2BENNET E M, CARPENTER S R, CARACO N F. Human impact on erasable phosphorus and eu- trophication., a global perspective[J].BioScience, 2001, 51: 227-234.
3BERT B, ROBERT B. The major biogeochemical cycles and their interactions [-M~. New York: John Wiley, 1983.
4CARACO N F, COLE J J. Human impact on ni- trate export: An analysis using major world rivers [J]. AMBIO, 1999, 28.. 167-170.
5HUMBORG C, ITTEKKOT V, COCIASU A, et al. Effect of Danube river dam on Black Sea biogeo- chemistry and ecosystem structure [J]. Nature,1997, 386: 385-388.
6PAERL H W, BOYNTON W R, DENNIS R, et al. Atmospheric deposition of nitrogen in coastal waters., biogeochemical and ecological implications. In: Nitrogen Loading in Coastal Water Bodies.. An Atmospheric Perspective [M]. Washington.. D. C. , 2000:11-53.
7WOLLAST R. Interactions of carbon and nitrogen cycles in the coastal zone. Wollast R, Mackenzie F T, Chou L. Interactions of C, N, P and S Biogeo- chemical Cycles and Global Change, NATO ASI se- ries I :Global Environmental Change [M]. Berlin: Springer Verlag, 19 9 3 : 19 5 - 210.
8GRIMVALL A, STALNACKE R. Riverine inputs of nutrients to the Baltic Sea. In: A Systems Anan- lyse is of the Baltic Sea. In: Wulff, F. V, Rahm, L.A. and Larsson, P. (eds) ~ Ecological Studies Analysis and Synthesis[J].Springer, Berlin, 2001, 148:113-131.
9TREGUER P, NELSON D M, VAN BENNEKOM A J, et al. The silica balance in the world ocean: A reestimateEJ3. Science, 1995, 268: 375-379.
10GALLOWAY J N, COWLING E B. Nitrogen and the world [J]. AMBIO, 2002, 31.. 64-71.