沂蒙山区土壤侵蚀敏感性评价-水土保持通报.pdfVIP

27 3 Vol. 27, No. 3 2007 6 Bulletin of Soil and Water Conservation Jun. , 2007 2 3 孙秀美, 孙希华 , 冯军华 ( . , 255040; 2. , 2500 4; 3. , 25503 ) : , , GIS , , 5 , : ; ; : A : 000 288X( 2007) 03 0084 04 : S 57 Sensitivity Appraisal for Soil Erosion in the Yimeng Mountainous Area 2 3 SUN Xiumei , SU N Xihua , FENG Junhua ( . Zibo Environment Protection Agency, Zibo, Shandong 255040, China; 2. Dep artment of Geograp hy , Shandong Normal niversity, Ji nan, Shandong 2500 4, China; 3. Zibo No. 7 High School, Zibo, Shandong 25503 , China) Abstract: The Yimeng mountainous area is the most serious area suffering from soil and w ater loss in the Huaihe basin. The occurrence and development of soil and water loss for a long time have formed the special erosion envi ronment. T he application of computer and GIS has brought enormous efficiency in soil erosion investigation and evaluation. Referring to remote sensing images and investigated data of soil erosion, the thesis sets up a soil erosion sensitivity appraisal system based on the universal soil loss equation ( USLE) . The appraisal system includes rainfall erosion, terrain factor, soil erodibility and vegetation cover, and each of the factors that influence soil erosion sensi tivity is calculated using the GIS method. Then the thesis appraises the soil erosion sensitivity in the Yimeng mountainous area using the spatial method, and divides it into the extremely sensitive area, the highly sensitive area, the moderately sen