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1 U.S. Department of Energy -- Biomass Program 开放资源 专家推荐
  Biomass is a clean, renewable energy source that can help to significantly diversify transportation fuels in the United States. The Biomass Program is helping transform the nation'...
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2 U.S. Environmental Protection Agency: Indoor Air Quality 开放资源 机器抓取
  网站提供了有关室内空气质量的信息资料,包括室内空气质量介绍(如污染源、污染物)、建筑内空气质量、室内空气污染和青年人健康、有关室内空气研究和技术信息、相关出版物等。;The US EPA Indoor Air Quality (IAQ) home page provides basic information on IAQ and a glossary of...
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3 U.S. Environmental Protection Agency: Laws and Regulations 开放资源 机器抓取
  This web site provides US environmental laws and regulations, which are a major tool in protecting the environment. Congress passes laws that govern the United States. To put those...
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4 U.S. Environmental Protection Agency: Online Library System 开放资源 机器抓取
  “联机图书馆系统”(OLS)提供由美国环境保护总署(USEPA)图书馆网络的联机图书馆系统,是由几个相关的数据库组成的,可以查找图书、报告和视听材料。该系统每两周更新一次资源。可以用多种方法来检索,如可以通过主题词、作者和关键词等。此外,通过OLS还可以查询其它一些专门馆藏。;OLS is the Online Library System for the ...
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5 U.S. Environmental Protection Agency: Watershed Information Network 开放资源 机器抓取
  This site is a part of Watershed Information Network of Environmental Protection Agency.It is something about Watershed Atlas which is a catalog of geo-spatial displays and analyse...
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6 U.S. Environmental Protection Agency: Wetlands 开放资源 机器抓取
  The EPA Wetlands web site offers the text of laws, regulations, and court decisions that govern wetland protection, as well as provides online access to permitting processes. Scien...
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7 U.S. Fish and Wildlife Service (USFWS) 开放资源 机器抓取
  The U.S. Fish and Wildlife Service (Service) is the principal Federal agency that provides information to the public on the extent and status of the Nation's wetlands. The agency h...
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8 U.S. Geological Survey -- National Geospatial Program Standards and Specifications 开放资源 机器抓取
  This site provides descriptions of the standards used by the USGS National Mapping Program to produce and maintain geospatial data products that are accurate and consistent in styl...
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9 U.S. Geological Survey : Mine Drainage Activities 开放资源 机器抓取
  This web site brings together much research being done by the USGS on mine drainage problems. It includes a listing of current USGS mine drainage projects by state, a directory of ...
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10 U.S. Geological Survey--Natural Hazards 开放资源 机器抓取
  In the United States each year, natural hazards cause hundreds of deaths and cost tens of billions of dollars in disaster aid, disruption of commerce, and destruction of homes and ...
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