摘要:

While some of the world's most productive agriculture is on artificially drained soils, drainage is increasingly perceived as a major contributor to detrimental off‐site environmental impacts. However, the environmental impacts of artificial or improved agricultural drainage cannot be simply and clearly stated. The mechanisms governing the hydrology and loss of pollutants from artificially drained soils are complex and vary with conditions prior to drainage improvements and other factors: land use, management practices, soils, site conditions, and climate. The purpose of this paper is to present a review of research on the hydrologic and water quality effects of agricultural drainage and to discuss design and management strategies that reduce negative environmental impacts.

ISSN:1064-3389    

DOI:10.1080/10643389409388459

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

ISSN:1064-3389    

DOI:10.1080/10643389409388458

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

Following the end of World War H, the U.S. Government decided to commence nuclear weapons testing and consequently searched for a suitable test site. Bikini and Enewetak Atolls in the Marshall Islands were selected for various reasons discussed in this manuscript. Sixty‐six nuclear devices of various types were detonated from 1945 through mid‐1958 at these atolls. During this period and for an extended period thereafter, extensive endeavors to rehabilitate these atolls occurred. In addition to physical rehabilitation, scientists were involved in basic investigations on the cycling of radionuclides and the effects of ionizing radiation on the atoll environment. Further, a limited number of observations were made on the cultural impacts of removal and possible return of the Bikini and Enewetak Marshallese to their home atolls. The extensive but obscure literature as well as unfamiliarity by many people of the health aspects of ionizing radiation and fundamentals of radiation ecology encouraged the authors to prepare a manuscript that discloses the complex problems associated with returning the original inhabitants to Bikini and Enewetak Atolls. A primary goal was to make the reader aware of the available and extensive literature resulting from governmental investigations.

ISSN:1064-3389    

DOI:10.1080/10643389409388460

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

ISSN:1064-3389    

DOI:10.1080/10643389409388457

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor