英汉例句

• the results indicate that:1)the richness and species diversity indices were declined, and evenness index increased with the increase of elevation;

  结果表明：1）随海拔升高物种丰富度和多样性下降，而均匀度上升。

• growth indices of artificial cultivated hedysarummaxim. are studied by line transect methods, species diversity indices are calculated to study the sand-fixing effects of hedysarummaxim.

  采用样线法对人工种植羊柴进行研究，调查其生长状况，并通过研究其物种多样性来分析羊柴对流沙的固定效果。

• for all dune types the species diversity indices of perennial plants were the highest, those of annual plants were at the second, they increased from shifting sand dune stage to fixed stage.

  植物生活型上各沙丘类型上的物种多样性指数均以多年生草本为最高，其次为一年生草本，而且从流动沙丘至固定沙丘阶段呈递增变化。

• the combination of species abundance and species diversity indices is more meaningful than treat them separately in community studies.

  多度格局与物种多样性指数结合，对群落结构研究更具意义；

• after this, the compositions of families changed a lot, the family numbers and family species diversity indices significantly increased.

  此后，科的组成变化明显，科数和科-种多样性指数显着增加。

• the species diversity indices of the arbor layers are most cor-relative to those of the shrub layers.

  乔木层同灌木层间的物种多样性指数具最大的相关注。

• the species diversity indices of the scrubs did not decreased from initial stage to middle stage and to climax stage of succession.

  灌丛群落的物种多样性指数值随着演替的进行，没有表现出降低的趋势。

• although the standing stocks are in a very low level , the species diversity indices show increase in 1998, indicating a decrease of species dominance.

  虽然现存生物量处于非常低的水平，但生物多样性1998年有所增加，表明了资源优势种不明显、优势度下降。