basal diameter meaning in English

底面直径

3 the influence of water on vegetation growth : ( 1 ) soil water shortage refrains the height , basal diameter and stock of trees
3土壤水分对林分生长的影响： ( 1 )土壤水分亏缺严重制约着树高、胸径和材积的生长。
7 ) after analyzing the relationship among biomass above ground , height and basal diameter of reed , the regression equation model can be concluded as : w = 7 . 03845 ( d2h ) 0 . 905385 . at the same time , some other models can be got also , such as the seasonal dynamics model of biomass above ground and biomass under ground , the partitioning model of biomass above ground
7 )通过分析得出了芦苇地上生物量与株高和基径间的回归方程模型w一7 . 03845 ( dzh ) ” 05 ， 8 ，、芦苇地上和地下生物量的季节动态模型、地上生物量在营养器官和生殖器官间的分配模型。