龄级 meaning in English
age-class
Examples
- Trend of floral composition in different age - classes of undergrowth vegetations in cupressus funebris plantations in yichang suburb
宜昌市郊不同龄级柏木人工林下植物区系组成变化趋势 - The negative correlation of the dry matter production to the age class of rhizome indicates level of significance ( p < 0 . 05 , po . ol ) in leymus chinensis , calamagrostis epigeios and c . rigidula populations
羊草、牛鞭草和硬拂子茅种群根茎的干物质积累量与龄级间的负相关关系达到显著和极显著水平。 - The reproductive tiller is obviously higher than the vegetative , and there is little difference among all of age classes reproductive tiller at height and biomass , but the vegetative tiller is decreasing with the increasing age class
生殖蘖明显高于营养蘖，但各龄生殖蘖的高度和生产力差异不明显，营养蘖随着龄级的增加而明显下降。 - The bud bank is composed of 3 age classes bud on leymus chinensis , arundinella hirta and hordeum brevisubulatum populations , 2 age classes bud on hemarthria japonica , calamagrostis epigeios and c . rigidula populations . the age structure of bud is obviously an increasing model in all of 6 grass species
羊草、野古草和野大麦种群芽库由3个龄级组成，牛鞭草、拂子茅和硬拂子茅种群由2个龄级组成， 6种禾草芽库的年龄结构均为明显的增长型。 - Based on the observation data obtained from 69 sampling sites of different age class forests , and by using biomass expansion factor function , the regression equations of stand biomass and volume of the main forest forests in pearl river delta were built , and the regional forest biomass and its dynamics were estimated on the basis of forest inventory data
摘要利用生物量转换因子连续函数法，通过69组不同龄级的森林样地实测数据，拟合了珠江三角洲主要森林类型的生物量和蓄积量之间的回归方程，并结合3个时段森林清查资料，估算了区域森林生物量及其动态。