Soil Degradation Due to Vicinal Intensive Hog Farming Operation Located in East Mediterranean

摘要

One of the main environmental impacts of concentrated animal feeding operations is the soil degradation in vicinity with the livestock breeding facilities due to substances such as ammonia emitted from the various stages of the process. Owing to the high temperatures of the Mediterranean ecosystems, the evolution of gasses is more extensive and the soil degradation is consequently more severe than those obtained in northern Europe. In this research, the soil degradation effects of a large meat-producing, processing, and packaging unit have been investigated. The investigated intensive hog farming operation (IHFO) is located at a limestone soil coastal area with sea to the north and hills to the south. Soil samples of the upper mineral soil were taken in various distances and directions from the IHFO boundaries. Thirteen experimental cycles were carried out in the duration of 1.5 years starting in March 2009 until October 2010. The soil samples were analyzed on pH and electrical conductivity (EC) values as well as NH_4~+ and NO_3~- concentrations. Significantly higher concentrations of the two nitrogen forms were observed on samples at increasing proximity down- wind from the farm (south). Southern soil average NH_4~+ and NO_3~- concentrations ranged between 0.4-118μg NH_4~+-N g~(-1) soil and 6.1-88.4 μg NO_3~-N g~(-1) soil, respectively. The variation of emitted gasses depositions was clearly reflected in the average pH and EC values. Average pH and EC values downwind from IHFO boundaries varied between 7.1-8.2 and 140-268 μS/cm, respectively.