濕地生態(tài)修復(fù)手冊(cè)
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資料類別
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化工建筑畢業(yè)論文(設(shè)計(jì)) |
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課程(專業(yè))
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濕地生態(tài)修復(fù)手冊(cè) |
關(guān)鍵詞
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濕地生態(tài)|修復(fù)手冊(cè) |
適用年級(jí)
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大學(xué) |
身份要求
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游客 |
金 幣
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0 。金幣如何獲得?) |
文件格式
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pdf |
文件大小
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314K |
發(fā)布時(shí)間
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2009-07-25 19:09:00 |
預(yù)覽文件
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無(wú) |
下載次數(shù)
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21 |
發(fā)布人 |
lj |
內(nèi)容簡(jiǎn)介:
濕地生態(tài)修復(fù)手冊(cè)
ABSTRACT
This document presents approaches and methods for identifying and delineating wetlands for
purposes of Section 404 of the Clean Water Act. It is designed to assist users in making
wetland determinations using a multiparameter approach. Except where noted in the manual,
this approach requires positive evidence of hydrophytic vegetation, hydric soils, and wetland
hydrology for a determination that an area is a wetland. The multiparameter approach provides
a logical, easily defensible, and technical basis for wetland determinations. Technical
guidelines are presented for wetlands, deepwater aquatic habitats, and nonwetlands (uplands).
Hydrophytic vegetation, hydric soils, and wetland hydrology are also characterized, and
wetland indicators of each parameter are listed.
......
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