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Darama Yakup Selek Zeliha Selek Bulent Akgul Mehmet Ali Dagdeviren Murat 《Natural Hazards》2019,97(1):211-227
Natural Hazards - Hasanlar Dam and Hydroelectric Power Plant are located on Küçük Melen Creek in the Western Black Sea Basin of Turkey. The dam was constructed in 1974 to provide... 相似文献
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Conditional simulation of USLE/RUSLE soil erodibility factor by geostatistics in a Mediterranean Catchment,Turkey 总被引:4,自引:4,他引:0
Oguz Baskan Hicrettin Cebel Suat Akgul Gunay Erpul 《Environmental Earth Sciences》2010,60(6):1179-1187
Soil erosion is a major environmental problem that threatens the sustainability and productivity of agricultural areas. Assessment
and mapping of soil erosion are extremely important in the management and conservation of natural resources. The universal
soil loss equation (USLE/RUSLE) is an erosion model that predicts soil loss as a function of soil erodibility (K-factor), as well as topographic, rainfall, cover, and management factors. The traditional approach assumes that one soil
erodibility value represents the entire area of each soil series. Therefore, that approach does not account for spatial variability
of soil series. This study was carried out to evaluate the use of the sequential Gaussian simulation (SGS) for mapping soil
erodibility factor of the USLE/RUSLE methodology. Five hundred and forty-four surface soil samples (0–20 cm) were collected
from the study area to determine the soil erodibility. A simulation procedure was carried out on 300 realizations, and histogram
and semivariogram of the simulation were compared to the observed values. The results showed that the summary statistics,
histogram, and semivariogram of the simulation results were close to the observed values. In contrary to the traditional approach
and kriging, 95% confidence interval of the simulated realizations was formed in order to determine uncertainty standard deviation
map, and the uncertainty was explained numerically. The SGS produced a more reliable soil erodibility map and it can be more
successfully used for monitoring and improving effective strategies to prevent erosion hazards especially to improve site
specific management plans. 相似文献
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