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SCI论文目录 |
Effects of submerged macrophytes on kinetics of alkaline
phosphatase in Lake Donghu. I. Unfiltered water and sediments
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| 出 版 社： Water Research [Water Res.]. |
| 发表时间：2000 |
| 台 站：
东湖湖泊生态系统试验站
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| 作 者：Yiyong, Zhou; Jianqiu, Li; Yongqing, Fu |
| 点 击 率：2264 |
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| 关 键 字：null |
| 摘 要：null |
| 关 键 字(英文)：null |
摘 要(英文)：The impacts of submerged macrophytes on kinetics of alkaline
phosphatase were studied in two 680 m super(2) enclosures in a
shallow Chinese freshwater lake (Donghu Lake) from April to
October 1996, and two experimental pools (120 m super(2)) built
inland in 1998. The submerged macrophytes were Vallisneria sp,
Potamogeton crispus. In the presence of macrophytes, the
concentration of orthophosphate was significantly lower, coupled
with the decreasing function of organic P hydrolysis, in terms of
lower V sub(max) and higher K sub(m) values of alkaline
phosphatase in water, filtered and unfiltered (0.45 mu m); in the
interstitial water, the V sub(max) values of the enzyme in
sediments were significantly lower, exhibited by a spatial and
vertical profile. The results implied the key role of submerged
macrophytes was the retention of P nutrients.
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