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博文

目前显示的是标签为“Running Waters”的博文

Seasonal and Spatial Distribution of N & P Substances in the Hula Valley (Israel) Subterranean

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50239#.VDM9IVfHRK0 Author(s)     M. Gophen , M. Meron , V. Orlov-Levin , Y. Tsipris Affiliation(s) Migal—The Upper Galilee Scientific Research Institute, Kiryat Shmona, Israel . ABSTRACT Until the late 1950s the Hula Valley, located between altitude of 170 masl in the northern part and 61 masl in the southern part, was covered by the old shallow Lake Hula (1.5 m mean depth; 1400 ha water surface); and 4500 ha of swamps partly or permanently were water covered. During 1950-1957 the old Lake Hula and the wetlands were drained and converted into agricultural usage. As a result of inappropriate agricultural management, a reclamation project (Hula Pro...