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中文摘要：
三座串联水库，在 Wujiang 排水盆在时间的不同时期造了，在这研究被调查。样品在 20 点在表面并且也被拿， 40， 60，在在 4 月， 7 月， 2006 的 10 月和 2007 的 1 月的水坝前面的 80 m 深度。化学参数被计算并且溶解的无机的碳的集中[DIC ] 并且它的同位素的作文(σ 13 C DIC ) 被决定。在表面水里， σ 13 C DIC 价值在夏天和秋天高并且在冬季和春天低，当 DIC 集中在冬季和春天高在夏天和秋天并且相对是相对低的时。在水列，当时， DIC 集中增加 σ 13 C DIC 价值与水深度减少。在各种各样的水库的 DIC 在自然的河里在从那的同位素的作文是显著地不同的，但是在自然的湖接近那。另外在表面水里， σ 13 C 而营养水平趋于与增加水库的年龄变得更高， DIC 价值趋于变得更低。结论是在水坝堵住以后，变化发生在河水的水疗院化学性质，并且扣押的河向湖和沼泽地发展。另外，在 DIC 同位素的作文的区别可以习惯于某程度跟踪一座水库的进化过程。
英文摘要：
Three cascade reservoirs, built in different periods of time in the Wujiang drainage basin, were investigated in this study. Samples were taken at the surface and also at 20, 40, 60, 80 m depths in front of the dams in April, July, October of 2006 and January of 2007. Chemical parameters were calculated and the concentrations of dissolved inorganic carbon [DIC] and its isotopic composition （δ613CDIC） were determined. In surface waters, the δ613CDIC values are high in summer and autumn and low in winter and spring, while the DIC concentrations are relatively low in summer and autumn and relatively high in winter and spring. In the water column, the DIC concentrations increase while δ613CDIC values decrease with water depth. DIC in various reservoirs is significantly different in isotopic composition from that in natural rivers, but is close to that in natural lakes. In addition, in surface waters, the δ613CDIC values tend to become lower whereas the nutrition level tends to become higher with increasing age of the reservoirs. The conclusion is that after dam blocking, changes took place in the hydrochemical properties of river water, and the impounding rivers developed toward lakes and swamps. In addition, differentiation in DIC isotopic composition may be used to some extent to trace the evolution process of a reservoir.
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