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Measurement of above-ground plant biomass, forage availability and grazing impact by combining satellite image processing and field survey in a dry area of north-eastern Syria OAK
Hirata, Masahiro; Koga, N; Shinjo, H; Fujita, H; Gintzburger, G; Ishida, J; Miyazaki, A.
Field survey and satellite image processing methods were used to estimate the total available forage over an area of 95 034 ha in north-eastern Syria, and to assess grazing impact on the area. The above-ground plant biomass was measured by a quadrat method at three sites in each of eight vegetation classes. Available forage was measured by excluding woody parts of shrubs from the whole aerial plant parts. The total above-ground plant biomass and available forage were estimated by extrapolating the measured point data to the whole target area using classified vegetation data by satellite image processing. Grazing impact was assessed by calculating the differences between the total available forage at the end of growing season and the end of dry season. The...
Palavras-chave: Arid rangelands; Growing season; Plant cover; Shrubs.
Ano: 2005 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/709
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