Yangzte is the longest river in China, it empties to East Ocean.

长江是中国最长的河流，流入东海。

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So study on the CO2 flux at the estuary of Yangzte and Huanghe is of great importance for the discussion of global carbon cycle and for the consummation of the global carbon database.

研究长江口和黄河口邻近海域的碳化学体系，对于更完整、准确地探讨边缘海区对全球碳循环的贡献、以及完善全球碳系统参数数据库无疑是极为必要的。

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