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Titlebook: Ecosystem Function & Human Activities; Reconciling Economic R. David Simpson (Fellow),Norman L. Christensen (D Book 1997 Springer Science+B

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41#
發(fā)表于 2025-3-28 15:58:10 | 只看該作者
42#
發(fā)表于 2025-3-28 19:08:23 | 只看該作者
Jerry P. Lewis,Ralph D. Reynoldsbeen made about the use, restoration, or conservation of natural resources. I then discuss the importance of separating ecological “functions” from societal “values” when applying the ecosystem concept.
43#
發(fā)表于 2025-3-29 01:44:24 | 只看該作者
Estuarine Ecosystem Issues on the Chesapeake Bay,additional 30 percent by 2010. Sediments, nutrients, and an array of toxic materials will probably find their way into these aquatic systems, leading to further declines in water quality, habitat conditions and living resources, especially if these areas do not have effective management programs (Cu
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發(fā)表于 2025-3-29 05:01:16 | 只看該作者
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發(fā)表于 2025-3-29 07:52:13 | 只看該作者
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發(fā)表于 2025-3-29 11:27:52 | 只看該作者
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發(fā)表于 2025-3-29 16:51:59 | 只看該作者
Ecosystem Function and Ecosystem Management,of conservation of mass and energy apply to the ecological systems we depend upon for natural resources and to the environmental conditions that shape the quality of our lives. Ecologists refer to the processes that shape and move matter and energy in ecosystems as “functions.” Thus, we may liken ec
48#
發(fā)表于 2025-3-29 23:18:40 | 只看該作者
49#
發(fā)表于 2025-3-30 01:57:09 | 只看該作者
Ecological Risk Assessment and Ecosystem Valuation, already be more than potential. For example, ecological risk assessments invariably provide information used in decision making, certainly in the environmental regulatory arena (e.g., RCRA/CERCLA, or Superfund). Decisions based in part on economic values assigned to ecological resources can determi
50#
發(fā)表于 2025-3-30 07:10:45 | 只看該作者
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