大气连续体 meaning in English

soil-plant-atmosphere continuum spac
spac

Variation of hydraulic resistances in red soil - crop - air continuums in different farming systems in dry season
干旱季节不同耕作制度下红壤?魑?大气连续体水流阻力变化规律
In spac , it is the plant that should be optimum indicator for irrigation control , because the soil factor and air factor , which control the balance of water in crops , can but be integrated by plant
而在土壤?植物?大气连续体(简称spac )中，植物才应该是是否需要灌溉的最优指示物，因为只有它们才能把控制植物水分平衡的土壤因子和大气因子综合起来。