This book presents study findings involving the Changjiang River estuary and Jiaozhou Bay, China, etc. It takes a large catchment as a combined ecosystem to study nutrients biogeochemistry and environmental aspects of the Changjiang River. Some of the findings have sparked new research directions, including systematic studies of nutrients in the Changjiang River; sources and control mechanisms of nitrogen and phosphorus in the Changjiang River and its estuary; removal and transport of nutrients in the turbidity maximum zone and upwelling area of the Changjiang estuary; long-term changes in nutrients and ecological responses in the Changjiang River estuary and Jiaozhou Bay; and a study on nutrient structure and nutrient composition of phytoplankton, which are topics at the forefront ofinternational marine

The studies address different fields, such as biogeochemistry, marine chemistry, ecology, environmental science, oceanography and biology.

Zhiliang Shen, a expert of marine chemistry and Marine Ecology Environment in China, is a research professor and Ph. D. supervisor of Institute of Oceanology, Chinese Academy of Sciences. Before 2007, He was a responsible researcher of Marine biogeochemistry in Institute of Oceanology, Chinese Academy of Sciences, and lad a team and hosted or participated in more than 30 national, Chinese Academy of Sciences, provincial, ministerial and municipal research projects, including the national key projects of the sixth and seventh five-year programs and National Natural Science Foundation of China, and published about 100 peer-reviewed journal articles and 11 books and atlases. The representative articles in recent years include " Shen Zhiliang et al., 2017, Chemical composition and biomass of Coscinodiscusasteromphalus in Jiaozhou Bay, China. Environ Monit Assess, 189: 94. "Shen Zhiliang et al., 2012, An estimation on budget and control of phosphorusin the Changjiang River catchment. Environ Monit Assess, 184, 6491-6505", "Shen Zhiliang, 2012, A new method for the estimation of fine-sediment resuspension ratios in estuaries--taking the turbidity maximum zone of the Changjiang (Yangtze) estuary as an example. Chin J OceanolLimnol, 30(5), 791-795", "Shen Zhiliang et al., 2009, Nutrients in the Changjiang River. Environ. Monit.Assess., 153 (1), 27-44", "Shen Zhiliang et al., 2008, Transfer and transport of phosphorus and silica in the turbidity maximum zone of the Changjiang estuary. Estuar Coast Shelf Sci, 78 (3), 481-492", etc., and the representative books is "Yu Zhiming and Shen Zhiliang et al., 2011, Eutrophication in the Changjiang River Estuary and Adjacent Waters, Beijing: Science press" (in Chinese).