Abstract:

In this study, the soil surface heat flux of Punica granatum-Triticum aestivum intercropping system was calculated based on the measured soil temperature and water content. The results indicated that soil heat flux estimated from the soil temperature and water content well agreed to that measured with the heat flux plate. The soil heat storage is an important component of soil surface heat flux. If the measured heat fluxes at some layer below the soil surface is taken as the soil surface heat flux and the soil heat storage is ignored, large errors was introduced. The calculated soil surface heat flux at different points in the Punica granatum-Triticum aestivum intercropping system showed that there was significant spatial variation. Similar heat flux results were found at the two points between the megranate rows, and the values significantly less than that at the bare-soil.

Key words: soil heat flux, heat storage, intercropping system, soil temperature