本文選題：climatic　切入點：factors　出處：《Journal of Geographical Sciences》2016年04期 　論文類型：期刊論文

【摘要】：Wind erosion is a major contributor to land degradation and desertification. According to the Global Assessment of Human Induced Soil Degradation, the dryland territories of Mongolia are significantly affected by wind erosion. We used the wind erosion equation model in an Arc GIS environment to evaluate wind erosion across Mongolia. The individual factors of the wind erosion equation were parameterized using the following datasets:(a) monthly climatic data from 45 meteorological stations;(b) 16-day composites of MODIS Normalized Difference Vegetation Index data;(c) a SRTM DEM with a 90 m spatial resolution; and(d) the soil map of Mongolia. The results revealed the significant influence of aridity on wind erosion. The desert and semi-desert ecosystems were more vulnerable to wind erosion, hence more affected. The map of wind erosion revealed three major wind erosion regions where the maximum soil loss of 15 27 t/(hm~2·a) was observed. In general, the wind erosion potentials for the entire country of Mongolia are 15 27 t/(hm~2·a) in the deserts and semi-deserts, 10 15 t/(hm~2·a) in the dry steppes and 5 10 t/(hm~2·a) in the steppe regions.
[Abstract]:Wind erosion is a major contributor to land degradation and desertification. According to the Global Assessment of Human Induced Soil #engradation.#en14# dryland territories of Mongolia are significantly significantly affected by wind erosion.We used used wind erosion equation model in an Arc GIS model in an Arc GIS model in an Arc GIS environment to wind wind wind factors factors of the wind wind wind factors of the erosion equation were were equation. A SRTM DEM with a 90 m spatial resolution; The results revealed the significant influence of aridity on wind erosion.#en21# desert semi-desert ecosystems were were more vulnerable to wind erosion.#en32# The The revealed three major wind wind regions regions. In general, the wind erosion potentials for the entire country of Mongolia are 27 t/(hm~2 a) in the deserts and semi-deserts10 ~ 15 t/(hm~2 a) in the dry steppes and 5 / 10 t/(hm~2) in the steppe regions.
【作者單位】： Institute
【基金】：Swiss Agency for Development and Cooperation(SDC),No.81013651
【分類號】：S157.1

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