生物丰度指数提高了10.43，说明南京市区生物丰富程度有很大改观；

Moreover, biological abundance index increases by 10.43, indicating that the biological diversity changes a lot positively during four years.

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根据烃源岩有机质丰度并结合地质分析方法，提出了油源丰度指数的概念并以此对塔里木盆地西南坳陷的烃源岩进行了评价。

The concept of oil source abundance index is presented by combining organic abundance of source rock with geological analysis, and applied in Southwest depression of Tarim basin.

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利用指数辐照理论的解析解研究了AGB星S过程元素的丰度分布规律。

Using the solution of S process chain with an exponential neutron irradiation the S process abundance distribution of AGB stars of different metallicities is investigated.

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