growth, such as leaf area index, biomass of various plant organs(root, leaves, stems, and storage organs),dynamics of soil water content, water utilization efficiency, photosynthesis efficiency, respiration efficiency, and so on. The results show that due to the improved microclimate in the windbreaks, the agro forestry mixed system in windbreak areas has a stronger drought resistance than the monoculture system. In the droughty year of 1994, the simulated yield in windbreak areas is about 11.6% higher than that under monoculture conditions, and the simulated above ground yield fits quite well with the field growth monitoring data.

Key words: Procuction ecolgy, Windbreaks, Numerical simulation, Moran’s I, geographically weighted Poisson model (GWPR), spatial scale, spatial distribution, recruitment trees

Wang Hanjie. Numerical simulation of winter wheat growth in a regular windbredk system[J]. Chinese Journal of Applied Ecology, 1997, 8(3): 250-256.

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