plaggen epipedon

用法例句

Effect on incrassation of mattic epipedon and pasture nutrient-moisture using by grazing in alpine Kobresia meadow;

放牧强度对嵩草草甸草毡表层及草地营养和水分利用的影响(简报)

Biogenic components in total 66 surface sediments,which were taken in the western Arctic Ocean during the First and Second Chinese National Arctic Expedition cruises,are analyzed for probing into the relationship between surface productivity and water masses in area studied.

通过对中国首次和第二次北极科学考察在北冰洋西部所采取的66个表层沉积物中生源组分的分析,探讨了该海区表层生产力变化与水团的相互关系。

Quantitative analytic results of biogenic components in core B2-9 from the northern Bering Sea slope indicate that coarse fraction and opal content, serving as proxies of surface productivity, have increased stepwise since the MIS 5.

3期以来表层生产力指标的粗组分和蛋白石含量呈阶梯状增加,反映表层生产力阶段式的增长。