专横
发表于 2025-4-1 04:01:06
Retention of nitrogen and phosphorus in a Danish lowland river system: implications for the export fr of two to three..Net retention of P in the river system during the summer of 1987 was equal to the summer export from the watershed. On an annual basis, retention in the summer constituted 20% of the P export. In contrast, retention in the summer of 1988 amounted to 60% of the total P export durin
cumulative
发表于 2025-4-1 09:10:00
The Vistula river and its riparian zonesng migrations of birds) and for recreation. A landscape park should be organized in the mist valuable middle course and upper part of low course of the Vistula. The river urgently needs measures to improve its purity: sewage purification plants, protective zones along most tributaries (such a zone a
Canvas
发表于 2025-4-1 13:57:07
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致命
发表于 2025-4-1 14:57:38
h an understanding isimportant for the rational protection, management and restoration ofecotones connected with lakes and rivers. The importance of nutrientcycling and retention is discussed from the point of view of ecotonefunction, management and reconstruction in order to sustain itsprotective role for wa978-94-010-4698-5978-94-011-1602-2
阻挠
发表于 2025-4-1 19:33:27
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Silent-Ischemia
发表于 2025-4-2 02:30:41
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胰脏
发表于 2025-4-2 02:57:09
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